Repository: google/ko
Pull request #79 (2019-09-10 20:26:38)

Add build.Limiter
You can limit the number of concurrent builds with -j (a la make).

The default value for this is GOMAXPROCS, which seems reasonable.

cc @JungukCho


Patch:
diff --git a/pkg/build/limit.go b/pkg/build/limit.go
new file mode 100644
index 00000000..9af09da6
--- /dev/null
+++ b/pkg/build/limit.go
@@ -0,0 +1,55 @@
+// Copyright 2019 Google LLC All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package build
+
+import (
+	"context"
+
+	v1 "github.com/google/go-containerregistry/pkg/v1"
+	"golang.org/x/sync/semaphore"
+)
+
+// Limiter composes with another Interface to limit the number of concurrent builds.
+type Limiter struct {
+	Builder   Interface
+	semaphore *semaphore.Weighted
+}
+
+// Limiter implements Interface
+var _ Interface = (*Recorder)(nil)
+
+// IsSupportedReference implements Interface
+func (l *Limiter) IsSupportedReference(ip string) bool {
+	return l.Builder.IsSupportedReference(ip)
+}
+
+// Build implements Interface
+func (l *Limiter) Build(ip string) (v1.Image, error) {
+	// TODO(jonjohnsonjr): Build should take a context.Context.
+	if err := l.semaphore.Acquire(context.TODO(), 1); err != nil {
+		return nil, err
+	}
+	defer l.semaphore.Release(1)
+
+	return l.Builder.Build(ip)
+}
+
+// NewLimiter returns a new builder that only allows n concurrent builds of b.
+func NewLimiter(b Interface, n int) *Limiter {
+	return &Limiter{
+		Builder:   b,
+		semaphore: semaphore.NewWeighted(int64(n)),
+	}
+}
diff --git a/pkg/commands/apply.go b/pkg/commands/apply.go
index a03c65fe..318964fd 100644
--- a/pkg/commands/apply.go
+++ b/pkg/commands/apply.go
@@ -32,9 +32,9 @@ func addApply(topLevel *cobra.Command) {
 	no := &options.NameOptions{}
 	fo := &options.FilenameOptions{}
 	ta := &options.TagsOptions{}
-	do := &options.DebugOptions{}
 	so := &options.SelectorOptions{}
 	sto := &options.StrictOptions{}
+	bo := &options.BuildOptions{}
 	apply := &cobra.Command{
 		Use:   "apply -f FILENAME",
 		Short: "Apply the input files with image references resolved to built/pushed image digests.",
@@ -64,7 +64,7 @@ func addApply(topLevel *cobra.Command) {
   cat config.yaml | ko apply -f -`,
 		Args: cobra.NoArgs,
 		Run: func(cmd *cobra.Command, args []string) {
-			builder, err := makeBuilder(do)
+			builder, err := makeBuilder(bo)
 			if err != nil {
 				log.Fatalf("error creating builder: %v", err)
 			}
@@ -130,9 +130,9 @@ func addApply(topLevel *cobra.Command) {
 	options.AddNamingArgs(apply, no)
 	options.AddFileArg(apply, fo)
 	options.AddTagsArg(apply, ta)
-	options.AddDebugArg(apply, do)
 	options.AddSelectorArg(apply, so)
 	options.AddStrictArg(apply, sto)
+	options.AddBuildOptions(apply, bo)
 
 	// Collect the ko-specific apply flags before registering the kubectl global
 	// flags so that we can ignore them when passing kubectl global flags through
diff --git a/pkg/commands/create.go b/pkg/commands/create.go
index 56bb0c89..6337314a 100644
--- a/pkg/commands/create.go
+++ b/pkg/commands/create.go
@@ -32,9 +32,9 @@ func addCreate(topLevel *cobra.Command) {
 	no := &options.NameOptions{}
 	fo := &options.FilenameOptions{}
 	ta := &options.TagsOptions{}
-	do := &options.DebugOptions{}
 	so := &options.SelectorOptions{}
 	sto := &options.StrictOptions{}
+	bo := &options.BuildOptions{}
 	create := &cobra.Command{
 		Use:   "create -f FILENAME",
 		Short: "Create the input files with image references resolved to built/pushed image digests.",
@@ -64,7 +64,7 @@ func addCreate(topLevel *cobra.Command) {
   cat config.yaml | ko create -f -`,
 		Args: cobra.NoArgs,
 		Run: func(cmd *cobra.Command, args []string) {
-			builder, err := makeBuilder(do)
+			builder, err := makeBuilder(bo)
 			if err != nil {
 				log.Fatalf("error creating builder: %v", err)
 			}
@@ -130,9 +130,9 @@ func addCreate(topLevel *cobra.Command) {
 	options.AddNamingArgs(create, no)
 	options.AddFileArg(create, fo)
 	options.AddTagsArg(create, ta)
-	options.AddDebugArg(create, do)
 	options.AddSelectorArg(create, so)
 	options.AddStrictArg(create, sto)
+	options.AddBuildOptions(create, bo)
 
 	// Collect the ko-specific apply flags before registering the kubectl global
 	// flags so that we can ignore them when passing kubectl global flags through
diff --git a/pkg/commands/options/binary.go b/pkg/commands/options/binary.go
index efe16447..c44a32fa 100644
--- a/pkg/commands/options/binary.go
+++ b/pkg/commands/options/binary.go
@@ -18,13 +18,13 @@ import (
 	"github.com/spf13/cobra"
 )
 
-// BinaryOptions represents options for the ko binary.
-type BinaryOptions struct {
+// PublishOptions represents options for the ko binary.
+type PublishOptions struct {
 	// Path is the import path of the binary to publish.
 	Path string
 }
 
-func AddImageArg(cmd *cobra.Command, lo *BinaryOptions) {
+func AddImageArg(cmd *cobra.Command, lo *PublishOptions) {
 	cmd.Flags().StringVarP(&lo.Path, "image", "i", lo.Path,
 		"The import path of the binary to publish.")
 }
diff --git a/pkg/commands/options/debug.go b/pkg/commands/options/build.go
similarity index 66%
rename from pkg/commands/options/debug.go
rename to pkg/commands/options/build.go
index 878254f9..10a58457 100644
--- a/pkg/commands/options/debug.go
+++ b/pkg/commands/options/build.go
@@ -15,15 +15,20 @@
 package options
 
 import (
+	"runtime"
+
 	"github.com/spf13/cobra"
 )
 
-// DebugOptions holds options to improve debugging containers.
-type DebugOptions struct {
+// BuildOptions represents options for the ko builder.
+type BuildOptions struct {
+	ConcurrentBuilds     int
 	DisableOptimizations bool
 }
 
-func AddDebugArg(cmd *cobra.Command, do *DebugOptions) {
-	cmd.Flags().BoolVar(&do.DisableOptimizations, "disable-optimizations", do.DisableOptimizations,
+func AddBuildOptions(cmd *cobra.Command, bo *BuildOptions) {
+	cmd.Flags().IntVarP(&bo.ConcurrentBuilds, "--jobs", "j", runtime.GOMAXPROCS(0),
+		"The maximum number of concurrent builds")
+	cmd.Flags().BoolVar(&bo.DisableOptimizations, "disable-optimizations", bo.DisableOptimizations,
 		"Disable optimizations when building Go code. Useful when you want to interactively debug the created container.")
 }
diff --git a/pkg/commands/publish.go b/pkg/commands/publish.go
index 5e32a23d..58c3bb97 100644
--- a/pkg/commands/publish.go
+++ b/pkg/commands/publish.go
@@ -27,7 +27,7 @@ func addPublish(topLevel *cobra.Command) {
 	lo := &options.LocalOptions{}
 	no := &options.NameOptions{}
 	ta := &options.TagsOptions{}
-	do := &options.DebugOptions{}
+	bo := &options.BuildOptions{}
 
 	publish := &cobra.Command{
 		Use:   "publish IMPORTPATH...",
@@ -60,7 +60,7 @@ func addPublish(topLevel *cobra.Command) {
   ko publish --local github.com/foo/bar/cmd/baz github.com/foo/bar/cmd/blah`,
 		Args: cobra.MinimumNArgs(1),
 		Run: func(_ *cobra.Command, args []string) {
-			builder, err := makeBuilder(do)
+			builder, err := makeBuilder(bo)
 			if err != nil {
 				log.Fatalf("error creating builder: %v", err)
 			}
@@ -80,6 +80,6 @@ func addPublish(topLevel *cobra.Command) {
 	options.AddLocalArg(publish, lo)
 	options.AddNamingArgs(publish, no)
 	options.AddTagsArg(publish, ta)
-	options.AddDebugArg(publish, do)
+	options.AddBuildOptions(publish, bo)
 	topLevel.AddCommand(publish)
 }
diff --git a/pkg/commands/resolve.go b/pkg/commands/resolve.go
index 82cd92c7..d47da193 100644
--- a/pkg/commands/resolve.go
+++ b/pkg/commands/resolve.go
@@ -28,9 +28,9 @@ func addResolve(topLevel *cobra.Command) {
 	no := &options.NameOptions{}
 	fo := &options.FilenameOptions{}
 	ta := &options.TagsOptions{}
-	do := &options.DebugOptions{}
 	so := &options.SelectorOptions{}
 	sto := &options.StrictOptions{}
+	bo := &options.BuildOptions{}
 
 	resolve := &cobra.Command{
 		Use:   "resolve -f FILENAME",
@@ -58,7 +58,7 @@ func addResolve(topLevel *cobra.Command) {
   ko resolve --local -f config/`,
 		Args: cobra.NoArgs,
 		Run: func(cmd *cobra.Command, args []string) {
-			builder, err := makeBuilder(do)
+			builder, err := makeBuilder(bo)
 			if err != nil {
 				log.Fatalf("error creating builder: %v", err)
 			}
@@ -73,8 +73,8 @@ func addResolve(topLevel *cobra.Command) {
 	options.AddNamingArgs(resolve, no)
 	options.AddFileArg(resolve, fo)
 	options.AddTagsArg(resolve, ta)
-	options.AddDebugArg(resolve, do)
 	options.AddSelectorArg(resolve, so)
 	options.AddStrictArg(resolve, sto)
+	options.AddBuildOptions(resolve, bo)
 	topLevel.AddCommand(resolve)
 }
diff --git a/pkg/commands/resolver.go b/pkg/commands/resolver.go
index f54d616c..a7654f62 100644
--- a/pkg/commands/resolver.go
+++ b/pkg/commands/resolver.go
@@ -32,7 +32,7 @@ import (
 	"github.com/mattmoor/dep-notify/pkg/graph"
 )
 
-func gobuildOptions(do *options.DebugOptions) ([]build.Option, error) {
+func gobuildOptions(bo *options.BuildOptions) ([]build.Option, error) {
 	creationTime, err := getCreationTime()
 	if err != nil {
 		return nil, err
@@ -43,14 +43,14 @@ func gobuildOptions(do *options.DebugOptions) ([]build.Option, error) {
 	if creationTime != nil {
 		opts = append(opts, build.WithCreationTime(*creationTime))
 	}
-	if do.DisableOptimizations {
+	if bo.DisableOptimizations {
 		opts = append(opts, build.WithDisabledOptimizations())
 	}
 	return opts, nil
 }
 
-func makeBuilder(do *options.DebugOptions) (*build.Caching, error) {
-	opt, err := gobuildOptions(do)
+func makeBuilder(bo *options.BuildOptions) (*build.Caching, error) {
+	opt, err := gobuildOptions(bo)
 	if err != nil {
 		log.Fatalf("error setting up builder options: %v", err)
 	}
@@ -59,6 +59,8 @@ func makeBuilder(do *options.DebugOptions) (*build.Caching, error) {
 		return nil, err
 	}
 
+	innerBuilder = build.NewLimiter(innerBuilder, bo.ConcurrentBuilds)
+
 	// tl;dr Wrap builder in a caching builder.
 	//
 	// The caching builder should on Build calls:
diff --git a/pkg/commands/run.go b/pkg/commands/run.go
index 64d6564f..05cf2a02 100644
--- a/pkg/commands/run.go
+++ b/pkg/commands/run.go
@@ -26,10 +26,10 @@ import (
 // addRun augments our CLI surface with run.
 func addRun(topLevel *cobra.Command) {
 	lo := &options.LocalOptions{}
-	bo := &options.BinaryOptions{}
+	po := &options.PublishOptions{}
 	no := &options.NameOptions{}
 	ta := &options.TagsOptions{}
-	do := &options.DebugOptions{}
+	bo := &options.BuildOptions{}
 
 	run := &cobra.Command{
 		Use:   "run NAME --image=IMPORTPATH",
@@ -45,7 +45,7 @@ func addRun(topLevel *cobra.Command) {
   # This supports relative import paths as well.
   ko run foo --image=./cmd/baz`,
 		Run: func(cmd *cobra.Command, args []string) {
-			builder, err := makeBuilder(do)
+			builder, err := makeBuilder(bo)
 			if err != nil {
 				log.Fatalf("error creating builder: %v", err)
 			}
@@ -53,7 +53,7 @@ func addRun(topLevel *cobra.Command) {
 			if err != nil {
 				log.Fatalf("error creating publisher: %v", err)
 			}
-			imgs, err := publishImages([]string{bo.Path}, publisher, builder)
+			imgs, err := publishImages([]string{po.Path}, publisher, builder)
 			if err != nil {
 				log.Fatalf("failed to publish images: %v", err)
 			}
@@ -88,9 +88,9 @@ func addRun(topLevel *cobra.Command) {
 	}
 	options.AddLocalArg(run, lo)
 	options.AddNamingArgs(run, no)
-	options.AddImageArg(run, bo)
+	options.AddImageArg(run, po)
 	options.AddTagsArg(run, ta)
-	options.AddDebugArg(run, do)
+	options.AddBuildOptions(run, bo)
 
 	topLevel.AddCommand(run)
 }
diff --git a/vendor/github.com/google/btree/btree_mem.go b/vendor/github.com/google/btree/btree_mem.go
deleted file mode 100644
index cb95b7fa..00000000
--- a/vendor/github.com/google/btree/btree_mem.go
+++ /dev/null
@@ -1,76 +0,0 @@
-// Copyright 2014 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// +build ignore
-
-// This binary compares memory usage between btree and gollrb.
-package main
-
-import (
-	"flag"
-	"fmt"
-	"math/rand"
-	"runtime"
-	"time"
-
-	"github.com/google/btree"
-	"github.com/petar/GoLLRB/llrb"
-)
-
-var (
-	size   = flag.Int("size", 1000000, "size of the tree to build")
-	degree = flag.Int("degree", 8, "degree of btree")
-	gollrb = flag.Bool("llrb", false, "use llrb instead of btree")
-)
-
-func main() {
-	flag.Parse()
-	vals := rand.Perm(*size)
-	var t, v interface{}
-	v = vals
-	var stats runtime.MemStats
-	for i := 0; i < 10; i++ {
-		runtime.GC()
-	}
-	fmt.Println("-------- BEFORE ----------")
-	runtime.ReadMemStats(&stats)
-	fmt.Printf("%+v\n", stats)
-	start := time.Now()
-	if *gollrb {
-		tr := llrb.New()
-		for _, v := range vals {
-			tr.ReplaceOrInsert(llrb.Int(v))
-		}
-		t = tr // keep it around
-	} else {
-		tr := btree.New(*degree)
-		for _, v := range vals {
-			tr.ReplaceOrInsert(btree.Int(v))
-		}
-		t = tr // keep it around
-	}
-	fmt.Printf("%v inserts in %v\n", *size, time.Since(start))
-	fmt.Println("-------- AFTER ----------")
-	runtime.ReadMemStats(&stats)
-	fmt.Printf("%+v\n", stats)
-	for i := 0; i < 10; i++ {
-		runtime.GC()
-	}
-	fmt.Println("-------- AFTER GC ----------")
-	runtime.ReadMemStats(&stats)
-	fmt.Printf("%+v\n", stats)
-	if t == v {
-		fmt.Println("to make sure vals and tree aren't GC'd")
-	}
-}
diff --git a/vendor/golang.org/x/sync/semaphore/semaphore.go b/vendor/golang.org/x/sync/semaphore/semaphore.go
new file mode 100644
index 00000000..7f096fef
--- /dev/null
+++ b/vendor/golang.org/x/sync/semaphore/semaphore.go
@@ -0,0 +1,127 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package semaphore provides a weighted semaphore implementation.
+package semaphore // import "golang.org/x/sync/semaphore"
+
+import (
+	"container/list"
+	"context"
+	"sync"
+)
+
+type waiter struct {
+	n     int64
+	ready chan<- struct{} // Closed when semaphore acquired.
+}
+
+// NewWeighted creates a new weighted semaphore with the given
+// maximum combined weight for concurrent access.
+func NewWeighted(n int64) *Weighted {
+	w := &Weighted{size: n}
+	return w
+}
+
+// Weighted provides a way to bound concurrent access to a resource.
+// The callers can request access with a given weight.
+type Weighted struct {
+	size    int64
+	cur     int64
+	mu      sync.Mutex
+	waiters list.List
+}
+
+// Acquire acquires the semaphore with a weight of n, blocking until resources
+// are available or ctx is done. On success, returns nil. On failure, returns
+// ctx.Err() and leaves the semaphore unchanged.
+//
+// If ctx is already done, Acquire may still succeed without blocking.
+func (s *Weighted) Acquire(ctx context.Context, n int64) error {
+	s.mu.Lock()
+	if s.size-s.cur >= n && s.waiters.Len() == 0 {
+		s.cur += n
+		s.mu.Unlock()
+		return nil
+	}
+
+	if n > s.size {
+		// Don't make other Acquire calls block on one that's doomed to fail.
+		s.mu.Unlock()
+		<-ctx.Done()
+		return ctx.Err()
+	}
+
+	ready := make(chan struct{})
+	w := waiter{n: n, ready: ready}
+	elem := s.waiters.PushBack(w)
+	s.mu.Unlock()
+
+	select {
+	case <-ctx.Done():
+		err := ctx.Err()
+		s.mu.Lock()
+		select {
+		case <-ready:
+			// Acquired the semaphore after we were canceled.  Rather than trying to
+			// fix up the queue, just pretend we didn't notice the cancelation.
+			err = nil
+		default:
+			s.waiters.Remove(elem)
+		}
+		s.mu.Unlock()
+		return err
+
+	case <-ready:
+		return nil
+	}
+}
+
+// TryAcquire acquires the semaphore with a weight of n without blocking.
+// On success, returns true. On failure, returns false and leaves the semaphore unchanged.
+func (s *Weighted) TryAcquire(n int64) bool {
+	s.mu.Lock()
+	success := s.size-s.cur >= n && s.waiters.Len() == 0
+	if success {
+		s.cur += n
+	}
+	s.mu.Unlock()
+	return success
+}
+
+// Release releases the semaphore with a weight of n.
+func (s *Weighted) Release(n int64) {
+	s.mu.Lock()
+	s.cur -= n
+	if s.cur < 0 {
+		s.mu.Unlock()
+		panic("semaphore: released more than held")
+	}
+	for {
+		next := s.waiters.Front()
+		if next == nil {
+			break // No more waiters blocked.
+		}
+
+		w := next.Value.(waiter)
+		if s.size-s.cur < w.n {
+			// Not enough tokens for the next waiter.  We could keep going (to try to
+			// find a waiter with a smaller request), but under load that could cause
+			// starvation for large requests; instead, we leave all remaining waiters
+			// blocked.
+			//
+			// Consider a semaphore used as a read-write lock, with N tokens, N
+			// readers, and one writer.  Each reader can Acquire(1) to obtain a read
+			// lock.  The writer can Acquire(N) to obtain a write lock, excluding all
+			// of the readers.  If we allow the readers to jump ahead in the queue,
+			// the writer will starve — there is always one token available for every
+			// reader.
+			break
+		}
+
+		s.cur += w.n
+		s.waiters.Remove(next)
+		close(w.ready)
+	}
+	s.mu.Unlock()
+}
diff --git a/vendor/golang.org/x/sys/unix/mkasm_darwin.go b/vendor/golang.org/x/sys/unix/mkasm_darwin.go
deleted file mode 100644
index 4548b993..00000000
--- a/vendor/golang.org/x/sys/unix/mkasm_darwin.go
+++ /dev/null
@@ -1,61 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// mkasm_darwin.go generates assembly trampolines to call libSystem routines from Go.
-//This program must be run after mksyscall.go.
-package main
-
-import (
-	"bytes"
-	"fmt"
-	"io/ioutil"
-	"log"
-	"os"
-	"strings"
-)
-
-func main() {
-	in1, err := ioutil.ReadFile("syscall_darwin.go")
-	if err != nil {
-		log.Fatalf("can't open syscall_darwin.go: %s", err)
-	}
-	arch := os.Args[1]
-	in2, err := ioutil.ReadFile(fmt.Sprintf("syscall_darwin_%s.go", arch))
-	if err != nil {
-		log.Fatalf("can't open syscall_darwin_%s.go: %s", arch, err)
-	}
-	in3, err := ioutil.ReadFile(fmt.Sprintf("zsyscall_darwin_%s.go", arch))
-	if err != nil {
-		log.Fatalf("can't open zsyscall_darwin_%s.go: %s", arch, err)
-	}
-	in := string(in1) + string(in2) + string(in3)
-
-	trampolines := map[string]bool{}
-
-	var out bytes.Buffer
-
-	fmt.Fprintf(&out, "// go run mkasm_darwin.go %s\n", strings.Join(os.Args[1:], " "))
-	fmt.Fprintf(&out, "// Code generated by the command above; DO NOT EDIT.\n")
-	fmt.Fprintf(&out, "\n")
-	fmt.Fprintf(&out, "// +build go1.12\n")
-	fmt.Fprintf(&out, "\n")
-	fmt.Fprintf(&out, "#include \"textflag.h\"\n")
-	for _, line := range strings.Split(in, "\n") {
-		if !strings.HasPrefix(line, "func ") || !strings.HasSuffix(line, "_trampoline()") {
-			continue
-		}
-		fn := line[5 : len(line)-13]
-		if !trampolines[fn] {
-			trampolines[fn] = true
-			fmt.Fprintf(&out, "TEXT ·%s_trampoline(SB),NOSPLIT,$0-0\n", fn)
-			fmt.Fprintf(&out, "\tJMP\t%s(SB)\n", fn)
-		}
-	}
-	err = ioutil.WriteFile(fmt.Sprintf("zsyscall_darwin_%s.s", arch), out.Bytes(), 0644)
-	if err != nil {
-		log.Fatalf("can't write zsyscall_darwin_%s.s: %s", arch, err)
-	}
-}
diff --git a/vendor/golang.org/x/sys/unix/mkpost.go b/vendor/golang.org/x/sys/unix/mkpost.go
deleted file mode 100644
index 9feddd00..00000000
--- a/vendor/golang.org/x/sys/unix/mkpost.go
+++ /dev/null
@@ -1,106 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// mkpost processes the output of cgo -godefs to
-// modify the generated types. It is used to clean up
-// the sys API in an architecture specific manner.
-//
-// mkpost is run after cgo -godefs; see README.md.
-package main
-
-import (
-	"bytes"
-	"fmt"
-	"go/format"
-	"io/ioutil"
-	"log"
-	"os"
-	"regexp"
-)
-
-func main() {
-	// Get the OS and architecture (using GOARCH_TARGET if it exists)
-	goos := os.Getenv("GOOS")
-	goarch := os.Getenv("GOARCH_TARGET")
-	if goarch == "" {
-		goarch = os.Getenv("GOARCH")
-	}
-	// Check that we are using the Docker-based build system if we should be.
-	if goos == "linux" {
-		if os.Getenv("GOLANG_SYS_BUILD") != "docker" {
-			os.Stderr.WriteString("In the Docker-based build system, mkpost should not be called directly.\n")
-			os.Stderr.WriteString("See README.md\n")
-			os.Exit(1)
-		}
-	}
-
-	b, err := ioutil.ReadAll(os.Stdin)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	// Intentionally export __val fields in Fsid and Sigset_t
-	valRegex := regexp.MustCompile(`type (Fsid|Sigset_t) struct {(\s+)X__val(\s+\S+\s+)}`)
-	b = valRegex.ReplaceAll(b, []byte("type $1 struct {${2}Val$3}"))
-
-	// Intentionally export __fds_bits field in FdSet
-	fdSetRegex := regexp.MustCompile(`type (FdSet) struct {(\s+)X__fds_bits(\s+\S+\s+)}`)
-	b = fdSetRegex.ReplaceAll(b, []byte("type $1 struct {${2}Bits$3}"))
-
-	// If we have empty Ptrace structs, we should delete them. Only s390x emits
-	// nonempty Ptrace structs.
-	ptraceRexexp := regexp.MustCompile(`type Ptrace((Psw|Fpregs|Per) struct {\s*})`)
-	b = ptraceRexexp.ReplaceAll(b, nil)
-
-	// Replace the control_regs union with a blank identifier for now.
-	controlRegsRegex := regexp.MustCompile(`(Control_regs)\s+\[0\]uint64`)
-	b = controlRegsRegex.ReplaceAll(b, []byte("_ [0]uint64"))
-
-	// Remove fields that are added by glibc
-	// Note that this is unstable as the identifers are private.
-	removeFieldsRegex := regexp.MustCompile(`X__glibc\S*`)
-	b = removeFieldsRegex.ReplaceAll(b, []byte("_"))
-
-	// Convert [65]int8 to [65]byte in Utsname members to simplify
-	// conversion to string; see golang.org/issue/20753
-	convertUtsnameRegex := regexp.MustCompile(`((Sys|Node|Domain)name|Release|Version|Machine)(\s+)\[(\d+)\]u?int8`)
-	b = convertUtsnameRegex.ReplaceAll(b, []byte("$1$3[$4]byte"))
-
-	// Convert [1024]int8 to [1024]byte in Ptmget members
-	convertPtmget := regexp.MustCompile(`([SC]n)(\s+)\[(\d+)\]u?int8`)
-	b = convertPtmget.ReplaceAll(b, []byte("$1[$3]byte"))
-
-	// Remove spare fields (e.g. in Statx_t)
-	spareFieldsRegex := regexp.MustCompile(`X__spare\S*`)
-	b = spareFieldsRegex.ReplaceAll(b, []byte("_"))
-
-	// Remove cgo padding fields
-	removePaddingFieldsRegex := regexp.MustCompile(`Pad_cgo_\d+`)
-	b = removePaddingFieldsRegex.ReplaceAll(b, []byte("_"))
-
-	// Remove padding, hidden, or unused fields
-	removeFieldsRegex = regexp.MustCompile(`\b(X_\S+|Padding)`)
-	b = removeFieldsRegex.ReplaceAll(b, []byte("_"))
-
-	// Remove the first line of warning from cgo
-	b = b[bytes.IndexByte(b, '\n')+1:]
-	// Modify the command in the header to include:
-	//  mkpost, our own warning, and a build tag.
-	replacement := fmt.Sprintf(`$1 | go run mkpost.go
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build %s,%s`, goarch, goos)
-	cgoCommandRegex := regexp.MustCompile(`(cgo -godefs .*)`)
-	b = cgoCommandRegex.ReplaceAll(b, []byte(replacement))
-
-	// gofmt
-	b, err = format.Source(b)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	os.Stdout.Write(b)
-}
diff --git a/vendor/golang.org/x/sys/unix/mksyscall.go b/vendor/golang.org/x/sys/unix/mksyscall.go
deleted file mode 100644
index bed93d48..00000000
--- a/vendor/golang.org/x/sys/unix/mksyscall.go
+++ /dev/null
@@ -1,402 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
-This program reads a file containing function prototypes
-(like syscall_darwin.go) and generates system call bodies.
-The prototypes are marked by lines beginning with "//sys"
-and read like func declarations if //sys is replaced by func, but:
-	* The parameter lists must give a name for each argument.
-	  This includes return parameters.
-	* The parameter lists must give a type for each argument:
-	  the (x, y, z int) shorthand is not allowed.
-	* If the return parameter is an error number, it must be named errno.
-
-A line beginning with //sysnb is like //sys, except that the
-goroutine will not be suspended during the execution of the system
-call.  This must only be used for system calls which can never
-block, as otherwise the system call could cause all goroutines to
-hang.
-*/
-package main
-
-import (
-	"bufio"
-	"flag"
-	"fmt"
-	"os"
-	"regexp"
-	"strings"
-)
-
-var (
-	b32       = flag.Bool("b32", false, "32bit big-endian")
-	l32       = flag.Bool("l32", false, "32bit little-endian")
-	plan9     = flag.Bool("plan9", false, "plan9")
-	openbsd   = flag.Bool("openbsd", false, "openbsd")
-	netbsd    = flag.Bool("netbsd", false, "netbsd")
-	dragonfly = flag.Bool("dragonfly", false, "dragonfly")
-	arm       = flag.Bool("arm", false, "arm") // 64-bit value should use (even, odd)-pair
-	tags      = flag.String("tags", "", "build tags")
-	filename  = flag.String("output", "", "output file name (standard output if omitted)")
-)
-
-// cmdLine returns this programs's commandline arguments
-func cmdLine() string {
-	return "go run mksyscall.go " + strings.Join(os.Args[1:], " ")
-}
-
-// buildTags returns build tags
-func buildTags() string {
-	return *tags
-}
-
-// Param is function parameter
-type Param struct {
-	Name string
-	Type string
-}
-
-// usage prints the program usage
-func usage() {
-	fmt.Fprintf(os.Stderr, "usage: go run mksyscall.go [-b32 | -l32] [-tags x,y] [file ...]\n")
-	os.Exit(1)
-}
-
-// parseParamList parses parameter list and returns a slice of parameters
-func parseParamList(list string) []string {
-	list = strings.TrimSpace(list)
-	if list == "" {
-		return []string{}
-	}
-	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
-}
-
-// parseParam splits a parameter into name and type
-func parseParam(p string) Param {
-	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
-	if ps == nil {
-		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
-		os.Exit(1)
-	}
-	return Param{ps[1], ps[2]}
-}
-
-func main() {
-	// Get the OS and architecture (using GOARCH_TARGET if it exists)
-	goos := os.Getenv("GOOS")
-	if goos == "" {
-		fmt.Fprintln(os.Stderr, "GOOS not defined in environment")
-		os.Exit(1)
-	}
-	goarch := os.Getenv("GOARCH_TARGET")
-	if goarch == "" {
-		goarch = os.Getenv("GOARCH")
-	}
-
-	// Check that we are using the Docker-based build system if we should
-	if goos == "linux" {
-		if os.Getenv("GOLANG_SYS_BUILD") != "docker" {
-			fmt.Fprintf(os.Stderr, "In the Docker-based build system, mksyscall should not be called directly.\n")
-			fmt.Fprintf(os.Stderr, "See README.md\n")
-			os.Exit(1)
-		}
-	}
-
-	flag.Usage = usage
-	flag.Parse()
-	if len(flag.Args()) <= 0 {
-		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
-		usage()
-	}
-
-	endianness := ""
-	if *b32 {
-		endianness = "big-endian"
-	} else if *l32 {
-		endianness = "little-endian"
-	}
-
-	libc := false
-	if goos == "darwin" && strings.Contains(buildTags(), ",go1.12") {
-		libc = true
-	}
-	trampolines := map[string]bool{}
-
-	text := ""
-	for _, path := range flag.Args() {
-		file, err := os.Open(path)
-		if err != nil {
-			fmt.Fprintf(os.Stderr, err.Error())
-			os.Exit(1)
-		}
-		s := bufio.NewScanner(file)
-		for s.Scan() {
-			t := s.Text()
-			t = strings.TrimSpace(t)
-			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
-			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
-			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
-				continue
-			}
-
-			// Line must be of the form
-			//	func Open(path string, mode int, perm int) (fd int, errno error)
-			// Split into name, in params, out params.
-			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*((?i)SYS_[A-Z0-9_]+))?$`).FindStringSubmatch(t)
-			if f == nil {
-				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
-				os.Exit(1)
-			}
-			funct, inps, outps, sysname := f[2], f[3], f[4], f[5]
-
-			// Split argument lists on comma.
-			in := parseParamList(inps)
-			out := parseParamList(outps)
-
-			// Try in vain to keep people from editing this file.
-			// The theory is that they jump into the middle of the file
-			// without reading the header.
-			text += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
-
-			// Go function header.
-			outDecl := ""
-			if len(out) > 0 {
-				outDecl = fmt.Sprintf(" (%s)", strings.Join(out, ", "))
-			}
-			text += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outDecl)
-
-			// Check if err return available
-			errvar := ""
-			for _, param := range out {
-				p := parseParam(param)
-				if p.Type == "error" {
-					errvar = p.Name
-					break
-				}
-			}
-
-			// Prepare arguments to Syscall.
-			var args []string
-			n := 0
-			for _, param := range in {
-				p := parseParam(param)
-				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
-					args = append(args, "uintptr(unsafe.Pointer("+p.Name+"))")
-				} else if p.Type == "string" && errvar != "" {
-					text += fmt.Sprintf("\tvar _p%d *byte\n", n)
-					text += fmt.Sprintf("\t_p%d, %s = BytePtrFromString(%s)\n", n, errvar, p.Name)
-					text += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
-					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
-					n++
-				} else if p.Type == "string" {
-					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
-					text += fmt.Sprintf("\tvar _p%d *byte\n", n)
-					text += fmt.Sprintf("\t_p%d, _ = BytePtrFromString(%s)\n", n, p.Name)
-					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
-					n++
-				} else if regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type) != nil {
-					// Convert slice into pointer, length.
-					// Have to be careful not to take address of &a[0] if len == 0:
-					// pass dummy pointer in that case.
-					// Used to pass nil, but some OSes or simulators reject write(fd, nil, 0).
-					text += fmt.Sprintf("\tvar _p%d unsafe.Pointer\n", n)
-					text += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = unsafe.Pointer(&%s[0])\n\t}", p.Name, n, p.Name)
-					text += fmt.Sprintf(" else {\n\t\t_p%d = unsafe.Pointer(&_zero)\n\t}\n", n)
-					args = append(args, fmt.Sprintf("uintptr(_p%d)", n), fmt.Sprintf("uintptr(len(%s))", p.Name))
-					n++
-				} else if p.Type == "int64" && (*openbsd || *netbsd) {
-					args = append(args, "0")
-					if endianness == "big-endian" {
-						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
-					} else if endianness == "little-endian" {
-						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
-					} else {
-						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
-					}
-				} else if p.Type == "int64" && *dragonfly {
-					if regexp.MustCompile(`^(?i)extp(read|write)`).FindStringSubmatch(funct) == nil {
-						args = append(args, "0")
-					}
-					if endianness == "big-endian" {
-						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
-					} else if endianness == "little-endian" {
-						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
-					} else {
-						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
-					}
-				} else if (p.Type == "int64" || p.Type == "uint64") && endianness != "" {
-					if len(args)%2 == 1 && *arm {
-						// arm abi specifies 64-bit argument uses
-						// (even, odd) pair
-						args = append(args, "0")
-					}
-					if endianness == "big-endian" {
-						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
-					} else {
-						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
-					}
-				} else {
-					args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
-				}
-			}
-
-			// Determine which form to use; pad args with zeros.
-			asm := "Syscall"
-			if nonblock != nil {
-				if errvar == "" && goos == "linux" {
-					asm = "RawSyscallNoError"
-				} else {
-					asm = "RawSyscall"
-				}
-			} else {
-				if errvar == "" && goos == "linux" {
-					asm = "SyscallNoError"
-				}
-			}
-			if len(args) <= 3 {
-				for len(args) < 3 {
-					args = append(args, "0")
-				}
-			} else if len(args) <= 6 {
-				asm += "6"
-				for len(args) < 6 {
-					args = append(args, "0")
-				}
-			} else if len(args) <= 9 {
-				asm += "9"
-				for len(args) < 9 {
-					args = append(args, "0")
-				}
-			} else {
-				fmt.Fprintf(os.Stderr, "%s:%s too many arguments to system call\n", path, funct)
-			}
-
-			// System call number.
-			if sysname == "" {
-				sysname = "SYS_" + funct
-				sysname = regexp.MustCompile(`([a-z])([A-Z])`).ReplaceAllString(sysname, `${1}_$2`)
-				sysname = strings.ToUpper(sysname)
-			}
-
-			var libcFn string
-			if libc {
-				asm = "syscall_" + strings.ToLower(asm[:1]) + asm[1:] // internal syscall call
-				sysname = strings.TrimPrefix(sysname, "SYS_")         // remove SYS_
-				sysname = strings.ToLower(sysname)                    // lowercase
-				if sysname == "getdirentries64" {
-					// Special case - libSystem name and
-					// raw syscall name don't match.
-					sysname = "__getdirentries64"
-				}
-				libcFn = sysname
-				sysname = "funcPC(libc_" + sysname + "_trampoline)"
-			}
-
-			// Actual call.
-			arglist := strings.Join(args, ", ")
-			call := fmt.Sprintf("%s(%s, %s)", asm, sysname, arglist)
-
-			// Assign return values.
-			body := ""
-			ret := []string{"_", "_", "_"}
-			doErrno := false
-			for i := 0; i < len(out); i++ {
-				p := parseParam(out[i])
-				reg := ""
-				if p.Name == "err" && !*plan9 {
-					reg = "e1"
-					ret[2] = reg
-					doErrno = true
-				} else if p.Name == "err" && *plan9 {
-					ret[0] = "r0"
-					ret[2] = "e1"
-					break
-				} else {
-					reg = fmt.Sprintf("r%d", i)
-					ret[i] = reg
-				}
-				if p.Type == "bool" {
-					reg = fmt.Sprintf("%s != 0", reg)
-				}
-				if p.Type == "int64" && endianness != "" {
-					// 64-bit number in r1:r0 or r0:r1.
-					if i+2 > len(out) {
-						fmt.Fprintf(os.Stderr, "%s:%s not enough registers for int64 return\n", path, funct)
-					}
-					if endianness == "big-endian" {
-						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i, i+1)
-					} else {
-						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i+1, i)
-					}
-					ret[i] = fmt.Sprintf("r%d", i)
-					ret[i+1] = fmt.Sprintf("r%d", i+1)
-				}
-				if reg != "e1" || *plan9 {
-					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
-				}
-			}
-			if ret[0] == "_" && ret[1] == "_" && ret[2] == "_" {
-				text += fmt.Sprintf("\t%s\n", call)
-			} else {
-				if errvar == "" && goos == "linux" {
-					// raw syscall without error on Linux, see golang.org/issue/22924
-					text += fmt.Sprintf("\t%s, %s := %s\n", ret[0], ret[1], call)
-				} else {
-					text += fmt.Sprintf("\t%s, %s, %s := %s\n", ret[0], ret[1], ret[2], call)
-				}
-			}
-			text += body
-
-			if *plan9 && ret[2] == "e1" {
-				text += "\tif int32(r0) == -1 {\n"
-				text += "\t\terr = e1\n"
-				text += "\t}\n"
-			} else if doErrno {
-				text += "\tif e1 != 0 {\n"
-				text += "\t\terr = errnoErr(e1)\n"
-				text += "\t}\n"
-			}
-			text += "\treturn\n"
-			text += "}\n\n"
-
-			if libc && !trampolines[libcFn] {
-				// some system calls share a trampoline, like read and readlen.
-				trampolines[libcFn] = true
-				// Declare assembly trampoline.
-				text += fmt.Sprintf("func libc_%s_trampoline()\n", libcFn)
-				// Assembly trampoline calls the libc_* function, which this magic
-				// redirects to use the function from libSystem.
-				text += fmt.Sprintf("//go:linkname libc_%s libc_%s\n", libcFn, libcFn)
-				text += fmt.Sprintf("//go:cgo_import_dynamic libc_%s %s \"/usr/lib/libSystem.B.dylib\"\n", libcFn, libcFn)
-				text += "\n"
-			}
-		}
-		if err := s.Err(); err != nil {
-			fmt.Fprintf(os.Stderr, err.Error())
-			os.Exit(1)
-		}
-		file.Close()
-	}
-	fmt.Printf(srcTemplate, cmdLine(), buildTags(), text)
-}
-
-const srcTemplate = `// %s
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build %s
-
-package unix
-
-import (
-	"syscall"
-	"unsafe"
-)
-
-var _ syscall.Errno
-
-%s
-`
diff --git a/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.go b/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.go
deleted file mode 100644
index f2c58fb7..00000000
--- a/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.go
+++ /dev/null
@@ -1,404 +0,0 @@
-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
-This program reads a file containing function prototypes
-(like syscall_aix.go) and generates system call bodies.
-The prototypes are marked by lines beginning with "//sys"
-and read like func declarations if //sys is replaced by func, but:
-	* The parameter lists must give a name for each argument.
-	  This includes return parameters.
-	* The parameter lists must give a type for each argument:
-	  the (x, y, z int) shorthand is not allowed.
-	* If the return parameter is an error number, it must be named err.
-	* If go func name needs to be different than its libc name,
-	* or the function is not in libc, name could be specified
-	* at the end, after "=" sign, like
-	  //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
-*/
-package main
-
-import (
-	"bufio"
-	"flag"
-	"fmt"
-	"os"
-	"regexp"
-	"strings"
-)
-
-var (
-	b32  = flag.Bool("b32", false, "32bit big-endian")
-	l32  = flag.Bool("l32", false, "32bit little-endian")
-	aix  = flag.Bool("aix", false, "aix")
-	tags = flag.String("tags", "", "build tags")
-)
-
-// cmdLine returns this programs's commandline arguments
-func cmdLine() string {
-	return "go run mksyscall_aix_ppc.go " + strings.Join(os.Args[1:], " ")
-}
-
-// buildTags returns build tags
-func buildTags() string {
-	return *tags
-}
-
-// Param is function parameter
-type Param struct {
-	Name string
-	Type string
-}
-
-// usage prints the program usage
-func usage() {
-	fmt.Fprintf(os.Stderr, "usage: go run mksyscall_aix_ppc.go [-b32 | -l32] [-tags x,y] [file ...]\n")
-	os.Exit(1)
-}
-
-// parseParamList parses parameter list and returns a slice of parameters
-func parseParamList(list string) []string {
-	list = strings.TrimSpace(list)
-	if list == "" {
-		return []string{}
-	}
-	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
-}
-
-// parseParam splits a parameter into name and type
-func parseParam(p string) Param {
-	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
-	if ps == nil {
-		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
-		os.Exit(1)
-	}
-	return Param{ps[1], ps[2]}
-}
-
-func main() {
-	flag.Usage = usage
-	flag.Parse()
-	if len(flag.Args()) <= 0 {
-		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
-		usage()
-	}
-
-	endianness := ""
-	if *b32 {
-		endianness = "big-endian"
-	} else if *l32 {
-		endianness = "little-endian"
-	}
-
-	pack := ""
-	text := ""
-	cExtern := "/*\n#include <stdint.h>\n#include <stddef.h>\n"
-	for _, path := range flag.Args() {
-		file, err := os.Open(path)
-		if err != nil {
-			fmt.Fprintf(os.Stderr, err.Error())
-			os.Exit(1)
-		}
-		s := bufio.NewScanner(file)
-		for s.Scan() {
-			t := s.Text()
-			t = strings.TrimSpace(t)
-			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
-			if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
-				pack = p[1]
-			}
-			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
-			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
-				continue
-			}
-
-			// Line must be of the form
-			//	func Open(path string, mode int, perm int) (fd int, err error)
-			// Split into name, in params, out params.
-			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
-			if f == nil {
-				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
-				os.Exit(1)
-			}
-			funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
-
-			// Split argument lists on comma.
-			in := parseParamList(inps)
-			out := parseParamList(outps)
-
-			inps = strings.Join(in, ", ")
-			outps = strings.Join(out, ", ")
-
-			// Try in vain to keep people from editing this file.
-			// The theory is that they jump into the middle of the file
-			// without reading the header.
-			text += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
-
-			// Check if value return, err return available
-			errvar := ""
-			retvar := ""
-			rettype := ""
-			for _, param := range out {
-				p := parseParam(param)
-				if p.Type == "error" {
-					errvar = p.Name
-				} else {
-					retvar = p.Name
-					rettype = p.Type
-				}
-			}
-
-			// System call name.
-			if sysname == "" {
-				sysname = funct
-			}
-			sysname = regexp.MustCompile(`([a-z])([A-Z])`).ReplaceAllString(sysname, `${1}_$2`)
-			sysname = strings.ToLower(sysname) // All libc functions are lowercase.
-
-			cRettype := ""
-			if rettype == "unsafe.Pointer" {
-				cRettype = "uintptr_t"
-			} else if rettype == "uintptr" {
-				cRettype = "uintptr_t"
-			} else if regexp.MustCompile(`^_`).FindStringSubmatch(rettype) != nil {
-				cRettype = "uintptr_t"
-			} else if rettype == "int" {
-				cRettype = "int"
-			} else if rettype == "int32" {
-				cRettype = "int"
-			} else if rettype == "int64" {
-				cRettype = "long long"
-			} else if rettype == "uint32" {
-				cRettype = "unsigned int"
-			} else if rettype == "uint64" {
-				cRettype = "unsigned long long"
-			} else {
-				cRettype = "int"
-			}
-			if sysname == "exit" {
-				cRettype = "void"
-			}
-
-			// Change p.Types to c
-			var cIn []string
-			for _, param := range in {
-				p := parseParam(param)
-				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
-					cIn = append(cIn, "uintptr_t")
-				} else if p.Type == "string" {
-					cIn = append(cIn, "uintptr_t")
-				} else if regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type) != nil {
-					cIn = append(cIn, "uintptr_t", "size_t")
-				} else if p.Type == "unsafe.Pointer" {
-					cIn = append(cIn, "uintptr_t")
-				} else if p.Type == "uintptr" {
-					cIn = append(cIn, "uintptr_t")
-				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil {
-					cIn = append(cIn, "uintptr_t")
-				} else if p.Type == "int" {
-					cIn = append(cIn, "int")
-				} else if p.Type == "int32" {
-					cIn = append(cIn, "int")
-				} else if p.Type == "int64" {
-					cIn = append(cIn, "long long")
-				} else if p.Type == "uint32" {
-					cIn = append(cIn, "unsigned int")
-				} else if p.Type == "uint64" {
-					cIn = append(cIn, "unsigned long long")
-				} else {
-					cIn = append(cIn, "int")
-				}
-			}
-
-			if funct != "fcntl" && funct != "FcntlInt" && funct != "readlen" && funct != "writelen" {
-				// Imports of system calls from libc
-				cExtern += fmt.Sprintf("%s %s", cRettype, sysname)
-				cIn := strings.Join(cIn, ", ")
-				cExtern += fmt.Sprintf("(%s);\n", cIn)
-			}
-
-			// So file name.
-			if *aix {
-				if modname == "" {
-					modname = "libc.a/shr_64.o"
-				} else {
-					fmt.Fprintf(os.Stderr, "%s: only syscall using libc are available\n", funct)
-					os.Exit(1)
-				}
-			}
-
-			strconvfunc := "C.CString"
-
-			// Go function header.
-			if outps != "" {
-				outps = fmt.Sprintf(" (%s)", outps)
-			}
-			if text != "" {
-				text += "\n"
-			}
-
-			text += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outps)
-
-			// Prepare arguments to Syscall.
-			var args []string
-			n := 0
-			argN := 0
-			for _, param := range in {
-				p := parseParam(param)
-				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
-					args = append(args, "C.uintptr_t(uintptr(unsafe.Pointer("+p.Name+")))")
-				} else if p.Type == "string" && errvar != "" {
-					text += fmt.Sprintf("\t_p%d := uintptr(unsafe.Pointer(%s(%s)))\n", n, strconvfunc, p.Name)
-					args = append(args, fmt.Sprintf("C.uintptr_t(_p%d)", n))
-					n++
-				} else if p.Type == "string" {
-					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
-					text += fmt.Sprintf("\t_p%d := uintptr(unsafe.Pointer(%s(%s)))\n", n, strconvfunc, p.Name)
-					args = append(args, fmt.Sprintf("C.uintptr_t(_p%d)", n))
-					n++
-				} else if m := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); m != nil {
-					// Convert slice into pointer, length.
-					// Have to be careful not to take address of &a[0] if len == 0:
-					// pass nil in that case.
-					text += fmt.Sprintf("\tvar _p%d *%s\n", n, m[1])
-					text += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
-					args = append(args, fmt.Sprintf("C.uintptr_t(uintptr(unsafe.Pointer(_p%d)))", n))
-					n++
-					text += fmt.Sprintf("\tvar _p%d int\n", n)
-					text += fmt.Sprintf("\t_p%d = len(%s)\n", n, p.Name)
-					args = append(args, fmt.Sprintf("C.size_t(_p%d)", n))
-					n++
-				} else if p.Type == "int64" && endianness != "" {
-					if endianness == "big-endian" {
-						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
-					} else {
-						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
-					}
-					n++
-				} else if p.Type == "bool" {
-					text += fmt.Sprintf("\tvar _p%d uint32\n", n)
-					text += fmt.Sprintf("\tif %s {\n\t\t_p%d = 1\n\t} else {\n\t\t_p%d = 0\n\t}\n", p.Name, n, n)
-					args = append(args, fmt.Sprintf("_p%d", n))
-				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil {
-					args = append(args, fmt.Sprintf("C.uintptr_t(uintptr(%s))", p.Name))
-				} else if p.Type == "unsafe.Pointer" {
-					args = append(args, fmt.Sprintf("C.uintptr_t(uintptr(%s))", p.Name))
-				} else if p.Type == "int" {
-					if (argN == 2) && ((funct == "readlen") || (funct == "writelen")) {
-						args = append(args, fmt.Sprintf("C.size_t(%s)", p.Name))
-					} else if argN == 0 && funct == "fcntl" {
-						args = append(args, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
-					} else if (argN == 2) && ((funct == "fcntl") || (funct == "FcntlInt")) {
-						args = append(args, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
-					} else {
-						args = append(args, fmt.Sprintf("C.int(%s)", p.Name))
-					}
-				} else if p.Type == "int32" {
-					args = append(args, fmt.Sprintf("C.int(%s)", p.Name))
-				} else if p.Type == "int64" {
-					args = append(args, fmt.Sprintf("C.longlong(%s)", p.Name))
-				} else if p.Type == "uint32" {
-					args = append(args, fmt.Sprintf("C.uint(%s)", p.Name))
-				} else if p.Type == "uint64" {
-					args = append(args, fmt.Sprintf("C.ulonglong(%s)", p.Name))
-				} else if p.Type == "uintptr" {
-					args = append(args, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
-				} else {
-					args = append(args, fmt.Sprintf("C.int(%s)", p.Name))
-				}
-				argN++
-			}
-
-			// Actual call.
-			arglist := strings.Join(args, ", ")
-			call := ""
-			if sysname == "exit" {
-				if errvar != "" {
-					call += "er :="
-				} else {
-					call += ""
-				}
-			} else if errvar != "" {
-				call += "r0,er :="
-			} else if retvar != "" {
-				call += "r0,_ :="
-			} else {
-				call += ""
-			}
-			call += fmt.Sprintf("C.%s(%s)", sysname, arglist)
-
-			// Assign return values.
-			body := ""
-			for i := 0; i < len(out); i++ {
-				p := parseParam(out[i])
-				reg := ""
-				if p.Name == "err" {
-					reg = "e1"
-				} else {
-					reg = "r0"
-				}
-				if reg != "e1" {
-					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
-				}
-			}
-
-			// verify return
-			if sysname != "exit" && errvar != "" {
-				if regexp.MustCompile(`^uintptr`).FindStringSubmatch(cRettype) != nil {
-					body += "\tif (uintptr(r0) ==^uintptr(0) && er != nil) {\n"
-					body += fmt.Sprintf("\t\t%s = er\n", errvar)
-					body += "\t}\n"
-				} else {
-					body += "\tif (r0 ==-1 && er != nil) {\n"
-					body += fmt.Sprintf("\t\t%s = er\n", errvar)
-					body += "\t}\n"
-				}
-			} else if errvar != "" {
-				body += "\tif (er != nil) {\n"
-				body += fmt.Sprintf("\t\t%s = er\n", errvar)
-				body += "\t}\n"
-			}
-
-			text += fmt.Sprintf("\t%s\n", call)
-			text += body
-
-			text += "\treturn\n"
-			text += "}\n"
-		}
-		if err := s.Err(); err != nil {
-			fmt.Fprintf(os.Stderr, err.Error())
-			os.Exit(1)
-		}
-		file.Close()
-	}
-	imp := ""
-	if pack != "unix" {
-		imp = "import \"golang.org/x/sys/unix\"\n"
-
-	}
-	fmt.Printf(srcTemplate, cmdLine(), buildTags(), pack, cExtern, imp, text)
-}
-
-const srcTemplate = `// %s
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build %s
-
-package %s
-
-
-%s
-*/
-import "C"
-import (
-	"unsafe"
-)
-
-
-%s
-
-%s
-`
diff --git a/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.go b/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.go
deleted file mode 100644
index 45b44290..00000000
--- a/vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.go
+++ /dev/null
@@ -1,602 +0,0 @@
-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
-This program reads a file containing function prototypes
-(like syscall_aix.go) and generates system call bodies.
-The prototypes are marked by lines beginning with "//sys"
-and read like func declarations if //sys is replaced by func, but:
-	* The parameter lists must give a name for each argument.
-	  This includes return parameters.
-	* The parameter lists must give a type for each argument:
-	  the (x, y, z int) shorthand is not allowed.
-	* If the return parameter is an error number, it must be named err.
-	* If go func name needs to be different than its libc name,
-	* or the function is not in libc, name could be specified
-	* at the end, after "=" sign, like
-	  //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
-
-
-This program will generate three files and handle both gc and gccgo implementation:
-  - zsyscall_aix_ppc64.go: the common part of each implementation (error handler, pointer creation)
-  - zsyscall_aix_ppc64_gc.go: gc part with //go_cgo_import_dynamic and a call to syscall6
-  - zsyscall_aix_ppc64_gccgo.go: gccgo part with C function and conversion to C type.
-
- The generated code looks like this
-
-zsyscall_aix_ppc64.go
-func asyscall(...) (n int, err error) {
-	 // Pointer Creation
-	 r1, e1 := callasyscall(...)
-	 // Type Conversion
-	 // Error Handler
-	 return
-}
-
-zsyscall_aix_ppc64_gc.go
-//go:cgo_import_dynamic libc_asyscall asyscall "libc.a/shr_64.o"
-//go:linkname libc_asyscall libc_asyscall
-var asyscall syscallFunc
-
-func callasyscall(...) (r1 uintptr, e1 Errno) {
-	 r1, _, e1 = syscall6(uintptr(unsafe.Pointer(&libc_asyscall)), "nb_args", ... )
-	 return
-}
-
-zsyscall_aix_ppc64_ggcgo.go
-
-// int asyscall(...)
-
-import "C"
-
-func callasyscall(...) (r1 uintptr, e1 Errno) {
-	 r1 = uintptr(C.asyscall(...))
-	 e1 = syscall.GetErrno()
-	 return
-}
-*/
-
-package main
-
-import (
-	"bufio"
-	"flag"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"regexp"
-	"strings"
-)
-
-var (
-	b32  = flag.Bool("b32", false, "32bit big-endian")
-	l32  = flag.Bool("l32", false, "32bit little-endian")
-	aix  = flag.Bool("aix", false, "aix")
-	tags = flag.String("tags", "", "build tags")
-)
-
-// cmdLine returns this programs's commandline arguments
-func cmdLine() string {
-	return "go run mksyscall_aix_ppc64.go " + strings.Join(os.Args[1:], " ")
-}
-
-// buildTags returns build tags
-func buildTags() string {
-	return *tags
-}
-
-// Param is function parameter
-type Param struct {
-	Name string
-	Type string
-}
-
-// usage prints the program usage
-func usage() {
-	fmt.Fprintf(os.Stderr, "usage: go run mksyscall_aix_ppc64.go [-b32 | -l32] [-tags x,y] [file ...]\n")
-	os.Exit(1)
-}
-
-// parseParamList parses parameter list and returns a slice of parameters
-func parseParamList(list string) []string {
-	list = strings.TrimSpace(list)
-	if list == "" {
-		return []string{}
-	}
-	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
-}
-
-// parseParam splits a parameter into name and type
-func parseParam(p string) Param {
-	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
-	if ps == nil {
-		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
-		os.Exit(1)
-	}
-	return Param{ps[1], ps[2]}
-}
-
-func main() {
-	flag.Usage = usage
-	flag.Parse()
-	if len(flag.Args()) <= 0 {
-		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
-		usage()
-	}
-
-	endianness := ""
-	if *b32 {
-		endianness = "big-endian"
-	} else if *l32 {
-		endianness = "little-endian"
-	}
-
-	pack := ""
-	// GCCGO
-	textgccgo := ""
-	cExtern := "/*\n#include <stdint.h>\n"
-	// GC
-	textgc := ""
-	dynimports := ""
-	linknames := ""
-	var vars []string
-	// COMMON
-	textcommon := ""
-	for _, path := range flag.Args() {
-		file, err := os.Open(path)
-		if err != nil {
-			fmt.Fprintf(os.Stderr, err.Error())
-			os.Exit(1)
-		}
-		s := bufio.NewScanner(file)
-		for s.Scan() {
-			t := s.Text()
-			t = strings.TrimSpace(t)
-			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
-			if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
-				pack = p[1]
-			}
-			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
-			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
-				continue
-			}
-
-			// Line must be of the form
-			//	func Open(path string, mode int, perm int) (fd int, err error)
-			// Split into name, in params, out params.
-			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
-			if f == nil {
-				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
-				os.Exit(1)
-			}
-			funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
-
-			// Split argument lists on comma.
-			in := parseParamList(inps)
-			out := parseParamList(outps)
-
-			inps = strings.Join(in, ", ")
-			outps = strings.Join(out, ", ")
-
-			if sysname == "" {
-				sysname = funct
-			}
-
-			onlyCommon := false
-			if funct == "readlen" || funct == "writelen" || funct == "FcntlInt" || funct == "FcntlFlock" {
-				// This function call another syscall which is already implemented.
-				// Therefore, the gc and gccgo part must not be generated.
-				onlyCommon = true
-			}
-
-			// Try in vain to keep people from editing this file.
-			// The theory is that they jump into the middle of the file
-			// without reading the header.
-
-			textcommon += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
-			if !onlyCommon {
-				textgccgo += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
-				textgc += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
-			}
-
-			// Check if value return, err return available
-			errvar := ""
-			rettype := ""
-			for _, param := range out {
-				p := parseParam(param)
-				if p.Type == "error" {
-					errvar = p.Name
-				} else {
-					rettype = p.Type
-				}
-			}
-
-			sysname = regexp.MustCompile(`([a-z])([A-Z])`).ReplaceAllString(sysname, `${1}_$2`)
-			sysname = strings.ToLower(sysname) // All libc functions are lowercase.
-
-			// GCCGO Prototype return type
-			cRettype := ""
-			if rettype == "unsafe.Pointer" {
-				cRettype = "uintptr_t"
-			} else if rettype == "uintptr" {
-				cRettype = "uintptr_t"
-			} else if regexp.MustCompile(`^_`).FindStringSubmatch(rettype) != nil {
-				cRettype = "uintptr_t"
-			} else if rettype == "int" {
-				cRettype = "int"
-			} else if rettype == "int32" {
-				cRettype = "int"
-			} else if rettype == "int64" {
-				cRettype = "long long"
-			} else if rettype == "uint32" {
-				cRettype = "unsigned int"
-			} else if rettype == "uint64" {
-				cRettype = "unsigned long long"
-			} else {
-				cRettype = "int"
-			}
-			if sysname == "exit" {
-				cRettype = "void"
-			}
-
-			// GCCGO Prototype arguments type
-			var cIn []string
-			for i, param := range in {
-				p := parseParam(param)
-				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
-					cIn = append(cIn, "uintptr_t")
-				} else if p.Type == "string" {
-					cIn = append(cIn, "uintptr_t")
-				} else if regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type) != nil {
-					cIn = append(cIn, "uintptr_t", "size_t")
-				} else if p.Type == "unsafe.Pointer" {
-					cIn = append(cIn, "uintptr_t")
-				} else if p.Type == "uintptr" {
-					cIn = append(cIn, "uintptr_t")
-				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil {
-					cIn = append(cIn, "uintptr_t")
-				} else if p.Type == "int" {
-					if (i == 0 || i == 2) && funct == "fcntl" {
-						// These fcntl arguments needs to be uintptr to be able to call FcntlInt and FcntlFlock
-						cIn = append(cIn, "uintptr_t")
-					} else {
-						cIn = append(cIn, "int")
-					}
-
-				} else if p.Type == "int32" {
-					cIn = append(cIn, "int")
-				} else if p.Type == "int64" {
-					cIn = append(cIn, "long long")
-				} else if p.Type == "uint32" {
-					cIn = append(cIn, "unsigned int")
-				} else if p.Type == "uint64" {
-					cIn = append(cIn, "unsigned long long")
-				} else {
-					cIn = append(cIn, "int")
-				}
-			}
-
-			if !onlyCommon {
-				// GCCGO Prototype Generation
-				// Imports of system calls from libc
-				cExtern += fmt.Sprintf("%s %s", cRettype, sysname)
-				cIn := strings.Join(cIn, ", ")
-				cExtern += fmt.Sprintf("(%s);\n", cIn)
-			}
-			// GC Library name
-			if modname == "" {
-				modname = "libc.a/shr_64.o"
-			} else {
-				fmt.Fprintf(os.Stderr, "%s: only syscall using libc are available\n", funct)
-				os.Exit(1)
-			}
-			sysvarname := fmt.Sprintf("libc_%s", sysname)
-
-			if !onlyCommon {
-				// GC Runtime import of function to allow cross-platform builds.
-				dynimports += fmt.Sprintf("//go:cgo_import_dynamic %s %s \"%s\"\n", sysvarname, sysname, modname)
-				// GC Link symbol to proc address variable.
-				linknames += fmt.Sprintf("//go:linkname %s %s\n", sysvarname, sysvarname)
-				// GC Library proc address variable.
-				vars = append(vars, sysvarname)
-			}
-
-			strconvfunc := "BytePtrFromString"
-			strconvtype := "*byte"
-
-			// Go function header.
-			if outps != "" {
-				outps = fmt.Sprintf(" (%s)", outps)
-			}
-			if textcommon != "" {
-				textcommon += "\n"
-			}
-
-			textcommon += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outps)
-
-			// Prepare arguments tocall.
-			var argscommon []string // Arguments in the common part
-			var argscall []string   // Arguments for call prototype
-			var argsgc []string     // Arguments for gc call (with syscall6)
-			var argsgccgo []string  // Arguments for gccgo call (with C.name_of_syscall)
-			n := 0
-			argN := 0
-			for _, param := range in {
-				p := parseParam(param)
-				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
-					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(%s))", p.Name))
-					argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
-					argsgc = append(argsgc, p.Name)
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
-				} else if p.Type == "string" && errvar != "" {
-					textcommon += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
-					textcommon += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
-					textcommon += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
-
-					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
-					argscall = append(argscall, fmt.Sprintf("_p%d uintptr ", n))
-					argsgc = append(argsgc, fmt.Sprintf("_p%d", n))
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n))
-					n++
-				} else if p.Type == "string" {
-					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
-					textcommon += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
-					textcommon += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
-					textcommon += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
-
-					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
-					argscall = append(argscall, fmt.Sprintf("_p%d uintptr", n))
-					argsgc = append(argsgc, fmt.Sprintf("_p%d", n))
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n))
-					n++
-				} else if m := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); m != nil {
-					// Convert slice into pointer, length.
-					// Have to be careful not to take address of &a[0] if len == 0:
-					// pass nil in that case.
-					textcommon += fmt.Sprintf("\tvar _p%d *%s\n", n, m[1])
-					textcommon += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
-					argscommon = append(argscommon, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n), fmt.Sprintf("len(%s)", p.Name))
-					argscall = append(argscall, fmt.Sprintf("_p%d uintptr", n), fmt.Sprintf("_lenp%d int", n))
-					argsgc = append(argsgc, fmt.Sprintf("_p%d", n), fmt.Sprintf("uintptr(_lenp%d)", n))
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(_p%d)", n), fmt.Sprintf("C.size_t(_lenp%d)", n))
-					n++
-				} else if p.Type == "int64" && endianness != "" {
-					fmt.Fprintf(os.Stderr, path+":"+funct+" uses int64 with 32 bits mode. Case not yet implemented\n")
-				} else if p.Type == "bool" {
-					fmt.Fprintf(os.Stderr, path+":"+funct+" uses bool. Case not yet implemented\n")
-				} else if regexp.MustCompile(`^_`).FindStringSubmatch(p.Type) != nil || p.Type == "unsafe.Pointer" {
-					argscommon = append(argscommon, fmt.Sprintf("uintptr(%s)", p.Name))
-					argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
-					argsgc = append(argsgc, p.Name)
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
-				} else if p.Type == "int" {
-					if (argN == 0 || argN == 2) && ((funct == "fcntl") || (funct == "FcntlInt") || (funct == "FcntlFlock")) {
-						// These fcntl arguments need to be uintptr to be able to call FcntlInt and FcntlFlock
-						argscommon = append(argscommon, fmt.Sprintf("uintptr(%s)", p.Name))
-						argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
-						argsgc = append(argsgc, p.Name)
-						argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
-
-					} else {
-						argscommon = append(argscommon, p.Name)
-						argscall = append(argscall, fmt.Sprintf("%s int", p.Name))
-						argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
-						argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
-					}
-				} else if p.Type == "int32" {
-					argscommon = append(argscommon, p.Name)
-					argscall = append(argscall, fmt.Sprintf("%s int32", p.Name))
-					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
-				} else if p.Type == "int64" {
-					argscommon = append(argscommon, p.Name)
-					argscall = append(argscall, fmt.Sprintf("%s int64", p.Name))
-					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.longlong(%s)", p.Name))
-				} else if p.Type == "uint32" {
-					argscommon = append(argscommon, p.Name)
-					argscall = append(argscall, fmt.Sprintf("%s uint32", p.Name))
-					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uint(%s)", p.Name))
-				} else if p.Type == "uint64" {
-					argscommon = append(argscommon, p.Name)
-					argscall = append(argscall, fmt.Sprintf("%s uint64", p.Name))
-					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.ulonglong(%s)", p.Name))
-				} else if p.Type == "uintptr" {
-					argscommon = append(argscommon, p.Name)
-					argscall = append(argscall, fmt.Sprintf("%s uintptr", p.Name))
-					argsgc = append(argsgc, p.Name)
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.uintptr_t(%s)", p.Name))
-				} else {
-					argscommon = append(argscommon, fmt.Sprintf("int(%s)", p.Name))
-					argscall = append(argscall, fmt.Sprintf("%s int", p.Name))
-					argsgc = append(argsgc, fmt.Sprintf("uintptr(%s)", p.Name))
-					argsgccgo = append(argsgccgo, fmt.Sprintf("C.int(%s)", p.Name))
-				}
-				argN++
-			}
-			nargs := len(argsgc)
-
-			// COMMON function generation
-			argscommonlist := strings.Join(argscommon, ", ")
-			callcommon := fmt.Sprintf("call%s(%s)", sysname, argscommonlist)
-			ret := []string{"_", "_"}
-			body := ""
-			doErrno := false
-			for i := 0; i < len(out); i++ {
-				p := parseParam(out[i])
-				reg := ""
-				if p.Name == "err" {
-					reg = "e1"
-					ret[1] = reg
-					doErrno = true
-				} else {
-					reg = "r0"
-					ret[0] = reg
-				}
-				if p.Type == "bool" {
-					reg = fmt.Sprintf("%s != 0", reg)
-				}
-				if reg != "e1" {
-					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
-				}
-			}
-			if ret[0] == "_" && ret[1] == "_" {
-				textcommon += fmt.Sprintf("\t%s\n", callcommon)
-			} else {
-				textcommon += fmt.Sprintf("\t%s, %s := %s\n", ret[0], ret[1], callcommon)
-			}
-			textcommon += body
-
-			if doErrno {
-				textcommon += "\tif e1 != 0 {\n"
-				textcommon += "\t\terr = errnoErr(e1)\n"
-				textcommon += "\t}\n"
-			}
-			textcommon += "\treturn\n"
-			textcommon += "}\n"
-
-			if onlyCommon {
-				continue
-			}
-
-			// CALL Prototype
-			callProto := fmt.Sprintf("func call%s(%s) (r1 uintptr, e1 Errno) {\n", sysname, strings.Join(argscall, ", "))
-
-			// GC function generation
-			asm := "syscall6"
-			if nonblock != nil {
-				asm = "rawSyscall6"
-			}
-
-			if len(argsgc) <= 6 {
-				for len(argsgc) < 6 {
-					argsgc = append(argsgc, "0")
-				}
-			} else {
-				fmt.Fprintf(os.Stderr, "%s: too many arguments to system call", funct)
-				os.Exit(1)
-			}
-			argsgclist := strings.Join(argsgc, ", ")
-			callgc := fmt.Sprintf("%s(uintptr(unsafe.Pointer(&%s)), %d, %s)", asm, sysvarname, nargs, argsgclist)
-
-			textgc += callProto
-			textgc += fmt.Sprintf("\tr1, _, e1 = %s\n", callgc)
-			textgc += "\treturn\n}\n"
-
-			// GCCGO function generation
-			argsgccgolist := strings.Join(argsgccgo, ", ")
-			callgccgo := fmt.Sprintf("C.%s(%s)", sysname, argsgccgolist)
-			textgccgo += callProto
-			textgccgo += fmt.Sprintf("\tr1 = uintptr(%s)\n", callgccgo)
-			textgccgo += "\te1 = syscall.GetErrno()\n"
-			textgccgo += "\treturn\n}\n"
-		}
-		if err := s.Err(); err != nil {
-			fmt.Fprintf(os.Stderr, err.Error())
-			os.Exit(1)
-		}
-		file.Close()
-	}
-	imp := ""
-	if pack != "unix" {
-		imp = "import \"golang.org/x/sys/unix\"\n"
-
-	}
-
-	// Print zsyscall_aix_ppc64.go
-	err := ioutil.WriteFile("zsyscall_aix_ppc64.go",
-		[]byte(fmt.Sprintf(srcTemplate1, cmdLine(), buildTags(), pack, imp, textcommon)),
-		0644)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, err.Error())
-		os.Exit(1)
-	}
-
-	// Print zsyscall_aix_ppc64_gc.go
-	vardecls := "\t" + strings.Join(vars, ",\n\t")
-	vardecls += " syscallFunc"
-	err = ioutil.WriteFile("zsyscall_aix_ppc64_gc.go",
-		[]byte(fmt.Sprintf(srcTemplate2, cmdLine(), buildTags(), pack, imp, dynimports, linknames, vardecls, textgc)),
-		0644)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, err.Error())
-		os.Exit(1)
-	}
-
-	// Print zsyscall_aix_ppc64_gccgo.go
-	err = ioutil.WriteFile("zsyscall_aix_ppc64_gccgo.go",
-		[]byte(fmt.Sprintf(srcTemplate3, cmdLine(), buildTags(), pack, cExtern, imp, textgccgo)),
-		0644)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, err.Error())
-		os.Exit(1)
-	}
-}
-
-const srcTemplate1 = `// %s
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build %s
-
-package %s
-
-import (
-	"unsafe"
-)
-
-
-%s
-
-%s
-`
-const srcTemplate2 = `// %s
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build %s
-// +build !gccgo
-
-package %s
-
-import (
-	"unsafe"
-)
-%s
-%s
-%s
-type syscallFunc uintptr
-
-var (
-%s
-)
-
-// Implemented in runtime/syscall_aix.go.
-func rawSyscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
-func syscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
-
-%s
-`
-const srcTemplate3 = `// %s
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build %s
-// +build gccgo
-
-package %s
-
-%s
-*/
-import "C"
-import (
-	"syscall"
-)
-
-
-%s
-
-%s
-`
diff --git a/vendor/golang.org/x/sys/unix/mksyscall_solaris.go b/vendor/golang.org/x/sys/unix/mksyscall_solaris.go
deleted file mode 100644
index 3d864738..00000000
--- a/vendor/golang.org/x/sys/unix/mksyscall_solaris.go
+++ /dev/null
@@ -1,335 +0,0 @@
-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
- This program reads a file containing function prototypes
- (like syscall_solaris.go) and generates system call bodies.
- The prototypes are marked by lines beginning with "//sys"
- and read like func declarations if //sys is replaced by func, but:
-	* The parameter lists must give a name for each argument.
-	  This includes return parameters.
-	* The parameter lists must give a type for each argument:
-	  the (x, y, z int) shorthand is not allowed.
-	* If the return parameter is an error number, it must be named err.
-	* If go func name needs to be different than its libc name,
-	* or the function is not in libc, name could be specified
-	* at the end, after "=" sign, like
-	  //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
-*/
-
-package main
-
-import (
-	"bufio"
-	"flag"
-	"fmt"
-	"os"
-	"regexp"
-	"strings"
-)
-
-var (
-	b32  = flag.Bool("b32", false, "32bit big-endian")
-	l32  = flag.Bool("l32", false, "32bit little-endian")
-	tags = flag.String("tags", "", "build tags")
-)
-
-// cmdLine returns this programs's commandline arguments
-func cmdLine() string {
-	return "go run mksyscall_solaris.go " + strings.Join(os.Args[1:], " ")
-}
-
-// buildTags returns build tags
-func buildTags() string {
-	return *tags
-}
-
-// Param is function parameter
-type Param struct {
-	Name string
-	Type string
-}
-
-// usage prints the program usage
-func usage() {
-	fmt.Fprintf(os.Stderr, "usage: go run mksyscall_solaris.go [-b32 | -l32] [-tags x,y] [file ...]\n")
-	os.Exit(1)
-}
-
-// parseParamList parses parameter list and returns a slice of parameters
-func parseParamList(list string) []string {
-	list = strings.TrimSpace(list)
-	if list == "" {
-		return []string{}
-	}
-	return regexp.MustCompile(`\s*,\s*`).Split(list, -1)
-}
-
-// parseParam splits a parameter into name and type
-func parseParam(p string) Param {
-	ps := regexp.MustCompile(`^(\S*) (\S*)$`).FindStringSubmatch(p)
-	if ps == nil {
-		fmt.Fprintf(os.Stderr, "malformed parameter: %s\n", p)
-		os.Exit(1)
-	}
-	return Param{ps[1], ps[2]}
-}
-
-func main() {
-	flag.Usage = usage
-	flag.Parse()
-	if len(flag.Args()) <= 0 {
-		fmt.Fprintf(os.Stderr, "no files to parse provided\n")
-		usage()
-	}
-
-	endianness := ""
-	if *b32 {
-		endianness = "big-endian"
-	} else if *l32 {
-		endianness = "little-endian"
-	}
-
-	pack := ""
-	text := ""
-	dynimports := ""
-	linknames := ""
-	var vars []string
-	for _, path := range flag.Args() {
-		file, err := os.Open(path)
-		if err != nil {
-			fmt.Fprintf(os.Stderr, err.Error())
-			os.Exit(1)
-		}
-		s := bufio.NewScanner(file)
-		for s.Scan() {
-			t := s.Text()
-			t = strings.TrimSpace(t)
-			t = regexp.MustCompile(`\s+`).ReplaceAllString(t, ` `)
-			if p := regexp.MustCompile(`^package (\S+)$`).FindStringSubmatch(t); p != nil && pack == "" {
-				pack = p[1]
-			}
-			nonblock := regexp.MustCompile(`^\/\/sysnb `).FindStringSubmatch(t)
-			if regexp.MustCompile(`^\/\/sys `).FindStringSubmatch(t) == nil && nonblock == nil {
-				continue
-			}
-
-			// Line must be of the form
-			//	func Open(path string, mode int, perm int) (fd int, err error)
-			// Split into name, in params, out params.
-			f := regexp.MustCompile(`^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*(?:(\w*)\.)?(\w*))?$`).FindStringSubmatch(t)
-			if f == nil {
-				fmt.Fprintf(os.Stderr, "%s:%s\nmalformed //sys declaration\n", path, t)
-				os.Exit(1)
-			}
-			funct, inps, outps, modname, sysname := f[2], f[3], f[4], f[5], f[6]
-
-			// Split argument lists on comma.
-			in := parseParamList(inps)
-			out := parseParamList(outps)
-
-			inps = strings.Join(in, ", ")
-			outps = strings.Join(out, ", ")
-
-			// Try in vain to keep people from editing this file.
-			// The theory is that they jump into the middle of the file
-			// without reading the header.
-			text += "// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n\n"
-
-			// So file name.
-			if modname == "" {
-				modname = "libc"
-			}
-
-			// System call name.
-			if sysname == "" {
-				sysname = funct
-			}
-
-			// System call pointer variable name.
-			sysvarname := fmt.Sprintf("proc%s", sysname)
-
-			strconvfunc := "BytePtrFromString"
-			strconvtype := "*byte"
-
-			sysname = strings.ToLower(sysname) // All libc functions are lowercase.
-
-			// Runtime import of function to allow cross-platform builds.
-			dynimports += fmt.Sprintf("//go:cgo_import_dynamic libc_%s %s \"%s.so\"\n", sysname, sysname, modname)
-			// Link symbol to proc address variable.
-			linknames += fmt.Sprintf("//go:linkname %s libc_%s\n", sysvarname, sysname)
-			// Library proc address variable.
-			vars = append(vars, sysvarname)
-
-			// Go function header.
-			outlist := strings.Join(out, ", ")
-			if outlist != "" {
-				outlist = fmt.Sprintf(" (%s)", outlist)
-			}
-			if text != "" {
-				text += "\n"
-			}
-			text += fmt.Sprintf("func %s(%s)%s {\n", funct, strings.Join(in, ", "), outlist)
-
-			// Check if err return available
-			errvar := ""
-			for _, param := range out {
-				p := parseParam(param)
-				if p.Type == "error" {
-					errvar = p.Name
-					continue
-				}
-			}
-
-			// Prepare arguments to Syscall.
-			var args []string
-			n := 0
-			for _, param := range in {
-				p := parseParam(param)
-				if regexp.MustCompile(`^\*`).FindStringSubmatch(p.Type) != nil {
-					args = append(args, "uintptr(unsafe.Pointer("+p.Name+"))")
-				} else if p.Type == "string" && errvar != "" {
-					text += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
-					text += fmt.Sprintf("\t_p%d, %s = %s(%s)\n", n, errvar, strconvfunc, p.Name)
-					text += fmt.Sprintf("\tif %s != nil {\n\t\treturn\n\t}\n", errvar)
-					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
-					n++
-				} else if p.Type == "string" {
-					fmt.Fprintf(os.Stderr, path+":"+funct+" uses string arguments, but has no error return\n")
-					text += fmt.Sprintf("\tvar _p%d %s\n", n, strconvtype)
-					text += fmt.Sprintf("\t_p%d, _ = %s(%s)\n", n, strconvfunc, p.Name)
-					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n))
-					n++
-				} else if s := regexp.MustCompile(`^\[\](.*)`).FindStringSubmatch(p.Type); s != nil {
-					// Convert slice into pointer, length.
-					// Have to be careful not to take address of &a[0] if len == 0:
-					// pass nil in that case.
-					text += fmt.Sprintf("\tvar _p%d *%s\n", n, s[1])
-					text += fmt.Sprintf("\tif len(%s) > 0 {\n\t\t_p%d = &%s[0]\n\t}\n", p.Name, n, p.Name)
-					args = append(args, fmt.Sprintf("uintptr(unsafe.Pointer(_p%d))", n), fmt.Sprintf("uintptr(len(%s))", p.Name))
-					n++
-				} else if p.Type == "int64" && endianness != "" {
-					if endianness == "big-endian" {
-						args = append(args, fmt.Sprintf("uintptr(%s>>32)", p.Name), fmt.Sprintf("uintptr(%s)", p.Name))
-					} else {
-						args = append(args, fmt.Sprintf("uintptr(%s)", p.Name), fmt.Sprintf("uintptr(%s>>32)", p.Name))
-					}
-				} else if p.Type == "bool" {
-					text += fmt.Sprintf("\tvar _p%d uint32\n", n)
-					text += fmt.Sprintf("\tif %s {\n\t\t_p%d = 1\n\t} else {\n\t\t_p%d = 0\n\t}\n", p.Name, n, n)
-					args = append(args, fmt.Sprintf("uintptr(_p%d)", n))
-					n++
-				} else {
-					args = append(args, fmt.Sprintf("uintptr(%s)", p.Name))
-				}
-			}
-			nargs := len(args)
-
-			// Determine which form to use; pad args with zeros.
-			asm := "sysvicall6"
-			if nonblock != nil {
-				asm = "rawSysvicall6"
-			}
-			if len(args) <= 6 {
-				for len(args) < 6 {
-					args = append(args, "0")
-				}
-			} else {
-				fmt.Fprintf(os.Stderr, "%s: too many arguments to system call\n", path)
-				os.Exit(1)
-			}
-
-			// Actual call.
-			arglist := strings.Join(args, ", ")
-			call := fmt.Sprintf("%s(uintptr(unsafe.Pointer(&%s)), %d, %s)", asm, sysvarname, nargs, arglist)
-
-			// Assign return values.
-			body := ""
-			ret := []string{"_", "_", "_"}
-			doErrno := false
-			for i := 0; i < len(out); i++ {
-				p := parseParam(out[i])
-				reg := ""
-				if p.Name == "err" {
-					reg = "e1"
-					ret[2] = reg
-					doErrno = true
-				} else {
-					reg = fmt.Sprintf("r%d", i)
-					ret[i] = reg
-				}
-				if p.Type == "bool" {
-					reg = fmt.Sprintf("%d != 0", reg)
-				}
-				if p.Type == "int64" && endianness != "" {
-					// 64-bit number in r1:r0 or r0:r1.
-					if i+2 > len(out) {
-						fmt.Fprintf(os.Stderr, "%s: not enough registers for int64 return\n", path)
-						os.Exit(1)
-					}
-					if endianness == "big-endian" {
-						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i, i+1)
-					} else {
-						reg = fmt.Sprintf("int64(r%d)<<32 | int64(r%d)", i+1, i)
-					}
-					ret[i] = fmt.Sprintf("r%d", i)
-					ret[i+1] = fmt.Sprintf("r%d", i+1)
-				}
-				if reg != "e1" {
-					body += fmt.Sprintf("\t%s = %s(%s)\n", p.Name, p.Type, reg)
-				}
-			}
-			if ret[0] == "_" && ret[1] == "_" && ret[2] == "_" {
-				text += fmt.Sprintf("\t%s\n", call)
-			} else {
-				text += fmt.Sprintf("\t%s, %s, %s := %s\n", ret[0], ret[1], ret[2], call)
-			}
-			text += body
-
-			if doErrno {
-				text += "\tif e1 != 0 {\n"
-				text += "\t\terr = e1\n"
-				text += "\t}\n"
-			}
-			text += "\treturn\n"
-			text += "}\n"
-		}
-		if err := s.Err(); err != nil {
-			fmt.Fprintf(os.Stderr, err.Error())
-			os.Exit(1)
-		}
-		file.Close()
-	}
-	imp := ""
-	if pack != "unix" {
-		imp = "import \"golang.org/x/sys/unix\"\n"
-
-	}
-	vardecls := "\t" + strings.Join(vars, ",\n\t")
-	vardecls += " syscallFunc"
-	fmt.Printf(srcTemplate, cmdLine(), buildTags(), pack, imp, dynimports, linknames, vardecls, text)
-}
-
-const srcTemplate = `// %s
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build %s
-
-package %s
-
-import (
-	"syscall"
-	"unsafe"
-)
-%s
-%s
-%s
-var (
-%s	
-)
-
-%s
-`
diff --git a/vendor/golang.org/x/sys/unix/mksysnum.go b/vendor/golang.org/x/sys/unix/mksysnum.go
deleted file mode 100644
index 07f8960f..00000000
--- a/vendor/golang.org/x/sys/unix/mksysnum.go
+++ /dev/null
@@ -1,190 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// Generate system call table for DragonFly, NetBSD,
-// FreeBSD, OpenBSD or Darwin from master list
-// (for example, /usr/src/sys/kern/syscalls.master or
-// sys/syscall.h).
-package main
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"os"
-	"regexp"
-	"strings"
-)
-
-var (
-	goos, goarch string
-)
-
-// cmdLine returns this programs's commandline arguments
-func cmdLine() string {
-	return "go run mksysnum.go " + strings.Join(os.Args[1:], " ")
-}
-
-// buildTags returns build tags
-func buildTags() string {
-	return fmt.Sprintf("%s,%s", goarch, goos)
-}
-
-func checkErr(err error) {
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "%v\n", err)
-		os.Exit(1)
-	}
-}
-
-// source string and substring slice for regexp
-type re struct {
-	str string   // source string
-	sub []string // matched sub-string
-}
-
-// Match performs regular expression match
-func (r *re) Match(exp string) bool {
-	r.sub = regexp.MustCompile(exp).FindStringSubmatch(r.str)
-	if r.sub != nil {
-		return true
-	}
-	return false
-}
-
-// fetchFile fetches a text file from URL
-func fetchFile(URL string) io.Reader {
-	resp, err := http.Get(URL)
-	checkErr(err)
-	defer resp.Body.Close()
-	body, err := ioutil.ReadAll(resp.Body)
-	checkErr(err)
-	return strings.NewReader(string(body))
-}
-
-// readFile reads a text file from path
-func readFile(path string) io.Reader {
-	file, err := os.Open(os.Args[1])
-	checkErr(err)
-	return file
-}
-
-func format(name, num, proto string) string {
-	name = strings.ToUpper(name)
-	// There are multiple entries for enosys and nosys, so comment them out.
-	nm := re{str: name}
-	if nm.Match(`^SYS_E?NOSYS$`) {
-		name = fmt.Sprintf("// %s", name)
-	}
-	if name == `SYS_SYS_EXIT` {
-		name = `SYS_EXIT`
-	}
-	return fmt.Sprintf("	%s = %s;  // %s\n", name, num, proto)
-}
-
-func main() {
-	// Get the OS (using GOOS_TARGET if it exist)
-	goos = os.Getenv("GOOS_TARGET")
-	if goos == "" {
-		goos = os.Getenv("GOOS")
-	}
-	// Get the architecture (using GOARCH_TARGET if it exists)
-	goarch = os.Getenv("GOARCH_TARGET")
-	if goarch == "" {
-		goarch = os.Getenv("GOARCH")
-	}
-	// Check if GOOS and GOARCH environment variables are defined
-	if goarch == "" || goos == "" {
-		fmt.Fprintf(os.Stderr, "GOARCH or GOOS not defined in environment\n")
-		os.Exit(1)
-	}
-
-	file := strings.TrimSpace(os.Args[1])
-	var syscalls io.Reader
-	if strings.HasPrefix(file, "https://") || strings.HasPrefix(file, "http://") {
-		// Download syscalls.master file
-		syscalls = fetchFile(file)
-	} else {
-		syscalls = readFile(file)
-	}
-
-	var text, line string
-	s := bufio.NewScanner(syscalls)
-	for s.Scan() {
-		t := re{str: line}
-		if t.Match(`^(.*)\\$`) {
-			// Handle continuation
-			line = t.sub[1]
-			line += strings.TrimLeft(s.Text(), " \t")
-		} else {
-			// New line
-			line = s.Text()
-		}
-		t = re{str: line}
-		if t.Match(`\\$`) {
-			continue
-		}
-		t = re{str: line}
-
-		switch goos {
-		case "dragonfly":
-			if t.Match(`^([0-9]+)\s+STD\s+({ \S+\s+(\w+).*)$`) {
-				num, proto := t.sub[1], t.sub[2]
-				name := fmt.Sprintf("SYS_%s", t.sub[3])
-				text += format(name, num, proto)
-			}
-		case "freebsd":
-			if t.Match(`^([0-9]+)\s+\S+\s+(?:NO)?STD\s+({ \S+\s+(\w+).*)$`) {
-				num, proto := t.sub[1], t.sub[2]
-				name := fmt.Sprintf("SYS_%s", t.sub[3])
-				text += format(name, num, proto)
-			}
-		case "openbsd":
-			if t.Match(`^([0-9]+)\s+STD\s+(NOLOCK\s+)?({ \S+\s+\*?(\w+).*)$`) {
-				num, proto, name := t.sub[1], t.sub[3], t.sub[4]
-				text += format(name, num, proto)
-			}
-		case "netbsd":
-			if t.Match(`^([0-9]+)\s+((STD)|(NOERR))\s+(RUMP\s+)?({\s+\S+\s*\*?\s*\|(\S+)\|(\S*)\|(\w+).*\s+})(\s+(\S+))?$`) {
-				num, proto, compat := t.sub[1], t.sub[6], t.sub[8]
-				name := t.sub[7] + "_" + t.sub[9]
-				if t.sub[11] != "" {
-					name = t.sub[7] + "_" + t.sub[11]
-				}
-				name = strings.ToUpper(name)
-				if compat == "" || compat == "13" || compat == "30" || compat == "50" {
-					text += fmt.Sprintf("	%s = %s;  // %s\n", name, num, proto)
-				}
-			}
-		case "darwin":
-			if t.Match(`^#define\s+SYS_(\w+)\s+([0-9]+)`) {
-				name, num := t.sub[1], t.sub[2]
-				name = strings.ToUpper(name)
-				text += fmt.Sprintf("	SYS_%s = %s;\n", name, num)
-			}
-		default:
-			fmt.Fprintf(os.Stderr, "unrecognized GOOS=%s\n", goos)
-			os.Exit(1)
-
-		}
-	}
-	err := s.Err()
-	checkErr(err)
-
-	fmt.Printf(template, cmdLine(), buildTags(), text)
-}
-
-const template = `// %s
-// Code generated by the command above; see README.md. DO NOT EDIT.
-
-// +build %s
-
-package unix
-
-const(
-%s)`
diff --git a/vendor/golang.org/x/sys/unix/types_aix.go b/vendor/golang.org/x/sys/unix/types_aix.go
deleted file mode 100644
index 25e83494..00000000
--- a/vendor/golang.org/x/sys/unix/types_aix.go
+++ /dev/null
@@ -1,236 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-// +build aix
-
-/*
-Input to cgo -godefs.  See also mkerrors.sh and mkall.sh
-*/
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package unix
-
-/*
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/limits.h>
-#include <sys/un.h>
-#include <utime.h>
-#include <sys/utsname.h>
-#include <sys/poll.h>
-#include <sys/resource.h>
-#include <sys/stat.h>
-#include <sys/statfs.h>
-#include <sys/termio.h>
-#include <sys/ioctl.h>
-
-#include <termios.h>
-
-#include <net/if.h>
-#include <net/if_dl.h>
-#include <netinet/in.h>
-#include <netinet/icmp6.h>
-
-
-#include <dirent.h>
-#include <fcntl.h>
-
-enum {
-	sizeofPtr = sizeof(void*),
-};
-
-union sockaddr_all {
-	struct sockaddr s1;     // this one gets used for fields
-	struct sockaddr_in s2;  // these pad it out
-	struct sockaddr_in6 s3;
-	struct sockaddr_un s4;
-	struct sockaddr_dl s5;
-};
-
-struct sockaddr_any {
-	struct sockaddr addr;
-	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
-};
-
-*/
-import "C"
-
-// Machine characteristics
-
-const (
-	SizeofPtr      = C.sizeofPtr
-	SizeofShort    = C.sizeof_short
-	SizeofInt      = C.sizeof_int
-	SizeofLong     = C.sizeof_long
-	SizeofLongLong = C.sizeof_longlong
-	PathMax        = C.PATH_MAX
-)
-
-// Basic types
-
-type (
-	_C_short     C.short
-	_C_int       C.int
-	_C_long      C.long
-	_C_long_long C.longlong
-)
-
-type off64 C.off64_t
-type off C.off_t
-type Mode_t C.mode_t
-
-// Time
-
-type Timespec C.struct_timespec
-
-type StTimespec C.struct_st_timespec
-
-type Timeval C.struct_timeval
-
-type Timeval32 C.struct_timeval32
-
-type Timex C.struct_timex
-
-type Time_t C.time_t
-
-type Tms C.struct_tms
-
-type Utimbuf C.struct_utimbuf
-
-type Timezone C.struct_timezone
-
-// Processes
-
-type Rusage C.struct_rusage
-
-type Rlimit C.struct_rlimit64
-
-type Pid_t C.pid_t
-
-type _Gid_t C.gid_t
-
-type dev_t C.dev_t
-
-// Files
-
-type Stat_t C.struct_stat
-
-type StatxTimestamp C.struct_statx_timestamp
-
-type Statx_t C.struct_statx
-
-type Dirent C.struct_dirent
-
-// Sockets
-
-type RawSockaddrInet4 C.struct_sockaddr_in
-
-type RawSockaddrInet6 C.struct_sockaddr_in6
-
-type RawSockaddrUnix C.struct_sockaddr_un
-
-type RawSockaddr C.struct_sockaddr
-
-type RawSockaddrAny C.struct_sockaddr_any
-
-type _Socklen C.socklen_t
-
-type Cmsghdr C.struct_cmsghdr
-
-type ICMPv6Filter C.struct_icmp6_filter
-
-type Iovec C.struct_iovec
-
-type IPMreq C.struct_ip_mreq
-
-type IPv6Mreq C.struct_ipv6_mreq
-
-type IPv6MTUInfo C.struct_ip6_mtuinfo
-
-type Linger C.struct_linger
-
-type Msghdr C.struct_msghdr
-
-const (
-	SizeofSockaddrInet4 = C.sizeof_struct_sockaddr_in
-	SizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
-	SizeofSockaddrAny   = C.sizeof_struct_sockaddr_any
-	SizeofSockaddrUnix  = C.sizeof_struct_sockaddr_un
-	SizeofLinger        = C.sizeof_struct_linger
-	SizeofIPMreq        = C.sizeof_struct_ip_mreq
-	SizeofIPv6Mreq      = C.sizeof_struct_ipv6_mreq
-	SizeofIPv6MTUInfo   = C.sizeof_struct_ip6_mtuinfo
-	SizeofMsghdr        = C.sizeof_struct_msghdr
-	SizeofCmsghdr       = C.sizeof_struct_cmsghdr
-	SizeofICMPv6Filter  = C.sizeof_struct_icmp6_filter
-)
-
-// Routing and interface messages
-
-const (
-	SizeofIfMsghdr = C.sizeof_struct_if_msghdr
-)
-
-type IfMsgHdr C.struct_if_msghdr
-
-// Misc
-
-type FdSet C.fd_set
-
-type Utsname C.struct_utsname
-
-type Ustat_t C.struct_ustat
-
-type Sigset_t C.sigset_t
-
-const (
-	AT_FDCWD            = C.AT_FDCWD
-	AT_REMOVEDIR        = C.AT_REMOVEDIR
-	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
-)
-
-// Terminal handling
-
-type Termios C.struct_termios
-
-type Termio C.struct_termio
-
-type Winsize C.struct_winsize
-
-//poll
-
-type PollFd struct {
-	Fd      int32
-	Events  uint16
-	Revents uint16
-}
-
-const (
-	POLLERR    = C.POLLERR
-	POLLHUP    = C.POLLHUP
-	POLLIN     = C.POLLIN
-	POLLNVAL   = C.POLLNVAL
-	POLLOUT    = C.POLLOUT
-	POLLPRI    = C.POLLPRI
-	POLLRDBAND = C.POLLRDBAND
-	POLLRDNORM = C.POLLRDNORM
-	POLLWRBAND = C.POLLWRBAND
-	POLLWRNORM = C.POLLWRNORM
-)
-
-//flock_t
-
-type Flock_t C.struct_flock64
-
-// Statfs
-
-type Fsid_t C.struct_fsid_t
-type Fsid64_t C.struct_fsid64_t
-
-type Statfs_t C.struct_statfs
-
-const RNDGETENTCNT = 0x80045200
diff --git a/vendor/golang.org/x/sys/unix/types_darwin.go b/vendor/golang.org/x/sys/unix/types_darwin.go
deleted file mode 100644
index 9fd2aaa6..00000000
--- a/vendor/golang.org/x/sys/unix/types_darwin.go
+++ /dev/null
@@ -1,277 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
-Input to cgo -godefs.  See README.md
-*/
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package unix
-
-/*
-#define __DARWIN_UNIX03 0
-#define KERNEL
-#define _DARWIN_USE_64_BIT_INODE
-#include <dirent.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <signal.h>
-#include <termios.h>
-#include <unistd.h>
-#include <mach/mach.h>
-#include <mach/message.h>
-#include <sys/event.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/param.h>
-#include <sys/ptrace.h>
-#include <sys/resource.h>
-#include <sys/select.h>
-#include <sys/signal.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/un.h>
-#include <sys/utsname.h>
-#include <sys/wait.h>
-#include <net/bpf.h>
-#include <net/if.h>
-#include <net/if_dl.h>
-#include <net/if_var.h>
-#include <net/route.h>
-#include <netinet/in.h>
-#include <netinet/icmp6.h>
-#include <netinet/tcp.h>
-
-enum {
-	sizeofPtr = sizeof(void*),
-};
-
-union sockaddr_all {
-	struct sockaddr s1;	// this one gets used for fields
-	struct sockaddr_in s2;	// these pad it out
-	struct sockaddr_in6 s3;
-	struct sockaddr_un s4;
-	struct sockaddr_dl s5;
-};
-
-struct sockaddr_any {
-	struct sockaddr addr;
-	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
-};
-
-*/
-import "C"
-
-// Machine characteristics
-
-const (
-	SizeofPtr      = C.sizeofPtr
-	SizeofShort    = C.sizeof_short
-	SizeofInt      = C.sizeof_int
-	SizeofLong     = C.sizeof_long
-	SizeofLongLong = C.sizeof_longlong
-)
-
-// Basic types
-
-type (
-	_C_short     C.short
-	_C_int       C.int
-	_C_long      C.long
-	_C_long_long C.longlong
-)
-
-// Time
-
-type Timespec C.struct_timespec
-
-type Timeval C.struct_timeval
-
-type Timeval32 C.struct_timeval32
-
-// Processes
-
-type Rusage C.struct_rusage
-
-type Rlimit C.struct_rlimit
-
-type _Gid_t C.gid_t
-
-// Files
-
-type Stat_t C.struct_stat64
-
-type Statfs_t C.struct_statfs64
-
-type Flock_t C.struct_flock
-
-type Fstore_t C.struct_fstore
-
-type Radvisory_t C.struct_radvisory
-
-type Fbootstraptransfer_t C.struct_fbootstraptransfer
-
-type Log2phys_t C.struct_log2phys
-
-type Fsid C.struct_fsid
-
-type Dirent C.struct_dirent
-
-// Sockets
-
-type RawSockaddrInet4 C.struct_sockaddr_in
-
-type RawSockaddrInet6 C.struct_sockaddr_in6
-
-type RawSockaddrUnix C.struct_sockaddr_un
-
-type RawSockaddrDatalink C.struct_sockaddr_dl
-
-type RawSockaddr C.struct_sockaddr
-
-type RawSockaddrAny C.struct_sockaddr_any
-
-type _Socklen C.socklen_t
-
-type Linger C.struct_linger
-
-type Iovec C.struct_iovec
-
-type IPMreq C.struct_ip_mreq
-
-type IPv6Mreq C.struct_ipv6_mreq
-
-type Msghdr C.struct_msghdr
-
-type Cmsghdr C.struct_cmsghdr
-
-type Inet4Pktinfo C.struct_in_pktinfo
-
-type Inet6Pktinfo C.struct_in6_pktinfo
-
-type IPv6MTUInfo C.struct_ip6_mtuinfo
-
-type ICMPv6Filter C.struct_icmp6_filter
-
-const (
-	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
-	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
-	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
-	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
-	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
-	SizeofLinger           = C.sizeof_struct_linger
-	SizeofIPMreq           = C.sizeof_struct_ip_mreq
-	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
-	SizeofMsghdr           = C.sizeof_struct_msghdr
-	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
-	SizeofInet4Pktinfo     = C.sizeof_struct_in_pktinfo
-	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
-	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
-	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
-)
-
-// Ptrace requests
-
-const (
-	PTRACE_TRACEME = C.PT_TRACE_ME
-	PTRACE_CONT    = C.PT_CONTINUE
-	PTRACE_KILL    = C.PT_KILL
-)
-
-// Events (kqueue, kevent)
-
-type Kevent_t C.struct_kevent
-
-// Select
-
-type FdSet C.fd_set
-
-// Routing and interface messages
-
-const (
-	SizeofIfMsghdr    = C.sizeof_struct_if_msghdr
-	SizeofIfData      = C.sizeof_struct_if_data
-	SizeofIfaMsghdr   = C.sizeof_struct_ifa_msghdr
-	SizeofIfmaMsghdr  = C.sizeof_struct_ifma_msghdr
-	SizeofIfmaMsghdr2 = C.sizeof_struct_ifma_msghdr2
-	SizeofRtMsghdr    = C.sizeof_struct_rt_msghdr
-	SizeofRtMetrics   = C.sizeof_struct_rt_metrics
-)
-
-type IfMsghdr C.struct_if_msghdr
-
-type IfData C.struct_if_data
-
-type IfaMsghdr C.struct_ifa_msghdr
-
-type IfmaMsghdr C.struct_ifma_msghdr
-
-type IfmaMsghdr2 C.struct_ifma_msghdr2
-
-type RtMsghdr C.struct_rt_msghdr
-
-type RtMetrics C.struct_rt_metrics
-
-// Berkeley packet filter
-
-const (
-	SizeofBpfVersion = C.sizeof_struct_bpf_version
-	SizeofBpfStat    = C.sizeof_struct_bpf_stat
-	SizeofBpfProgram = C.sizeof_struct_bpf_program
-	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
-	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
-)
-
-type BpfVersion C.struct_bpf_version
-
-type BpfStat C.struct_bpf_stat
-
-type BpfProgram C.struct_bpf_program
-
-type BpfInsn C.struct_bpf_insn
-
-type BpfHdr C.struct_bpf_hdr
-
-// Terminal handling
-
-type Termios C.struct_termios
-
-type Winsize C.struct_winsize
-
-// fchmodat-like syscalls.
-
-const (
-	AT_FDCWD            = C.AT_FDCWD
-	AT_REMOVEDIR        = C.AT_REMOVEDIR
-	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
-	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
-)
-
-// poll
-
-type PollFd C.struct_pollfd
-
-const (
-	POLLERR    = C.POLLERR
-	POLLHUP    = C.POLLHUP
-	POLLIN     = C.POLLIN
-	POLLNVAL   = C.POLLNVAL
-	POLLOUT    = C.POLLOUT
-	POLLPRI    = C.POLLPRI
-	POLLRDBAND = C.POLLRDBAND
-	POLLRDNORM = C.POLLRDNORM
-	POLLWRBAND = C.POLLWRBAND
-	POLLWRNORM = C.POLLWRNORM
-)
-
-// uname
-
-type Utsname C.struct_utsname
diff --git a/vendor/golang.org/x/sys/unix/types_dragonfly.go b/vendor/golang.org/x/sys/unix/types_dragonfly.go
deleted file mode 100644
index 3365dd79..00000000
--- a/vendor/golang.org/x/sys/unix/types_dragonfly.go
+++ /dev/null
@@ -1,263 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
-Input to cgo -godefs.  See README.md
-*/
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package unix
-
-/*
-#define KERNEL
-#include <dirent.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <signal.h>
-#include <termios.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/event.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/param.h>
-#include <sys/ptrace.h>
-#include <sys/resource.h>
-#include <sys/select.h>
-#include <sys/signal.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/un.h>
-#include <sys/utsname.h>
-#include <sys/wait.h>
-#include <net/bpf.h>
-#include <net/if.h>
-#include <net/if_dl.h>
-#include <net/route.h>
-#include <netinet/in.h>
-#include <netinet/icmp6.h>
-#include <netinet/tcp.h>
-
-enum {
-	sizeofPtr = sizeof(void*),
-};
-
-union sockaddr_all {
-	struct sockaddr s1;	// this one gets used for fields
-	struct sockaddr_in s2;	// these pad it out
-	struct sockaddr_in6 s3;
-	struct sockaddr_un s4;
-	struct sockaddr_dl s5;
-};
-
-struct sockaddr_any {
-	struct sockaddr addr;
-	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
-};
-
-*/
-import "C"
-
-// Machine characteristics
-
-const (
-	SizeofPtr      = C.sizeofPtr
-	SizeofShort    = C.sizeof_short
-	SizeofInt      = C.sizeof_int
-	SizeofLong     = C.sizeof_long
-	SizeofLongLong = C.sizeof_longlong
-)
-
-// Basic types
-
-type (
-	_C_short     C.short
-	_C_int       C.int
-	_C_long      C.long
-	_C_long_long C.longlong
-)
-
-// Time
-
-type Timespec C.struct_timespec
-
-type Timeval C.struct_timeval
-
-// Processes
-
-type Rusage C.struct_rusage
-
-type Rlimit C.struct_rlimit
-
-type _Gid_t C.gid_t
-
-// Files
-
-type Stat_t C.struct_stat
-
-type Statfs_t C.struct_statfs
-
-type Flock_t C.struct_flock
-
-type Dirent C.struct_dirent
-
-type Fsid C.struct_fsid
-
-// File system limits
-
-const (
-	PathMax = C.PATH_MAX
-)
-
-// Sockets
-
-type RawSockaddrInet4 C.struct_sockaddr_in
-
-type RawSockaddrInet6 C.struct_sockaddr_in6
-
-type RawSockaddrUnix C.struct_sockaddr_un
-
-type RawSockaddrDatalink C.struct_sockaddr_dl
-
-type RawSockaddr C.struct_sockaddr
-
-type RawSockaddrAny C.struct_sockaddr_any
-
-type _Socklen C.socklen_t
-
-type Linger C.struct_linger
-
-type Iovec C.struct_iovec
-
-type IPMreq C.struct_ip_mreq
-
-type IPv6Mreq C.struct_ipv6_mreq
-
-type Msghdr C.struct_msghdr
-
-type Cmsghdr C.struct_cmsghdr
-
-type Inet6Pktinfo C.struct_in6_pktinfo
-
-type IPv6MTUInfo C.struct_ip6_mtuinfo
-
-type ICMPv6Filter C.struct_icmp6_filter
-
-const (
-	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
-	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
-	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
-	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
-	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
-	SizeofLinger           = C.sizeof_struct_linger
-	SizeofIPMreq           = C.sizeof_struct_ip_mreq
-	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
-	SizeofMsghdr           = C.sizeof_struct_msghdr
-	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
-	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
-	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
-	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
-)
-
-// Ptrace requests
-
-const (
-	PTRACE_TRACEME = C.PT_TRACE_ME
-	PTRACE_CONT    = C.PT_CONTINUE
-	PTRACE_KILL    = C.PT_KILL
-)
-
-// Events (kqueue, kevent)
-
-type Kevent_t C.struct_kevent
-
-// Select
-
-type FdSet C.fd_set
-
-// Routing and interface messages
-
-const (
-	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr
-	SizeofIfData           = C.sizeof_struct_if_data
-	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
-	SizeofIfmaMsghdr       = C.sizeof_struct_ifma_msghdr
-	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
-	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
-	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
-)
-
-type IfMsghdr C.struct_if_msghdr
-
-type IfData C.struct_if_data
-
-type IfaMsghdr C.struct_ifa_msghdr
-
-type IfmaMsghdr C.struct_ifma_msghdr
-
-type IfAnnounceMsghdr C.struct_if_announcemsghdr
-
-type RtMsghdr C.struct_rt_msghdr
-
-type RtMetrics C.struct_rt_metrics
-
-// Berkeley packet filter
-
-const (
-	SizeofBpfVersion = C.sizeof_struct_bpf_version
-	SizeofBpfStat    = C.sizeof_struct_bpf_stat
-	SizeofBpfProgram = C.sizeof_struct_bpf_program
-	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
-	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
-)
-
-type BpfVersion C.struct_bpf_version
-
-type BpfStat C.struct_bpf_stat
-
-type BpfProgram C.struct_bpf_program
-
-type BpfInsn C.struct_bpf_insn
-
-type BpfHdr C.struct_bpf_hdr
-
-// Terminal handling
-
-type Termios C.struct_termios
-
-type Winsize C.struct_winsize
-
-// fchmodat-like syscalls.
-
-const (
-	AT_FDCWD            = C.AT_FDCWD
-	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
-)
-
-// poll
-
-type PollFd C.struct_pollfd
-
-const (
-	POLLERR    = C.POLLERR
-	POLLHUP    = C.POLLHUP
-	POLLIN     = C.POLLIN
-	POLLNVAL   = C.POLLNVAL
-	POLLOUT    = C.POLLOUT
-	POLLPRI    = C.POLLPRI
-	POLLRDBAND = C.POLLRDBAND
-	POLLRDNORM = C.POLLRDNORM
-	POLLWRBAND = C.POLLWRBAND
-	POLLWRNORM = C.POLLWRNORM
-)
-
-// Uname
-
-type Utsname C.struct_utsname
diff --git a/vendor/golang.org/x/sys/unix/types_freebsd.go b/vendor/golang.org/x/sys/unix/types_freebsd.go
deleted file mode 100644
index 74707989..00000000
--- a/vendor/golang.org/x/sys/unix/types_freebsd.go
+++ /dev/null
@@ -1,356 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
-Input to cgo -godefs.  See README.md
-*/
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package unix
-
-/*
-#define	_WANT_FREEBSD11_STAT	1
-#define	_WANT_FREEBSD11_STATFS	1
-#define	_WANT_FREEBSD11_DIRENT	1
-#define	_WANT_FREEBSD11_KEVENT  1
-
-#include <dirent.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <signal.h>
-#include <termios.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/capsicum.h>
-#include <sys/event.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/param.h>
-#include <sys/ptrace.h>
-#include <sys/resource.h>
-#include <sys/select.h>
-#include <sys/signal.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/un.h>
-#include <sys/utsname.h>
-#include <sys/wait.h>
-#include <net/bpf.h>
-#include <net/if.h>
-#include <net/if_dl.h>
-#include <net/route.h>
-#include <netinet/in.h>
-#include <netinet/icmp6.h>
-#include <netinet/tcp.h>
-
-enum {
-	sizeofPtr = sizeof(void*),
-};
-
-union sockaddr_all {
-	struct sockaddr s1;	// this one gets used for fields
-	struct sockaddr_in s2;	// these pad it out
-	struct sockaddr_in6 s3;
-	struct sockaddr_un s4;
-	struct sockaddr_dl s5;
-};
-
-struct sockaddr_any {
-	struct sockaddr addr;
-	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
-};
-
-// This structure is a duplicate of if_data on FreeBSD 8-STABLE.
-// See /usr/include/net/if.h.
-struct if_data8 {
-	u_char  ifi_type;
-	u_char  ifi_physical;
-	u_char  ifi_addrlen;
-	u_char  ifi_hdrlen;
-	u_char  ifi_link_state;
-	u_char  ifi_spare_char1;
-	u_char  ifi_spare_char2;
-	u_char  ifi_datalen;
-	u_long  ifi_mtu;
-	u_long  ifi_metric;
-	u_long  ifi_baudrate;
-	u_long  ifi_ipackets;
-	u_long  ifi_ierrors;
-	u_long  ifi_opackets;
-	u_long  ifi_oerrors;
-	u_long  ifi_collisions;
-	u_long  ifi_ibytes;
-	u_long  ifi_obytes;
-	u_long  ifi_imcasts;
-	u_long  ifi_omcasts;
-	u_long  ifi_iqdrops;
-	u_long  ifi_noproto;
-	u_long  ifi_hwassist;
-// FIXME: these are now unions, so maybe need to change definitions?
-#undef ifi_epoch
-	time_t  ifi_epoch;
-#undef ifi_lastchange
-	struct  timeval ifi_lastchange;
-};
-
-// This structure is a duplicate of if_msghdr on FreeBSD 8-STABLE.
-// See /usr/include/net/if.h.
-struct if_msghdr8 {
-	u_short ifm_msglen;
-	u_char  ifm_version;
-	u_char  ifm_type;
-	int     ifm_addrs;
-	int     ifm_flags;
-	u_short ifm_index;
-	struct  if_data8 ifm_data;
-};
-*/
-import "C"
-
-// Machine characteristics
-
-const (
-	SizeofPtr      = C.sizeofPtr
-	SizeofShort    = C.sizeof_short
-	SizeofInt      = C.sizeof_int
-	SizeofLong     = C.sizeof_long
-	SizeofLongLong = C.sizeof_longlong
-)
-
-// Basic types
-
-type (
-	_C_short     C.short
-	_C_int       C.int
-	_C_long      C.long
-	_C_long_long C.longlong
-)
-
-// Time
-
-type Timespec C.struct_timespec
-
-type Timeval C.struct_timeval
-
-// Processes
-
-type Rusage C.struct_rusage
-
-type Rlimit C.struct_rlimit
-
-type _Gid_t C.gid_t
-
-// Files
-
-const (
-	_statfsVersion = C.STATFS_VERSION
-	_dirblksiz     = C.DIRBLKSIZ
-)
-
-type Stat_t C.struct_stat
-
-type stat_freebsd11_t C.struct_freebsd11_stat
-
-type Statfs_t C.struct_statfs
-
-type statfs_freebsd11_t C.struct_freebsd11_statfs
-
-type Flock_t C.struct_flock
-
-type Dirent C.struct_dirent
-
-type dirent_freebsd11 C.struct_freebsd11_dirent
-
-type Fsid C.struct_fsid
-
-// File system limits
-
-const (
-	PathMax = C.PATH_MAX
-)
-
-// Advice to Fadvise
-
-const (
-	FADV_NORMAL     = C.POSIX_FADV_NORMAL
-	FADV_RANDOM     = C.POSIX_FADV_RANDOM
-	FADV_SEQUENTIAL = C.POSIX_FADV_SEQUENTIAL
-	FADV_WILLNEED   = C.POSIX_FADV_WILLNEED
-	FADV_DONTNEED   = C.POSIX_FADV_DONTNEED
-	FADV_NOREUSE    = C.POSIX_FADV_NOREUSE
-)
-
-// Sockets
-
-type RawSockaddrInet4 C.struct_sockaddr_in
-
-type RawSockaddrInet6 C.struct_sockaddr_in6
-
-type RawSockaddrUnix C.struct_sockaddr_un
-
-type RawSockaddrDatalink C.struct_sockaddr_dl
-
-type RawSockaddr C.struct_sockaddr
-
-type RawSockaddrAny C.struct_sockaddr_any
-
-type _Socklen C.socklen_t
-
-type Linger C.struct_linger
-
-type Iovec C.struct_iovec
-
-type IPMreq C.struct_ip_mreq
-
-type IPMreqn C.struct_ip_mreqn
-
-type IPv6Mreq C.struct_ipv6_mreq
-
-type Msghdr C.struct_msghdr
-
-type Cmsghdr C.struct_cmsghdr
-
-type Inet6Pktinfo C.struct_in6_pktinfo
-
-type IPv6MTUInfo C.struct_ip6_mtuinfo
-
-type ICMPv6Filter C.struct_icmp6_filter
-
-const (
-	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
-	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
-	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
-	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
-	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
-	SizeofLinger           = C.sizeof_struct_linger
-	SizeofIPMreq           = C.sizeof_struct_ip_mreq
-	SizeofIPMreqn          = C.sizeof_struct_ip_mreqn
-	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
-	SizeofMsghdr           = C.sizeof_struct_msghdr
-	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
-	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
-	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
-	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
-)
-
-// Ptrace requests
-
-const (
-	PTRACE_TRACEME = C.PT_TRACE_ME
-	PTRACE_CONT    = C.PT_CONTINUE
-	PTRACE_KILL    = C.PT_KILL
-)
-
-// Events (kqueue, kevent)
-
-type Kevent_t C.struct_kevent_freebsd11
-
-// Select
-
-type FdSet C.fd_set
-
-// Routing and interface messages
-
-const (
-	sizeofIfMsghdr         = C.sizeof_struct_if_msghdr
-	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr8
-	sizeofIfData           = C.sizeof_struct_if_data
-	SizeofIfData           = C.sizeof_struct_if_data8
-	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
-	SizeofIfmaMsghdr       = C.sizeof_struct_ifma_msghdr
-	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
-	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
-	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
-)
-
-type ifMsghdr C.struct_if_msghdr
-
-type IfMsghdr C.struct_if_msghdr8
-
-type ifData C.struct_if_data
-
-type IfData C.struct_if_data8
-
-type IfaMsghdr C.struct_ifa_msghdr
-
-type IfmaMsghdr C.struct_ifma_msghdr
-
-type IfAnnounceMsghdr C.struct_if_announcemsghdr
-
-type RtMsghdr C.struct_rt_msghdr
-
-type RtMetrics C.struct_rt_metrics
-
-// Berkeley packet filter
-
-const (
-	SizeofBpfVersion    = C.sizeof_struct_bpf_version
-	SizeofBpfStat       = C.sizeof_struct_bpf_stat
-	SizeofBpfZbuf       = C.sizeof_struct_bpf_zbuf
-	SizeofBpfProgram    = C.sizeof_struct_bpf_program
-	SizeofBpfInsn       = C.sizeof_struct_bpf_insn
-	SizeofBpfHdr        = C.sizeof_struct_bpf_hdr
-	SizeofBpfZbufHeader = C.sizeof_struct_bpf_zbuf_header
-)
-
-type BpfVersion C.struct_bpf_version
-
-type BpfStat C.struct_bpf_stat
-
-type BpfZbuf C.struct_bpf_zbuf
-
-type BpfProgram C.struct_bpf_program
-
-type BpfInsn C.struct_bpf_insn
-
-type BpfHdr C.struct_bpf_hdr
-
-type BpfZbufHeader C.struct_bpf_zbuf_header
-
-// Terminal handling
-
-type Termios C.struct_termios
-
-type Winsize C.struct_winsize
-
-// fchmodat-like syscalls.
-
-const (
-	AT_FDCWD            = C.AT_FDCWD
-	AT_REMOVEDIR        = C.AT_REMOVEDIR
-	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
-	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
-)
-
-// poll
-
-type PollFd C.struct_pollfd
-
-const (
-	POLLERR      = C.POLLERR
-	POLLHUP      = C.POLLHUP
-	POLLIN       = C.POLLIN
-	POLLINIGNEOF = C.POLLINIGNEOF
-	POLLNVAL     = C.POLLNVAL
-	POLLOUT      = C.POLLOUT
-	POLLPRI      = C.POLLPRI
-	POLLRDBAND   = C.POLLRDBAND
-	POLLRDNORM   = C.POLLRDNORM
-	POLLWRBAND   = C.POLLWRBAND
-	POLLWRNORM   = C.POLLWRNORM
-)
-
-// Capabilities
-
-type CapRights C.struct_cap_rights
-
-// Uname
-
-type Utsname C.struct_utsname
diff --git a/vendor/golang.org/x/sys/unix/types_netbsd.go b/vendor/golang.org/x/sys/unix/types_netbsd.go
deleted file mode 100644
index 2dd4f954..00000000
--- a/vendor/golang.org/x/sys/unix/types_netbsd.go
+++ /dev/null
@@ -1,289 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
-Input to cgo -godefs.  See README.md
-*/
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package unix
-
-/*
-#define KERNEL
-#include <dirent.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <signal.h>
-#include <termios.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/event.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/ptrace.h>
-#include <sys/resource.h>
-#include <sys/select.h>
-#include <sys/signal.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/sysctl.h>
-#include <sys/time.h>
-#include <sys/uio.h>
-#include <sys/un.h>
-#include <sys/utsname.h>
-#include <sys/wait.h>
-#include <net/bpf.h>
-#include <net/if.h>
-#include <net/if_dl.h>
-#include <net/route.h>
-#include <netinet/in.h>
-#include <netinet/icmp6.h>
-#include <netinet/tcp.h>
-
-enum {
-	sizeofPtr = sizeof(void*),
-};
-
-union sockaddr_all {
-	struct sockaddr s1;	// this one gets used for fields
-	struct sockaddr_in s2;	// these pad it out
-	struct sockaddr_in6 s3;
-	struct sockaddr_un s4;
-	struct sockaddr_dl s5;
-};
-
-struct sockaddr_any {
-	struct sockaddr addr;
-	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
-};
-
-*/
-import "C"
-
-// Machine characteristics
-
-const (
-	SizeofPtr      = C.sizeofPtr
-	SizeofShort    = C.sizeof_short
-	SizeofInt      = C.sizeof_int
-	SizeofLong     = C.sizeof_long
-	SizeofLongLong = C.sizeof_longlong
-)
-
-// Basic types
-
-type (
-	_C_short     C.short
-	_C_int       C.int
-	_C_long      C.long
-	_C_long_long C.longlong
-)
-
-// Time
-
-type Timespec C.struct_timespec
-
-type Timeval C.struct_timeval
-
-// Processes
-
-type Rusage C.struct_rusage
-
-type Rlimit C.struct_rlimit
-
-type _Gid_t C.gid_t
-
-// Files
-
-type Stat_t C.struct_stat
-
-type Statfs_t C.struct_statfs
-
-type Flock_t C.struct_flock
-
-type Dirent C.struct_dirent
-
-type Fsid C.fsid_t
-
-// File system limits
-
-const (
-	PathMax = C.PATH_MAX
-)
-
-// Advice to Fadvise
-
-const (
-	FADV_NORMAL     = C.POSIX_FADV_NORMAL
-	FADV_RANDOM     = C.POSIX_FADV_RANDOM
-	FADV_SEQUENTIAL = C.POSIX_FADV_SEQUENTIAL
-	FADV_WILLNEED   = C.POSIX_FADV_WILLNEED
-	FADV_DONTNEED   = C.POSIX_FADV_DONTNEED
-	FADV_NOREUSE    = C.POSIX_FADV_NOREUSE
-)
-
-// Sockets
-
-type RawSockaddrInet4 C.struct_sockaddr_in
-
-type RawSockaddrInet6 C.struct_sockaddr_in6
-
-type RawSockaddrUnix C.struct_sockaddr_un
-
-type RawSockaddrDatalink C.struct_sockaddr_dl
-
-type RawSockaddr C.struct_sockaddr
-
-type RawSockaddrAny C.struct_sockaddr_any
-
-type _Socklen C.socklen_t
-
-type Linger C.struct_linger
-
-type Iovec C.struct_iovec
-
-type IPMreq C.struct_ip_mreq
-
-type IPv6Mreq C.struct_ipv6_mreq
-
-type Msghdr C.struct_msghdr
-
-type Cmsghdr C.struct_cmsghdr
-
-type Inet6Pktinfo C.struct_in6_pktinfo
-
-type IPv6MTUInfo C.struct_ip6_mtuinfo
-
-type ICMPv6Filter C.struct_icmp6_filter
-
-const (
-	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
-	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
-	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
-	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
-	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
-	SizeofLinger           = C.sizeof_struct_linger
-	SizeofIPMreq           = C.sizeof_struct_ip_mreq
-	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
-	SizeofMsghdr           = C.sizeof_struct_msghdr
-	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
-	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
-	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
-	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
-)
-
-// Ptrace requests
-
-const (
-	PTRACE_TRACEME = C.PT_TRACE_ME
-	PTRACE_CONT    = C.PT_CONTINUE
-	PTRACE_KILL    = C.PT_KILL
-)
-
-// Events (kqueue, kevent)
-
-type Kevent_t C.struct_kevent
-
-// Select
-
-type FdSet C.fd_set
-
-// Routing and interface messages
-
-const (
-	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr
-	SizeofIfData           = C.sizeof_struct_if_data
-	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
-	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
-	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
-	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
-)
-
-type IfMsghdr C.struct_if_msghdr
-
-type IfData C.struct_if_data
-
-type IfaMsghdr C.struct_ifa_msghdr
-
-type IfAnnounceMsghdr C.struct_if_announcemsghdr
-
-type RtMsghdr C.struct_rt_msghdr
-
-type RtMetrics C.struct_rt_metrics
-
-type Mclpool C.struct_mclpool
-
-// Berkeley packet filter
-
-const (
-	SizeofBpfVersion = C.sizeof_struct_bpf_version
-	SizeofBpfStat    = C.sizeof_struct_bpf_stat
-	SizeofBpfProgram = C.sizeof_struct_bpf_program
-	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
-	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
-)
-
-type BpfVersion C.struct_bpf_version
-
-type BpfStat C.struct_bpf_stat
-
-type BpfProgram C.struct_bpf_program
-
-type BpfInsn C.struct_bpf_insn
-
-type BpfHdr C.struct_bpf_hdr
-
-type BpfTimeval C.struct_bpf_timeval
-
-// Terminal handling
-
-type Termios C.struct_termios
-
-type Winsize C.struct_winsize
-
-type Ptmget C.struct_ptmget
-
-// fchmodat-like syscalls.
-
-const (
-	AT_FDCWD            = C.AT_FDCWD
-	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
-)
-
-// poll
-
-type PollFd C.struct_pollfd
-
-const (
-	POLLERR    = C.POLLERR
-	POLLHUP    = C.POLLHUP
-	POLLIN     = C.POLLIN
-	POLLNVAL   = C.POLLNVAL
-	POLLOUT    = C.POLLOUT
-	POLLPRI    = C.POLLPRI
-	POLLRDBAND = C.POLLRDBAND
-	POLLRDNORM = C.POLLRDNORM
-	POLLWRBAND = C.POLLWRBAND
-	POLLWRNORM = C.POLLWRNORM
-)
-
-// Sysctl
-
-type Sysctlnode C.struct_sysctlnode
-
-// Uname
-
-type Utsname C.struct_utsname
-
-// Clockinfo
-
-const SizeofClockinfo = C.sizeof_struct_clockinfo
-
-type Clockinfo C.struct_clockinfo
diff --git a/vendor/golang.org/x/sys/unix/types_openbsd.go b/vendor/golang.org/x/sys/unix/types_openbsd.go
deleted file mode 100644
index 4e5e57f9..00000000
--- a/vendor/golang.org/x/sys/unix/types_openbsd.go
+++ /dev/null
@@ -1,276 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
-Input to cgo -godefs.  See README.md
-*/
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package unix
-
-/*
-#define KERNEL
-#include <dirent.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <signal.h>
-#include <termios.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/event.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/ptrace.h>
-#include <sys/resource.h>
-#include <sys/select.h>
-#include <sys/signal.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/uio.h>
-#include <sys/un.h>
-#include <sys/utsname.h>
-#include <sys/wait.h>
-#include <uvm/uvmexp.h>
-#include <net/bpf.h>
-#include <net/if.h>
-#include <net/if_dl.h>
-#include <net/route.h>
-#include <netinet/in.h>
-#include <netinet/icmp6.h>
-#include <netinet/tcp.h>
-
-enum {
-	sizeofPtr = sizeof(void*),
-};
-
-union sockaddr_all {
-	struct sockaddr s1;	// this one gets used for fields
-	struct sockaddr_in s2;	// these pad it out
-	struct sockaddr_in6 s3;
-	struct sockaddr_un s4;
-	struct sockaddr_dl s5;
-};
-
-struct sockaddr_any {
-	struct sockaddr addr;
-	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
-};
-
-*/
-import "C"
-
-// Machine characteristics
-
-const (
-	SizeofPtr      = C.sizeofPtr
-	SizeofShort    = C.sizeof_short
-	SizeofInt      = C.sizeof_int
-	SizeofLong     = C.sizeof_long
-	SizeofLongLong = C.sizeof_longlong
-)
-
-// Basic types
-
-type (
-	_C_short     C.short
-	_C_int       C.int
-	_C_long      C.long
-	_C_long_long C.longlong
-)
-
-// Time
-
-type Timespec C.struct_timespec
-
-type Timeval C.struct_timeval
-
-// Processes
-
-type Rusage C.struct_rusage
-
-type Rlimit C.struct_rlimit
-
-type _Gid_t C.gid_t
-
-// Files
-
-type Stat_t C.struct_stat
-
-type Statfs_t C.struct_statfs
-
-type Flock_t C.struct_flock
-
-type Dirent C.struct_dirent
-
-type Fsid C.fsid_t
-
-// File system limits
-
-const (
-	PathMax = C.PATH_MAX
-)
-
-// Sockets
-
-type RawSockaddrInet4 C.struct_sockaddr_in
-
-type RawSockaddrInet6 C.struct_sockaddr_in6
-
-type RawSockaddrUnix C.struct_sockaddr_un
-
-type RawSockaddrDatalink C.struct_sockaddr_dl
-
-type RawSockaddr C.struct_sockaddr
-
-type RawSockaddrAny C.struct_sockaddr_any
-
-type _Socklen C.socklen_t
-
-type Linger C.struct_linger
-
-type Iovec C.struct_iovec
-
-type IPMreq C.struct_ip_mreq
-
-type IPv6Mreq C.struct_ipv6_mreq
-
-type Msghdr C.struct_msghdr
-
-type Cmsghdr C.struct_cmsghdr
-
-type Inet6Pktinfo C.struct_in6_pktinfo
-
-type IPv6MTUInfo C.struct_ip6_mtuinfo
-
-type ICMPv6Filter C.struct_icmp6_filter
-
-const (
-	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
-	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
-	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
-	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
-	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
-	SizeofLinger           = C.sizeof_struct_linger
-	SizeofIPMreq           = C.sizeof_struct_ip_mreq
-	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
-	SizeofMsghdr           = C.sizeof_struct_msghdr
-	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
-	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
-	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
-	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
-)
-
-// Ptrace requests
-
-const (
-	PTRACE_TRACEME = C.PT_TRACE_ME
-	PTRACE_CONT    = C.PT_CONTINUE
-	PTRACE_KILL    = C.PT_KILL
-)
-
-// Events (kqueue, kevent)
-
-type Kevent_t C.struct_kevent
-
-// Select
-
-type FdSet C.fd_set
-
-// Routing and interface messages
-
-const (
-	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr
-	SizeofIfData           = C.sizeof_struct_if_data
-	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
-	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
-	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
-	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
-)
-
-type IfMsghdr C.struct_if_msghdr
-
-type IfData C.struct_if_data
-
-type IfaMsghdr C.struct_ifa_msghdr
-
-type IfAnnounceMsghdr C.struct_if_announcemsghdr
-
-type RtMsghdr C.struct_rt_msghdr
-
-type RtMetrics C.struct_rt_metrics
-
-type Mclpool C.struct_mclpool
-
-// Berkeley packet filter
-
-const (
-	SizeofBpfVersion = C.sizeof_struct_bpf_version
-	SizeofBpfStat    = C.sizeof_struct_bpf_stat
-	SizeofBpfProgram = C.sizeof_struct_bpf_program
-	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
-	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
-)
-
-type BpfVersion C.struct_bpf_version
-
-type BpfStat C.struct_bpf_stat
-
-type BpfProgram C.struct_bpf_program
-
-type BpfInsn C.struct_bpf_insn
-
-type BpfHdr C.struct_bpf_hdr
-
-type BpfTimeval C.struct_bpf_timeval
-
-// Terminal handling
-
-type Termios C.struct_termios
-
-type Winsize C.struct_winsize
-
-// fchmodat-like syscalls.
-
-const (
-	AT_FDCWD            = C.AT_FDCWD
-	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
-)
-
-// poll
-
-type PollFd C.struct_pollfd
-
-const (
-	POLLERR    = C.POLLERR
-	POLLHUP    = C.POLLHUP
-	POLLIN     = C.POLLIN
-	POLLNVAL   = C.POLLNVAL
-	POLLOUT    = C.POLLOUT
-	POLLPRI    = C.POLLPRI
-	POLLRDBAND = C.POLLRDBAND
-	POLLRDNORM = C.POLLRDNORM
-	POLLWRBAND = C.POLLWRBAND
-	POLLWRNORM = C.POLLWRNORM
-)
-
-// Signal Sets
-
-type Sigset_t C.sigset_t
-
-// Uname
-
-type Utsname C.struct_utsname
-
-// Uvmexp
-
-const SizeofUvmexp = C.sizeof_struct_uvmexp
-
-type Uvmexp C.struct_uvmexp
diff --git a/vendor/golang.org/x/sys/unix/types_solaris.go b/vendor/golang.org/x/sys/unix/types_solaris.go
deleted file mode 100644
index 2b716f93..00000000
--- a/vendor/golang.org/x/sys/unix/types_solaris.go
+++ /dev/null
@@ -1,266 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-/*
-Input to cgo -godefs.  See README.md
-*/
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package unix
-
-/*
-#define KERNEL
-// These defines ensure that builds done on newer versions of Solaris are
-// backwards-compatible with older versions of Solaris and
-// OpenSolaris-based derivatives.
-#define __USE_SUNOS_SOCKETS__          // msghdr
-#define __USE_LEGACY_PROTOTYPES__      // iovec
-#include <dirent.h>
-#include <fcntl.h>
-#include <netdb.h>
-#include <limits.h>
-#include <poll.h>
-#include <signal.h>
-#include <termios.h>
-#include <termio.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/param.h>
-#include <sys/resource.h>
-#include <sys/select.h>
-#include <sys/signal.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/statvfs.h>
-#include <sys/time.h>
-#include <sys/times.h>
-#include <sys/types.h>
-#include <sys/utsname.h>
-#include <sys/un.h>
-#include <sys/wait.h>
-#include <net/bpf.h>
-#include <net/if.h>
-#include <net/if_dl.h>
-#include <net/route.h>
-#include <netinet/in.h>
-#include <netinet/icmp6.h>
-#include <netinet/tcp.h>
-#include <ustat.h>
-#include <utime.h>
-
-enum {
-	sizeofPtr = sizeof(void*),
-};
-
-union sockaddr_all {
-	struct sockaddr s1;	// this one gets used for fields
-	struct sockaddr_in s2;	// these pad it out
-	struct sockaddr_in6 s3;
-	struct sockaddr_un s4;
-	struct sockaddr_dl s5;
-};
-
-struct sockaddr_any {
-	struct sockaddr addr;
-	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
-};
-
-*/
-import "C"
-
-// Machine characteristics
-
-const (
-	SizeofPtr      = C.sizeofPtr
-	SizeofShort    = C.sizeof_short
-	SizeofInt      = C.sizeof_int
-	SizeofLong     = C.sizeof_long
-	SizeofLongLong = C.sizeof_longlong
-	PathMax        = C.PATH_MAX
-	MaxHostNameLen = C.MAXHOSTNAMELEN
-)
-
-// Basic types
-
-type (
-	_C_short     C.short
-	_C_int       C.int
-	_C_long      C.long
-	_C_long_long C.longlong
-)
-
-// Time
-
-type Timespec C.struct_timespec
-
-type Timeval C.struct_timeval
-
-type Timeval32 C.struct_timeval32
-
-type Tms C.struct_tms
-
-type Utimbuf C.struct_utimbuf
-
-// Processes
-
-type Rusage C.struct_rusage
-
-type Rlimit C.struct_rlimit
-
-type _Gid_t C.gid_t
-
-// Files
-
-type Stat_t C.struct_stat
-
-type Flock_t C.struct_flock
-
-type Dirent C.struct_dirent
-
-// Filesystems
-
-type _Fsblkcnt_t C.fsblkcnt_t
-
-type Statvfs_t C.struct_statvfs
-
-// Sockets
-
-type RawSockaddrInet4 C.struct_sockaddr_in
-
-type RawSockaddrInet6 C.struct_sockaddr_in6
-
-type RawSockaddrUnix C.struct_sockaddr_un
-
-type RawSockaddrDatalink C.struct_sockaddr_dl
-
-type RawSockaddr C.struct_sockaddr
-
-type RawSockaddrAny C.struct_sockaddr_any
-
-type _Socklen C.socklen_t
-
-type Linger C.struct_linger
-
-type Iovec C.struct_iovec
-
-type IPMreq C.struct_ip_mreq
-
-type IPv6Mreq C.struct_ipv6_mreq
-
-type Msghdr C.struct_msghdr
-
-type Cmsghdr C.struct_cmsghdr
-
-type Inet6Pktinfo C.struct_in6_pktinfo
-
-type IPv6MTUInfo C.struct_ip6_mtuinfo
-
-type ICMPv6Filter C.struct_icmp6_filter
-
-const (
-	SizeofSockaddrInet4    = C.sizeof_struct_sockaddr_in
-	SizeofSockaddrInet6    = C.sizeof_struct_sockaddr_in6
-	SizeofSockaddrAny      = C.sizeof_struct_sockaddr_any
-	SizeofSockaddrUnix     = C.sizeof_struct_sockaddr_un
-	SizeofSockaddrDatalink = C.sizeof_struct_sockaddr_dl
-	SizeofLinger           = C.sizeof_struct_linger
-	SizeofIPMreq           = C.sizeof_struct_ip_mreq
-	SizeofIPv6Mreq         = C.sizeof_struct_ipv6_mreq
-	SizeofMsghdr           = C.sizeof_struct_msghdr
-	SizeofCmsghdr          = C.sizeof_struct_cmsghdr
-	SizeofInet6Pktinfo     = C.sizeof_struct_in6_pktinfo
-	SizeofIPv6MTUInfo      = C.sizeof_struct_ip6_mtuinfo
-	SizeofICMPv6Filter     = C.sizeof_struct_icmp6_filter
-)
-
-// Select
-
-type FdSet C.fd_set
-
-// Misc
-
-type Utsname C.struct_utsname
-
-type Ustat_t C.struct_ustat
-
-const (
-	AT_FDCWD            = C.AT_FDCWD
-	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
-	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
-	AT_REMOVEDIR        = C.AT_REMOVEDIR
-	AT_EACCESS          = C.AT_EACCESS
-)
-
-// Routing and interface messages
-
-const (
-	SizeofIfMsghdr  = C.sizeof_struct_if_msghdr
-	SizeofIfData    = C.sizeof_struct_if_data
-	SizeofIfaMsghdr = C.sizeof_struct_ifa_msghdr
-	SizeofRtMsghdr  = C.sizeof_struct_rt_msghdr
-	SizeofRtMetrics = C.sizeof_struct_rt_metrics
-)
-
-type IfMsghdr C.struct_if_msghdr
-
-type IfData C.struct_if_data
-
-type IfaMsghdr C.struct_ifa_msghdr
-
-type RtMsghdr C.struct_rt_msghdr
-
-type RtMetrics C.struct_rt_metrics
-
-// Berkeley packet filter
-
-const (
-	SizeofBpfVersion = C.sizeof_struct_bpf_version
-	SizeofBpfStat    = C.sizeof_struct_bpf_stat
-	SizeofBpfProgram = C.sizeof_struct_bpf_program
-	SizeofBpfInsn    = C.sizeof_struct_bpf_insn
-	SizeofBpfHdr     = C.sizeof_struct_bpf_hdr
-)
-
-type BpfVersion C.struct_bpf_version
-
-type BpfStat C.struct_bpf_stat
-
-type BpfProgram C.struct_bpf_program
-
-type BpfInsn C.struct_bpf_insn
-
-type BpfTimeval C.struct_bpf_timeval
-
-type BpfHdr C.struct_bpf_hdr
-
-// Terminal handling
-
-type Termios C.struct_termios
-
-type Termio C.struct_termio
-
-type Winsize C.struct_winsize
-
-// poll
-
-type PollFd C.struct_pollfd
-
-const (
-	POLLERR    = C.POLLERR
-	POLLHUP    = C.POLLHUP
-	POLLIN     = C.POLLIN
-	POLLNVAL   = C.POLLNVAL
-	POLLOUT    = C.POLLOUT
-	POLLPRI    = C.POLLPRI
-	POLLRDBAND = C.POLLRDBAND
-	POLLRDNORM = C.POLLRDNORM
-	POLLWRBAND = C.POLLWRBAND
-	POLLWRNORM = C.POLLWRNORM
-)
diff --git a/vendor/golang.org/x/text/encoding/internal/identifier/gen.go b/vendor/golang.org/x/text/encoding/internal/identifier/gen.go
deleted file mode 100644
index 0c8eba7e..00000000
--- a/vendor/golang.org/x/text/encoding/internal/identifier/gen.go
+++ /dev/null
@@ -1,137 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-package main
-
-import (
-	"bytes"
-	"encoding/xml"
-	"fmt"
-	"io"
-	"log"
-	"strings"
-
-	"golang.org/x/text/internal/gen"
-)
-
-type registry struct {
-	XMLName  xml.Name `xml:"registry"`
-	Updated  string   `xml:"updated"`
-	Registry []struct {
-		ID     string `xml:"id,attr"`
-		Record []struct {
-			Name string `xml:"name"`
-			Xref []struct {
-				Type string `xml:"type,attr"`
-				Data string `xml:"data,attr"`
-			} `xml:"xref"`
-			Desc struct {
-				Data string `xml:",innerxml"`
-				// Any []struct {
-				// 	Data string `xml:",chardata"`
-				// } `xml:",any"`
-				// Data string `xml:",chardata"`
-			} `xml:"description,"`
-			MIB   string   `xml:"value"`
-			Alias []string `xml:"alias"`
-			MIME  string   `xml:"preferred_alias"`
-		} `xml:"record"`
-	} `xml:"registry"`
-}
-
-func main() {
-	r := gen.OpenIANAFile("assignments/character-sets/character-sets.xml")
-	reg := &registry{}
-	if err := xml.NewDecoder(r).Decode(&reg); err != nil && err != io.EOF {
-		log.Fatalf("Error decoding charset registry: %v", err)
-	}
-	if len(reg.Registry) == 0 || reg.Registry[0].ID != "character-sets-1" {
-		log.Fatalf("Unexpected ID %s", reg.Registry[0].ID)
-	}
-
-	w := &bytes.Buffer{}
-	fmt.Fprintf(w, "const (\n")
-	for _, rec := range reg.Registry[0].Record {
-		constName := ""
-		for _, a := range rec.Alias {
-			if strings.HasPrefix(a, "cs") && strings.IndexByte(a, '-') == -1 {
-				// Some of the constant definitions have comments in them. Strip those.
-				constName = strings.Title(strings.SplitN(a[2:], "\n", 2)[0])
-			}
-		}
-		if constName == "" {
-			switch rec.MIB {
-			case "2085":
-				constName = "HZGB2312" // Not listed as alias for some reason.
-			default:
-				log.Fatalf("No cs alias defined for %s.", rec.MIB)
-			}
-		}
-		if rec.MIME != "" {
-			rec.MIME = fmt.Sprintf(" (MIME: %s)", rec.MIME)
-		}
-		fmt.Fprintf(w, "// %s is the MIB identifier with IANA name %s%s.\n//\n", constName, rec.Name, rec.MIME)
-		if len(rec.Desc.Data) > 0 {
-			fmt.Fprint(w, "// ")
-			d := xml.NewDecoder(strings.NewReader(rec.Desc.Data))
-			inElem := true
-			attr := ""
-			for {
-				t, err := d.Token()
-				if err != nil {
-					if err != io.EOF {
-						log.Fatal(err)
-					}
-					break
-				}
-				switch x := t.(type) {
-				case xml.CharData:
-					attr = "" // Don't need attribute info.
-					a := bytes.Split([]byte(x), []byte("\n"))
-					for i, b := range a {
-						if b = bytes.TrimSpace(b); len(b) != 0 {
-							if !inElem && i > 0 {
-								fmt.Fprint(w, "\n// ")
-							}
-							inElem = false
-							fmt.Fprintf(w, "%s ", string(b))
-						}
-					}
-				case xml.StartElement:
-					if x.Name.Local == "xref" {
-						inElem = true
-						use := false
-						for _, a := range x.Attr {
-							if a.Name.Local == "type" {
-								use = use || a.Value != "person"
-							}
-							if a.Name.Local == "data" && use {
-								attr = a.Value + " "
-							}
-						}
-					}
-				case xml.EndElement:
-					inElem = false
-					fmt.Fprint(w, attr)
-				}
-			}
-			fmt.Fprint(w, "\n")
-		}
-		for _, x := range rec.Xref {
-			switch x.Type {
-			case "rfc":
-				fmt.Fprintf(w, "// Reference: %s\n", strings.ToUpper(x.Data))
-			case "uri":
-				fmt.Fprintf(w, "// Reference: %s\n", x.Data)
-			}
-		}
-		fmt.Fprintf(w, "%s MIB = %s\n", constName, rec.MIB)
-		fmt.Fprintln(w)
-	}
-	fmt.Fprintln(w, ")")
-
-	gen.WriteGoFile("mib.go", "identifier", w.Bytes())
-}
diff --git a/vendor/golang.org/x/text/unicode/bidi/gen.go b/vendor/golang.org/x/text/unicode/bidi/gen.go
deleted file mode 100644
index 4e1c7ba0..00000000
--- a/vendor/golang.org/x/text/unicode/bidi/gen.go
+++ /dev/null
@@ -1,133 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-package main
-
-import (
-	"flag"
-	"log"
-
-	"golang.org/x/text/internal/gen"
-	"golang.org/x/text/internal/triegen"
-	"golang.org/x/text/internal/ucd"
-)
-
-var outputFile = flag.String("out", "tables.go", "output file")
-
-func main() {
-	gen.Init()
-	gen.Repackage("gen_trieval.go", "trieval.go", "bidi")
-	gen.Repackage("gen_ranges.go", "ranges_test.go", "bidi")
-
-	genTables()
-}
-
-// bidiClass names and codes taken from class "bc" in
-// http://www.unicode.org/Public/8.0.0/ucd/PropertyValueAliases.txt
-var bidiClass = map[string]Class{
-	"AL":  AL,  // ArabicLetter
-	"AN":  AN,  // ArabicNumber
-	"B":   B,   // ParagraphSeparator
-	"BN":  BN,  // BoundaryNeutral
-	"CS":  CS,  // CommonSeparator
-	"EN":  EN,  // EuropeanNumber
-	"ES":  ES,  // EuropeanSeparator
-	"ET":  ET,  // EuropeanTerminator
-	"L":   L,   // LeftToRight
-	"NSM": NSM, // NonspacingMark
-	"ON":  ON,  // OtherNeutral
-	"R":   R,   // RightToLeft
-	"S":   S,   // SegmentSeparator
-	"WS":  WS,  // WhiteSpace
-
-	"FSI": Control,
-	"PDF": Control,
-	"PDI": Control,
-	"LRE": Control,
-	"LRI": Control,
-	"LRO": Control,
-	"RLE": Control,
-	"RLI": Control,
-	"RLO": Control,
-}
-
-func genTables() {
-	if numClass > 0x0F {
-		log.Fatalf("Too many Class constants (%#x > 0x0F).", numClass)
-	}
-	w := gen.NewCodeWriter()
-	defer w.WriteVersionedGoFile(*outputFile, "bidi")
-
-	gen.WriteUnicodeVersion(w)
-
-	t := triegen.NewTrie("bidi")
-
-	// Build data about bracket mapping. These bits need to be or-ed with
-	// any other bits.
-	orMask := map[rune]uint64{}
-
-	xorMap := map[rune]int{}
-	xorMasks := []rune{0} // First value is no-op.
-
-	ucd.Parse(gen.OpenUCDFile("BidiBrackets.txt"), func(p *ucd.Parser) {
-		r1 := p.Rune(0)
-		r2 := p.Rune(1)
-		xor := r1 ^ r2
-		if _, ok := xorMap[xor]; !ok {
-			xorMap[xor] = len(xorMasks)
-			xorMasks = append(xorMasks, xor)
-		}
-		entry := uint64(xorMap[xor]) << xorMaskShift
-		switch p.String(2) {
-		case "o":
-			entry |= openMask
-		case "c", "n":
-		default:
-			log.Fatalf("Unknown bracket class %q.", p.String(2))
-		}
-		orMask[r1] = entry
-	})
-
-	w.WriteComment(`
-	xorMasks contains masks to be xor-ed with brackets to get the reverse
-	version.`)
-	w.WriteVar("xorMasks", xorMasks)
-
-	done := map[rune]bool{}
-
-	insert := func(r rune, c Class) {
-		if !done[r] {
-			t.Insert(r, orMask[r]|uint64(c))
-			done[r] = true
-		}
-	}
-
-	// Insert the derived BiDi properties.
-	ucd.Parse(gen.OpenUCDFile("extracted/DerivedBidiClass.txt"), func(p *ucd.Parser) {
-		r := p.Rune(0)
-		class, ok := bidiClass[p.String(1)]
-		if !ok {
-			log.Fatalf("%U: Unknown BiDi class %q", r, p.String(1))
-		}
-		insert(r, class)
-	})
-	visitDefaults(insert)
-
-	// TODO: use sparse blocks. This would reduce table size considerably
-	// from the looks of it.
-
-	sz, err := t.Gen(w)
-	if err != nil {
-		log.Fatal(err)
-	}
-	w.Size += sz
-}
-
-// dummy values to make methods in gen_common compile. The real versions
-// will be generated by this file to tables.go.
-var (
-	xorMasks []rune
-)
diff --git a/vendor/golang.org/x/text/unicode/bidi/gen_ranges.go b/vendor/golang.org/x/text/unicode/bidi/gen_ranges.go
deleted file mode 100644
index 51bd68fa..00000000
--- a/vendor/golang.org/x/text/unicode/bidi/gen_ranges.go
+++ /dev/null
@@ -1,57 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-package main
-
-import (
-	"unicode"
-
-	"golang.org/x/text/internal/gen"
-	"golang.org/x/text/internal/ucd"
-	"golang.org/x/text/unicode/rangetable"
-)
-
-// These tables are hand-extracted from:
-// http://www.unicode.org/Public/8.0.0/ucd/extracted/DerivedBidiClass.txt
-func visitDefaults(fn func(r rune, c Class)) {
-	// first write default values for ranges listed above.
-	visitRunes(fn, AL, []rune{
-		0x0600, 0x07BF, // Arabic
-		0x08A0, 0x08FF, // Arabic Extended-A
-		0xFB50, 0xFDCF, // Arabic Presentation Forms
-		0xFDF0, 0xFDFF,
-		0xFE70, 0xFEFF,
-		0x0001EE00, 0x0001EEFF, // Arabic Mathematical Alpha Symbols
-	})
-	visitRunes(fn, R, []rune{
-		0x0590, 0x05FF, // Hebrew
-		0x07C0, 0x089F, // Nko et al.
-		0xFB1D, 0xFB4F,
-		0x00010800, 0x00010FFF, // Cypriot Syllabary et. al.
-		0x0001E800, 0x0001EDFF,
-		0x0001EF00, 0x0001EFFF,
-	})
-	visitRunes(fn, ET, []rune{ // European Terminator
-		0x20A0, 0x20Cf, // Currency symbols
-	})
-	rangetable.Visit(unicode.Noncharacter_Code_Point, func(r rune) {
-		fn(r, BN) // Boundary Neutral
-	})
-	ucd.Parse(gen.OpenUCDFile("DerivedCoreProperties.txt"), func(p *ucd.Parser) {
-		if p.String(1) == "Default_Ignorable_Code_Point" {
-			fn(p.Rune(0), BN) // Boundary Neutral
-		}
-	})
-}
-
-func visitRunes(fn func(r rune, c Class), c Class, runes []rune) {
-	for i := 0; i < len(runes); i += 2 {
-		lo, hi := runes[i], runes[i+1]
-		for j := lo; j <= hi; j++ {
-			fn(j, c)
-		}
-	}
-}
diff --git a/vendor/golang.org/x/text/unicode/bidi/gen_trieval.go b/vendor/golang.org/x/text/unicode/bidi/gen_trieval.go
deleted file mode 100644
index 9cb99428..00000000
--- a/vendor/golang.org/x/text/unicode/bidi/gen_trieval.go
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-package main
-
-// Class is the Unicode BiDi class. Each rune has a single class.
-type Class uint
-
-const (
-	L       Class = iota // LeftToRight
-	R                    // RightToLeft
-	EN                   // EuropeanNumber
-	ES                   // EuropeanSeparator
-	ET                   // EuropeanTerminator
-	AN                   // ArabicNumber
-	CS                   // CommonSeparator
-	B                    // ParagraphSeparator
-	S                    // SegmentSeparator
-	WS                   // WhiteSpace
-	ON                   // OtherNeutral
-	BN                   // BoundaryNeutral
-	NSM                  // NonspacingMark
-	AL                   // ArabicLetter
-	Control              // Control LRO - PDI
-
-	numClass
-
-	LRO // LeftToRightOverride
-	RLO // RightToLeftOverride
-	LRE // LeftToRightEmbedding
-	RLE // RightToLeftEmbedding
-	PDF // PopDirectionalFormat
-	LRI // LeftToRightIsolate
-	RLI // RightToLeftIsolate
-	FSI // FirstStrongIsolate
-	PDI // PopDirectionalIsolate
-
-	unknownClass = ^Class(0)
-)
-
-var controlToClass = map[rune]Class{
-	0x202D: LRO, // LeftToRightOverride,
-	0x202E: RLO, // RightToLeftOverride,
-	0x202A: LRE, // LeftToRightEmbedding,
-	0x202B: RLE, // RightToLeftEmbedding,
-	0x202C: PDF, // PopDirectionalFormat,
-	0x2066: LRI, // LeftToRightIsolate,
-	0x2067: RLI, // RightToLeftIsolate,
-	0x2068: FSI, // FirstStrongIsolate,
-	0x2069: PDI, // PopDirectionalIsolate,
-}
-
-// A trie entry has the following bits:
-// 7..5  XOR mask for brackets
-// 4     1: Bracket open, 0: Bracket close
-// 3..0  Class type
-
-const (
-	openMask     = 0x10
-	xorMaskShift = 5
-)
diff --git a/vendor/golang.org/x/text/unicode/norm/maketables.go b/vendor/golang.org/x/text/unicode/norm/maketables.go
deleted file mode 100644
index 338c395e..00000000
--- a/vendor/golang.org/x/text/unicode/norm/maketables.go
+++ /dev/null
@@ -1,976 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// Normalization table generator.
-// Data read from the web.
-// See forminfo.go for a description of the trie values associated with each rune.
-
-package main
-
-import (
-	"bytes"
-	"flag"
-	"fmt"
-	"io"
-	"log"
-	"sort"
-	"strconv"
-	"strings"
-
-	"golang.org/x/text/internal/gen"
-	"golang.org/x/text/internal/triegen"
-	"golang.org/x/text/internal/ucd"
-)
-
-func main() {
-	gen.Init()
-	loadUnicodeData()
-	compactCCC()
-	loadCompositionExclusions()
-	completeCharFields(FCanonical)
-	completeCharFields(FCompatibility)
-	computeNonStarterCounts()
-	verifyComputed()
-	printChars()
-	testDerived()
-	printTestdata()
-	makeTables()
-}
-
-var (
-	tablelist = flag.String("tables",
-		"all",
-		"comma-separated list of which tables to generate; "+
-			"can be 'decomp', 'recomp', 'info' and 'all'")
-	test = flag.Bool("test",
-		false,
-		"test existing tables against DerivedNormalizationProps and generate test data for regression testing")
-	verbose = flag.Bool("verbose",
-		false,
-		"write data to stdout as it is parsed")
-)
-
-const MaxChar = 0x10FFFF // anything above this shouldn't exist
-
-// Quick Check properties of runes allow us to quickly
-// determine whether a rune may occur in a normal form.
-// For a given normal form, a rune may be guaranteed to occur
-// verbatim (QC=Yes), may or may not combine with another
-// rune (QC=Maybe), or may not occur (QC=No).
-type QCResult int
-
-const (
-	QCUnknown QCResult = iota
-	QCYes
-	QCNo
-	QCMaybe
-)
-
-func (r QCResult) String() string {
-	switch r {
-	case QCYes:
-		return "Yes"
-	case QCNo:
-		return "No"
-	case QCMaybe:
-		return "Maybe"
-	}
-	return "***UNKNOWN***"
-}
-
-const (
-	FCanonical     = iota // NFC or NFD
-	FCompatibility        // NFKC or NFKD
-	FNumberOfFormTypes
-)
-
-const (
-	MComposed   = iota // NFC or NFKC
-	MDecomposed        // NFD or NFKD
-	MNumberOfModes
-)
-
-// This contains only the properties we're interested in.
-type Char struct {
-	name          string
-	codePoint     rune  // if zero, this index is not a valid code point.
-	ccc           uint8 // canonical combining class
-	origCCC       uint8
-	excludeInComp bool // from CompositionExclusions.txt
-	compatDecomp  bool // it has a compatibility expansion
-
-	nTrailingNonStarters uint8
-	nLeadingNonStarters  uint8 // must be equal to trailing if non-zero
-
-	forms [FNumberOfFormTypes]FormInfo // For FCanonical and FCompatibility
-
-	state State
-}
-
-var chars = make([]Char, MaxChar+1)
-var cccMap = make(map[uint8]uint8)
-
-func (c Char) String() string {
-	buf := new(bytes.Buffer)
-
-	fmt.Fprintf(buf, "%U [%s]:\n", c.codePoint, c.name)
-	fmt.Fprintf(buf, "  ccc: %v\n", c.ccc)
-	fmt.Fprintf(buf, "  excludeInComp: %v\n", c.excludeInComp)
-	fmt.Fprintf(buf, "  compatDecomp: %v\n", c.compatDecomp)
-	fmt.Fprintf(buf, "  state: %v\n", c.state)
-	fmt.Fprintf(buf, "  NFC:\n")
-	fmt.Fprint(buf, c.forms[FCanonical])
-	fmt.Fprintf(buf, "  NFKC:\n")
-	fmt.Fprint(buf, c.forms[FCompatibility])
-
-	return buf.String()
-}
-
-// In UnicodeData.txt, some ranges are marked like this:
-//	3400;<CJK Ideograph Extension A, First>;Lo;0;L;;;;;N;;;;;
-//	4DB5;<CJK Ideograph Extension A, Last>;Lo;0;L;;;;;N;;;;;
-// parseCharacter keeps a state variable indicating the weirdness.
-type State int
-
-const (
-	SNormal State = iota // known to be zero for the type
-	SFirst
-	SLast
-	SMissing
-)
-
-var lastChar = rune('\u0000')
-
-func (c Char) isValid() bool {
-	return c.codePoint != 0 && c.state != SMissing
-}
-
-type FormInfo struct {
-	quickCheck [MNumberOfModes]QCResult // index: MComposed or MDecomposed
-	verified   [MNumberOfModes]bool     // index: MComposed or MDecomposed
-
-	combinesForward  bool // May combine with rune on the right
-	combinesBackward bool // May combine with rune on the left
-	isOneWay         bool // Never appears in result
-	inDecomp         bool // Some decompositions result in this char.
-	decomp           Decomposition
-	expandedDecomp   Decomposition
-}
-
-func (f FormInfo) String() string {
-	buf := bytes.NewBuffer(make([]byte, 0))
-
-	fmt.Fprintf(buf, "    quickCheck[C]: %v\n", f.quickCheck[MComposed])
-	fmt.Fprintf(buf, "    quickCheck[D]: %v\n", f.quickCheck[MDecomposed])
-	fmt.Fprintf(buf, "    cmbForward: %v\n", f.combinesForward)
-	fmt.Fprintf(buf, "    cmbBackward: %v\n", f.combinesBackward)
-	fmt.Fprintf(buf, "    isOneWay: %v\n", f.isOneWay)
-	fmt.Fprintf(buf, "    inDecomp: %v\n", f.inDecomp)
-	fmt.Fprintf(buf, "    decomposition: %X\n", f.decomp)
-	fmt.Fprintf(buf, "    expandedDecomp: %X\n", f.expandedDecomp)
-
-	return buf.String()
-}
-
-type Decomposition []rune
-
-func parseDecomposition(s string, skipfirst bool) (a []rune, err error) {
-	decomp := strings.Split(s, " ")
-	if len(decomp) > 0 && skipfirst {
-		decomp = decomp[1:]
-	}
-	for _, d := range decomp {
-		point, err := strconv.ParseUint(d, 16, 64)
-		if err != nil {
-			return a, err
-		}
-		a = append(a, rune(point))
-	}
-	return a, nil
-}
-
-func loadUnicodeData() {
-	f := gen.OpenUCDFile("UnicodeData.txt")
-	defer f.Close()
-	p := ucd.New(f)
-	for p.Next() {
-		r := p.Rune(ucd.CodePoint)
-		char := &chars[r]
-
-		char.ccc = uint8(p.Uint(ucd.CanonicalCombiningClass))
-		decmap := p.String(ucd.DecompMapping)
-
-		exp, err := parseDecomposition(decmap, false)
-		isCompat := false
-		if err != nil {
-			if len(decmap) > 0 {
-				exp, err = parseDecomposition(decmap, true)
-				if err != nil {
-					log.Fatalf(`%U: bad decomp |%v|: "%s"`, r, decmap, err)
-				}
-				isCompat = true
-			}
-		}
-
-		char.name = p.String(ucd.Name)
-		char.codePoint = r
-		char.forms[FCompatibility].decomp = exp
-		if !isCompat {
-			char.forms[FCanonical].decomp = exp
-		} else {
-			char.compatDecomp = true
-		}
-		if len(decmap) > 0 {
-			char.forms[FCompatibility].decomp = exp
-		}
-	}
-	if err := p.Err(); err != nil {
-		log.Fatal(err)
-	}
-}
-
-// compactCCC converts the sparse set of CCC values to a continguous one,
-// reducing the number of bits needed from 8 to 6.
-func compactCCC() {
-	m := make(map[uint8]uint8)
-	for i := range chars {
-		c := &chars[i]
-		m[c.ccc] = 0
-	}
-	cccs := []int{}
-	for v, _ := range m {
-		cccs = append(cccs, int(v))
-	}
-	sort.Ints(cccs)
-	for i, c := range cccs {
-		cccMap[uint8(i)] = uint8(c)
-		m[uint8(c)] = uint8(i)
-	}
-	for i := range chars {
-		c := &chars[i]
-		c.origCCC = c.ccc
-		c.ccc = m[c.ccc]
-	}
-	if len(m) >= 1<<6 {
-		log.Fatalf("too many difference CCC values: %d >= 64", len(m))
-	}
-}
-
-// CompositionExclusions.txt has form:
-// 0958    # ...
-// See http://unicode.org/reports/tr44/ for full explanation
-func loadCompositionExclusions() {
-	f := gen.OpenUCDFile("CompositionExclusions.txt")
-	defer f.Close()
-	p := ucd.New(f)
-	for p.Next() {
-		c := &chars[p.Rune(0)]
-		if c.excludeInComp {
-			log.Fatalf("%U: Duplicate entry in exclusions.", c.codePoint)
-		}
-		c.excludeInComp = true
-	}
-	if e := p.Err(); e != nil {
-		log.Fatal(e)
-	}
-}
-
-// hasCompatDecomp returns true if any of the recursive
-// decompositions contains a compatibility expansion.
-// In this case, the character may not occur in NFK*.
-func hasCompatDecomp(r rune) bool {
-	c := &chars[r]
-	if c.compatDecomp {
-		return true
-	}
-	for _, d := range c.forms[FCompatibility].decomp {
-		if hasCompatDecomp(d) {
-			return true
-		}
-	}
-	return false
-}
-
-// Hangul related constants.
-const (
-	HangulBase = 0xAC00
-	HangulEnd  = 0xD7A4 // hangulBase + Jamo combinations (19 * 21 * 28)
-
-	JamoLBase = 0x1100
-	JamoLEnd  = 0x1113
-	JamoVBase = 0x1161
-	JamoVEnd  = 0x1176
-	JamoTBase = 0x11A8
-	JamoTEnd  = 0x11C3
-
-	JamoLVTCount = 19 * 21 * 28
-	JamoTCount   = 28
-)
-
-func isHangul(r rune) bool {
-	return HangulBase <= r && r < HangulEnd
-}
-
-func isHangulWithoutJamoT(r rune) bool {
-	if !isHangul(r) {
-		return false
-	}
-	r -= HangulBase
-	return r < JamoLVTCount && r%JamoTCount == 0
-}
-
-func ccc(r rune) uint8 {
-	return chars[r].ccc
-}
-
-// Insert a rune in a buffer, ordered by Canonical Combining Class.
-func insertOrdered(b Decomposition, r rune) Decomposition {
-	n := len(b)
-	b = append(b, 0)
-	cc := ccc(r)
-	if cc > 0 {
-		// Use bubble sort.
-		for ; n > 0; n-- {
-			if ccc(b[n-1]) <= cc {
-				break
-			}
-			b[n] = b[n-1]
-		}
-	}
-	b[n] = r
-	return b
-}
-
-// Recursively decompose.
-func decomposeRecursive(form int, r rune, d Decomposition) Decomposition {
-	dcomp := chars[r].forms[form].decomp
-	if len(dcomp) == 0 {
-		return insertOrdered(d, r)
-	}
-	for _, c := range dcomp {
-		d = decomposeRecursive(form, c, d)
-	}
-	return d
-}
-
-func completeCharFields(form int) {
-	// Phase 0: pre-expand decomposition.
-	for i := range chars {
-		f := &chars[i].forms[form]
-		if len(f.decomp) == 0 {
-			continue
-		}
-		exp := make(Decomposition, 0)
-		for _, c := range f.decomp {
-			exp = decomposeRecursive(form, c, exp)
-		}
-		f.expandedDecomp = exp
-	}
-
-	// Phase 1: composition exclusion, mark decomposition.
-	for i := range chars {
-		c := &chars[i]
-		f := &c.forms[form]
-
-		// Marks script-specific exclusions and version restricted.
-		f.isOneWay = c.excludeInComp
-
-		// Singletons
-		f.isOneWay = f.isOneWay || len(f.decomp) == 1
-
-		// Non-starter decompositions
-		if len(f.decomp) > 1 {
-			chk := c.ccc != 0 || chars[f.decomp[0]].ccc != 0
-			f.isOneWay = f.isOneWay || chk
-		}
-
-		// Runes that decompose into more than two runes.
-		f.isOneWay = f.isOneWay || len(f.decomp) > 2
-
-		if form == FCompatibility {
-			f.isOneWay = f.isOneWay || hasCompatDecomp(c.codePoint)
-		}
-
-		for _, r := range f.decomp {
-			chars[r].forms[form].inDecomp = true
-		}
-	}
-
-	// Phase 2: forward and backward combining.
-	for i := range chars {
-		c := &chars[i]
-		f := &c.forms[form]
-
-		if !f.isOneWay && len(f.decomp) == 2 {
-			f0 := &chars[f.decomp[0]].forms[form]
-			f1 := &chars[f.decomp[1]].forms[form]
-			if !f0.isOneWay {
-				f0.combinesForward = true
-			}
-			if !f1.isOneWay {
-				f1.combinesBackward = true
-			}
-		}
-		if isHangulWithoutJamoT(rune(i)) {
-			f.combinesForward = true
-		}
-	}
-
-	// Phase 3: quick check values.
-	for i := range chars {
-		c := &chars[i]
-		f := &c.forms[form]
-
-		switch {
-		case len(f.decomp) > 0:
-			f.quickCheck[MDecomposed] = QCNo
-		case isHangul(rune(i)):
-			f.quickCheck[MDecomposed] = QCNo
-		default:
-			f.quickCheck[MDecomposed] = QCYes
-		}
-		switch {
-		case f.isOneWay:
-			f.quickCheck[MComposed] = QCNo
-		case (i & 0xffff00) == JamoLBase:
-			f.quickCheck[MComposed] = QCYes
-			if JamoLBase <= i && i < JamoLEnd {
-				f.combinesForward = true
-			}
-			if JamoVBase <= i && i < JamoVEnd {
-				f.quickCheck[MComposed] = QCMaybe
-				f.combinesBackward = true
-				f.combinesForward = true
-			}
-			if JamoTBase <= i && i < JamoTEnd {
-				f.quickCheck[MComposed] = QCMaybe
-				f.combinesBackward = true
-			}
-		case !f.combinesBackward:
-			f.quickCheck[MComposed] = QCYes
-		default:
-			f.quickCheck[MComposed] = QCMaybe
-		}
-	}
-}
-
-func computeNonStarterCounts() {
-	// Phase 4: leading and trailing non-starter count
-	for i := range chars {
-		c := &chars[i]
-
-		runes := []rune{rune(i)}
-		// We always use FCompatibility so that the CGJ insertion points do not
-		// change for repeated normalizations with different forms.
-		if exp := c.forms[FCompatibility].expandedDecomp; len(exp) > 0 {
-			runes = exp
-		}
-		// We consider runes that combine backwards to be non-starters for the
-		// purpose of Stream-Safe Text Processing.
-		for _, r := range runes {
-			if cr := &chars[r]; cr.ccc == 0 && !cr.forms[FCompatibility].combinesBackward {
-				break
-			}
-			c.nLeadingNonStarters++
-		}
-		for i := len(runes) - 1; i >= 0; i-- {
-			if cr := &chars[runes[i]]; cr.ccc == 0 && !cr.forms[FCompatibility].combinesBackward {
-				break
-			}
-			c.nTrailingNonStarters++
-		}
-		if c.nTrailingNonStarters > 3 {
-			log.Fatalf("%U: Decomposition with more than 3 (%d) trailing modifiers (%U)", i, c.nTrailingNonStarters, runes)
-		}
-
-		if isHangul(rune(i)) {
-			c.nTrailingNonStarters = 2
-			if isHangulWithoutJamoT(rune(i)) {
-				c.nTrailingNonStarters = 1
-			}
-		}
-
-		if l, t := c.nLeadingNonStarters, c.nTrailingNonStarters; l > 0 && l != t {
-			log.Fatalf("%U: number of leading and trailing non-starters should be equal (%d vs %d)", i, l, t)
-		}
-		if t := c.nTrailingNonStarters; t > 3 {
-			log.Fatalf("%U: number of trailing non-starters is %d > 3", t)
-		}
-	}
-}
-
-func printBytes(w io.Writer, b []byte, name string) {
-	fmt.Fprintf(w, "// %s: %d bytes\n", name, len(b))
-	fmt.Fprintf(w, "var %s = [...]byte {", name)
-	for i, c := range b {
-		switch {
-		case i%64 == 0:
-			fmt.Fprintf(w, "\n// Bytes %x - %x\n", i, i+63)
-		case i%8 == 0:
-			fmt.Fprintf(w, "\n")
-		}
-		fmt.Fprintf(w, "0x%.2X, ", c)
-	}
-	fmt.Fprint(w, "\n}\n\n")
-}
-
-// See forminfo.go for format.
-func makeEntry(f *FormInfo, c *Char) uint16 {
-	e := uint16(0)
-	if r := c.codePoint; HangulBase <= r && r < HangulEnd {
-		e |= 0x40
-	}
-	if f.combinesForward {
-		e |= 0x20
-	}
-	if f.quickCheck[MDecomposed] == QCNo {
-		e |= 0x4
-	}
-	switch f.quickCheck[MComposed] {
-	case QCYes:
-	case QCNo:
-		e |= 0x10
-	case QCMaybe:
-		e |= 0x18
-	default:
-		log.Fatalf("Illegal quickcheck value %v.", f.quickCheck[MComposed])
-	}
-	e |= uint16(c.nTrailingNonStarters)
-	return e
-}
-
-// decompSet keeps track of unique decompositions, grouped by whether
-// the decomposition is followed by a trailing and/or leading CCC.
-type decompSet [7]map[string]bool
-
-const (
-	normalDecomp = iota
-	firstMulti
-	firstCCC
-	endMulti
-	firstLeadingCCC
-	firstCCCZeroExcept
-	firstStarterWithNLead
-	lastDecomp
-)
-
-var cname = []string{"firstMulti", "firstCCC", "endMulti", "firstLeadingCCC", "firstCCCZeroExcept", "firstStarterWithNLead", "lastDecomp"}
-
-func makeDecompSet() decompSet {
-	m := decompSet{}
-	for i := range m {
-		m[i] = make(map[string]bool)
-	}
-	return m
-}
-func (m *decompSet) insert(key int, s string) {
-	m[key][s] = true
-}
-
-func printCharInfoTables(w io.Writer) int {
-	mkstr := func(r rune, f *FormInfo) (int, string) {
-		d := f.expandedDecomp
-		s := string([]rune(d))
-		if max := 1 << 6; len(s) >= max {
-			const msg = "%U: too many bytes in decomposition: %d >= %d"
-			log.Fatalf(msg, r, len(s), max)
-		}
-		head := uint8(len(s))
-		if f.quickCheck[MComposed] != QCYes {
-			head |= 0x40
-		}
-		if f.combinesForward {
-			head |= 0x80
-		}
-		s = string([]byte{head}) + s
-
-		lccc := ccc(d[0])
-		tccc := ccc(d[len(d)-1])
-		cc := ccc(r)
-		if cc != 0 && lccc == 0 && tccc == 0 {
-			log.Fatalf("%U: trailing and leading ccc are 0 for non-zero ccc %d", r, cc)
-		}
-		if tccc < lccc && lccc != 0 {
-			const msg = "%U: lccc (%d) must be <= tcc (%d)"
-			log.Fatalf(msg, r, lccc, tccc)
-		}
-		index := normalDecomp
-		nTrail := chars[r].nTrailingNonStarters
-		nLead := chars[r].nLeadingNonStarters
-		if tccc > 0 || lccc > 0 || nTrail > 0 {
-			tccc <<= 2
-			tccc |= nTrail
-			s += string([]byte{tccc})
-			index = endMulti
-			for _, r := range d[1:] {
-				if ccc(r) == 0 {
-					index = firstCCC
-				}
-			}
-			if lccc > 0 || nLead > 0 {
-				s += string([]byte{lccc})
-				if index == firstCCC {
-					log.Fatalf("%U: multi-segment decomposition not supported for decompositions with leading CCC != 0", r)
-				}
-				index = firstLeadingCCC
-			}
-			if cc != lccc {
-				if cc != 0 {
-					log.Fatalf("%U: for lccc != ccc, expected ccc to be 0; was %d", r, cc)
-				}
-				index = firstCCCZeroExcept
-			}
-		} else if len(d) > 1 {
-			index = firstMulti
-		}
-		return index, s
-	}
-
-	decompSet := makeDecompSet()
-	const nLeadStr = "\x00\x01" // 0-byte length and tccc with nTrail.
-	decompSet.insert(firstStarterWithNLead, nLeadStr)
-
-	// Store the uniqued decompositions in a byte buffer,
-	// preceded by their byte length.
-	for _, c := range chars {
-		for _, f := range c.forms {
-			if len(f.expandedDecomp) == 0 {
-				continue
-			}
-			if f.combinesBackward {
-				log.Fatalf("%U: combinesBackward and decompose", c.codePoint)
-			}
-			index, s := mkstr(c.codePoint, &f)
-			decompSet.insert(index, s)
-		}
-	}
-
-	decompositions := bytes.NewBuffer(make([]byte, 0, 10000))
-	size := 0
-	positionMap := make(map[string]uint16)
-	decompositions.WriteString("\000")
-	fmt.Fprintln(w, "const (")
-	for i, m := range decompSet {
-		sa := []string{}
-		for s := range m {
-			sa = append(sa, s)
-		}
-		sort.Strings(sa)
-		for _, s := range sa {
-			p := decompositions.Len()
-			decompositions.WriteString(s)
-			positionMap[s] = uint16(p)
-		}
-		if cname[i] != "" {
-			fmt.Fprintf(w, "%s = 0x%X\n", cname[i], decompositions.Len())
-		}
-	}
-	fmt.Fprintln(w, "maxDecomp = 0x8000")
-	fmt.Fprintln(w, ")")
-	b := decompositions.Bytes()
-	printBytes(w, b, "decomps")
-	size += len(b)
-
-	varnames := []string{"nfc", "nfkc"}
-	for i := 0; i < FNumberOfFormTypes; i++ {
-		trie := triegen.NewTrie(varnames[i])
-
-		for r, c := range chars {
-			f := c.forms[i]
-			d := f.expandedDecomp
-			if len(d) != 0 {
-				_, key := mkstr(c.codePoint, &f)
-				trie.Insert(rune(r), uint64(positionMap[key]))
-				if c.ccc != ccc(d[0]) {
-					// We assume the lead ccc of a decomposition !=0 in this case.
-					if ccc(d[0]) == 0 {
-						log.Fatalf("Expected leading CCC to be non-zero; ccc is %d", c.ccc)
-					}
-				}
-			} else if c.nLeadingNonStarters > 0 && len(f.expandedDecomp) == 0 && c.ccc == 0 && !f.combinesBackward {
-				// Handle cases where it can't be detected that the nLead should be equal
-				// to nTrail.
-				trie.Insert(c.codePoint, uint64(positionMap[nLeadStr]))
-			} else if v := makeEntry(&f, &c)<<8 | uint16(c.ccc); v != 0 {
-				trie.Insert(c.codePoint, uint64(0x8000|v))
-			}
-		}
-		sz, err := trie.Gen(w, triegen.Compact(&normCompacter{name: varnames[i]}))
-		if err != nil {
-			log.Fatal(err)
-		}
-		size += sz
-	}
-	return size
-}
-
-func contains(sa []string, s string) bool {
-	for _, a := range sa {
-		if a == s {
-			return true
-		}
-	}
-	return false
-}
-
-func makeTables() {
-	w := &bytes.Buffer{}
-
-	size := 0
-	if *tablelist == "" {
-		return
-	}
-	list := strings.Split(*tablelist, ",")
-	if *tablelist == "all" {
-		list = []string{"recomp", "info"}
-	}
-
-	// Compute maximum decomposition size.
-	max := 0
-	for _, c := range chars {
-		if n := len(string(c.forms[FCompatibility].expandedDecomp)); n > max {
-			max = n
-		}
-	}
-
-	fmt.Fprintln(w, "const (")
-	fmt.Fprintln(w, "\t// Version is the Unicode edition from which the tables are derived.")
-	fmt.Fprintf(w, "\tVersion = %q\n", gen.UnicodeVersion())
-	fmt.Fprintln(w)
-	fmt.Fprintln(w, "\t// MaxTransformChunkSize indicates the maximum number of bytes that Transform")
-	fmt.Fprintln(w, "\t// may need to write atomically for any Form. Making a destination buffer at")
-	fmt.Fprintln(w, "\t// least this size ensures that Transform can always make progress and that")
-	fmt.Fprintln(w, "\t// the user does not need to grow the buffer on an ErrShortDst.")
-	fmt.Fprintf(w, "\tMaxTransformChunkSize = %d+maxNonStarters*4\n", len(string(0x034F))+max)
-	fmt.Fprintln(w, ")\n")
-
-	// Print the CCC remap table.
-	size += len(cccMap)
-	fmt.Fprintf(w, "var ccc = [%d]uint8{", len(cccMap))
-	for i := 0; i < len(cccMap); i++ {
-		if i%8 == 0 {
-			fmt.Fprintln(w)
-		}
-		fmt.Fprintf(w, "%3d, ", cccMap[uint8(i)])
-	}
-	fmt.Fprintln(w, "\n}\n")
-
-	if contains(list, "info") {
-		size += printCharInfoTables(w)
-	}
-
-	if contains(list, "recomp") {
-		// Note that we use 32 bit keys, instead of 64 bit.
-		// This clips the bits of three entries, but we know
-		// this won't cause a collision. The compiler will catch
-		// any changes made to UnicodeData.txt that introduces
-		// a collision.
-		// Note that the recomposition map for NFC and NFKC
-		// are identical.
-
-		// Recomposition map
-		nrentries := 0
-		for _, c := range chars {
-			f := c.forms[FCanonical]
-			if !f.isOneWay && len(f.decomp) > 0 {
-				nrentries++
-			}
-		}
-		sz := nrentries * 8
-		size += sz
-		fmt.Fprintf(w, "// recompMap: %d bytes (entries only)\n", sz)
-		fmt.Fprintln(w, "var recompMap = map[uint32]rune{")
-		for i, c := range chars {
-			f := c.forms[FCanonical]
-			d := f.decomp
-			if !f.isOneWay && len(d) > 0 {
-				key := uint32(uint16(d[0]))<<16 + uint32(uint16(d[1]))
-				fmt.Fprintf(w, "0x%.8X: 0x%.4X,\n", key, i)
-			}
-		}
-		fmt.Fprintf(w, "}\n\n")
-	}
-
-	fmt.Fprintf(w, "// Total size of tables: %dKB (%d bytes)\n", (size+512)/1024, size)
-	gen.WriteVersionedGoFile("tables.go", "norm", w.Bytes())
-}
-
-func printChars() {
-	if *verbose {
-		for _, c := range chars {
-			if !c.isValid() || c.state == SMissing {
-				continue
-			}
-			fmt.Println(c)
-		}
-	}
-}
-
-// verifyComputed does various consistency tests.
-func verifyComputed() {
-	for i, c := range chars {
-		for _, f := range c.forms {
-			isNo := (f.quickCheck[MDecomposed] == QCNo)
-			if (len(f.decomp) > 0) != isNo && !isHangul(rune(i)) {
-				log.Fatalf("%U: NF*D QC must be No if rune decomposes", i)
-			}
-
-			isMaybe := f.quickCheck[MComposed] == QCMaybe
-			if f.combinesBackward != isMaybe {
-				log.Fatalf("%U: NF*C QC must be Maybe if combinesBackward", i)
-			}
-			if len(f.decomp) > 0 && f.combinesForward && isMaybe {
-				log.Fatalf("%U: NF*C QC must be Yes or No if combinesForward and decomposes", i)
-			}
-
-			if len(f.expandedDecomp) != 0 {
-				continue
-			}
-			if a, b := c.nLeadingNonStarters > 0, (c.ccc > 0 || f.combinesBackward); a != b {
-				// We accept these runes to be treated differently (it only affects
-				// segment breaking in iteration, most likely on improper use), but
-				// reconsider if more characters are added.
-				// U+FF9E HALFWIDTH KATAKANA VOICED SOUND MARK;Lm;0;L;<narrow> 3099;;;;N;;;;;
-				// U+FF9F HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK;Lm;0;L;<narrow> 309A;;;;N;;;;;
-				// U+3133 HANGUL LETTER KIYEOK-SIOS;Lo;0;L;<compat> 11AA;;;;N;HANGUL LETTER GIYEOG SIOS;;;;
-				// U+318E HANGUL LETTER ARAEAE;Lo;0;L;<compat> 11A1;;;;N;HANGUL LETTER ALAE AE;;;;
-				// U+FFA3 HALFWIDTH HANGUL LETTER KIYEOK-SIOS;Lo;0;L;<narrow> 3133;;;;N;HALFWIDTH HANGUL LETTER GIYEOG SIOS;;;;
-				// U+FFDC HALFWIDTH HANGUL LETTER I;Lo;0;L;<narrow> 3163;;;;N;;;;;
-				if i != 0xFF9E && i != 0xFF9F && !(0x3133 <= i && i <= 0x318E) && !(0xFFA3 <= i && i <= 0xFFDC) {
-					log.Fatalf("%U: nLead was %v; want %v", i, a, b)
-				}
-			}
-		}
-		nfc := c.forms[FCanonical]
-		nfkc := c.forms[FCompatibility]
-		if nfc.combinesBackward != nfkc.combinesBackward {
-			log.Fatalf("%U: Cannot combine combinesBackward\n", c.codePoint)
-		}
-	}
-}
-
-// Use values in DerivedNormalizationProps.txt to compare against the
-// values we computed.
-// DerivedNormalizationProps.txt has form:
-// 00C0..00C5    ; NFD_QC; N # ...
-// 0374          ; NFD_QC; N # ...
-// See http://unicode.org/reports/tr44/ for full explanation
-func testDerived() {
-	f := gen.OpenUCDFile("DerivedNormalizationProps.txt")
-	defer f.Close()
-	p := ucd.New(f)
-	for p.Next() {
-		r := p.Rune(0)
-		c := &chars[r]
-
-		var ftype, mode int
-		qt := p.String(1)
-		switch qt {
-		case "NFC_QC":
-			ftype, mode = FCanonical, MComposed
-		case "NFD_QC":
-			ftype, mode = FCanonical, MDecomposed
-		case "NFKC_QC":
-			ftype, mode = FCompatibility, MComposed
-		case "NFKD_QC":
-			ftype, mode = FCompatibility, MDecomposed
-		default:
-			continue
-		}
-		var qr QCResult
-		switch p.String(2) {
-		case "Y":
-			qr = QCYes
-		case "N":
-			qr = QCNo
-		case "M":
-			qr = QCMaybe
-		default:
-			log.Fatalf(`Unexpected quick check value "%s"`, p.String(2))
-		}
-		if got := c.forms[ftype].quickCheck[mode]; got != qr {
-			log.Printf("%U: FAILED %s (was %v need %v)\n", r, qt, got, qr)
-		}
-		c.forms[ftype].verified[mode] = true
-	}
-	if err := p.Err(); err != nil {
-		log.Fatal(err)
-	}
-	// Any unspecified value must be QCYes. Verify this.
-	for i, c := range chars {
-		for j, fd := range c.forms {
-			for k, qr := range fd.quickCheck {
-				if !fd.verified[k] && qr != QCYes {
-					m := "%U: FAIL F:%d M:%d (was %v need Yes) %s\n"
-					log.Printf(m, i, j, k, qr, c.name)
-				}
-			}
-		}
-	}
-}
-
-var testHeader = `const (
-	Yes = iota
-	No
-	Maybe
-)
-
-type formData struct {
-	qc              uint8
-	combinesForward bool
-	decomposition   string
-}
-
-type runeData struct {
-	r      rune
-	ccc    uint8
-	nLead  uint8
-	nTrail uint8
-	f      [2]formData // 0: canonical; 1: compatibility
-}
-
-func f(qc uint8, cf bool, dec string) [2]formData {
-	return [2]formData{{qc, cf, dec}, {qc, cf, dec}}
-}
-
-func g(qc, qck uint8, cf, cfk bool, d, dk string) [2]formData {
-	return [2]formData{{qc, cf, d}, {qck, cfk, dk}}
-}
-
-var testData = []runeData{
-`
-
-func printTestdata() {
-	type lastInfo struct {
-		ccc    uint8
-		nLead  uint8
-		nTrail uint8
-		f      string
-	}
-
-	last := lastInfo{}
-	w := &bytes.Buffer{}
-	fmt.Fprintf(w, testHeader)
-	for r, c := range chars {
-		f := c.forms[FCanonical]
-		qc, cf, d := f.quickCheck[MComposed], f.combinesForward, string(f.expandedDecomp)
-		f = c.forms[FCompatibility]
-		qck, cfk, dk := f.quickCheck[MComposed], f.combinesForward, string(f.expandedDecomp)
-		s := ""
-		if d == dk && qc == qck && cf == cfk {
-			s = fmt.Sprintf("f(%s, %v, %q)", qc, cf, d)
-		} else {
-			s = fmt.Sprintf("g(%s, %s, %v, %v, %q, %q)", qc, qck, cf, cfk, d, dk)
-		}
-		current := lastInfo{c.ccc, c.nLeadingNonStarters, c.nTrailingNonStarters, s}
-		if last != current {
-			fmt.Fprintf(w, "\t{0x%x, %d, %d, %d, %s},\n", r, c.origCCC, c.nLeadingNonStarters, c.nTrailingNonStarters, s)
-			last = current
-		}
-	}
-	fmt.Fprintln(w, "}")
-	gen.WriteVersionedGoFile("data_test.go", "norm", w.Bytes())
-}
diff --git a/vendor/golang.org/x/text/unicode/norm/triegen.go b/vendor/golang.org/x/text/unicode/norm/triegen.go
deleted file mode 100644
index 45d71190..00000000
--- a/vendor/golang.org/x/text/unicode/norm/triegen.go
+++ /dev/null
@@ -1,117 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// Trie table generator.
-// Used by make*tables tools to generate a go file with trie data structures
-// for mapping UTF-8 to a 16-bit value. All but the last byte in a UTF-8 byte
-// sequence are used to lookup offsets in the index table to be used for the
-// next byte. The last byte is used to index into a table with 16-bit values.
-
-package main
-
-import (
-	"fmt"
-	"io"
-)
-
-const maxSparseEntries = 16
-
-type normCompacter struct {
-	sparseBlocks [][]uint64
-	sparseOffset []uint16
-	sparseCount  int
-	name         string
-}
-
-func mostFrequentStride(a []uint64) int {
-	counts := make(map[int]int)
-	var v int
-	for _, x := range a {
-		if stride := int(x) - v; v != 0 && stride >= 0 {
-			counts[stride]++
-		}
-		v = int(x)
-	}
-	var maxs, maxc int
-	for stride, cnt := range counts {
-		if cnt > maxc || (cnt == maxc && stride < maxs) {
-			maxs, maxc = stride, cnt
-		}
-	}
-	return maxs
-}
-
-func countSparseEntries(a []uint64) int {
-	stride := mostFrequentStride(a)
-	var v, count int
-	for _, tv := range a {
-		if int(tv)-v != stride {
-			if tv != 0 {
-				count++
-			}
-		}
-		v = int(tv)
-	}
-	return count
-}
-
-func (c *normCompacter) Size(v []uint64) (sz int, ok bool) {
-	if n := countSparseEntries(v); n <= maxSparseEntries {
-		return (n+1)*4 + 2, true
-	}
-	return 0, false
-}
-
-func (c *normCompacter) Store(v []uint64) uint32 {
-	h := uint32(len(c.sparseOffset))
-	c.sparseBlocks = append(c.sparseBlocks, v)
-	c.sparseOffset = append(c.sparseOffset, uint16(c.sparseCount))
-	c.sparseCount += countSparseEntries(v) + 1
-	return h
-}
-
-func (c *normCompacter) Handler() string {
-	return c.name + "Sparse.lookup"
-}
-
-func (c *normCompacter) Print(w io.Writer) (retErr error) {
-	p := func(f string, x ...interface{}) {
-		if _, err := fmt.Fprintf(w, f, x...); retErr == nil && err != nil {
-			retErr = err
-		}
-	}
-
-	ls := len(c.sparseBlocks)
-	p("// %sSparseOffset: %d entries, %d bytes\n", c.name, ls, ls*2)
-	p("var %sSparseOffset = %#v\n\n", c.name, c.sparseOffset)
-
-	ns := c.sparseCount
-	p("// %sSparseValues: %d entries, %d bytes\n", c.name, ns, ns*4)
-	p("var %sSparseValues = [%d]valueRange {", c.name, ns)
-	for i, b := range c.sparseBlocks {
-		p("\n// Block %#x, offset %#x", i, c.sparseOffset[i])
-		var v int
-		stride := mostFrequentStride(b)
-		n := countSparseEntries(b)
-		p("\n{value:%#04x,lo:%#02x},", stride, uint8(n))
-		for i, nv := range b {
-			if int(nv)-v != stride {
-				if v != 0 {
-					p(",hi:%#02x},", 0x80+i-1)
-				}
-				if nv != 0 {
-					p("\n{value:%#04x,lo:%#02x", nv, 0x80+i)
-				}
-			}
-			v = int(nv)
-		}
-		if v != 0 {
-			p(",hi:%#02x},", 0x80+len(b)-1)
-		}
-	}
-	p("\n}\n\n")
-	return
-}
diff --git a/vendor/golang.org/x/tools/go/gcexportdata/main.go b/vendor/golang.org/x/tools/go/gcexportdata/main.go
deleted file mode 100644
index 2713dce6..00000000
--- a/vendor/golang.org/x/tools/go/gcexportdata/main.go
+++ /dev/null
@@ -1,99 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// The gcexportdata command is a diagnostic tool that displays the
-// contents of gc export data files.
-package main
-
-import (
-	"flag"
-	"fmt"
-	"go/token"
-	"go/types"
-	"log"
-	"os"
-
-	"golang.org/x/tools/go/gcexportdata"
-	"golang.org/x/tools/go/types/typeutil"
-)
-
-var packageFlag = flag.String("package", "", "alternative package to print")
-
-func main() {
-	log.SetPrefix("gcexportdata: ")
-	log.SetFlags(0)
-	flag.Usage = func() {
-		fmt.Fprintln(os.Stderr, "usage: gcexportdata [-package path] file.a")
-	}
-	flag.Parse()
-	if flag.NArg() != 1 {
-		flag.Usage()
-		os.Exit(2)
-	}
-	filename := flag.Args()[0]
-
-	f, err := os.Open(filename)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	r, err := gcexportdata.NewReader(f)
-	if err != nil {
-		log.Fatalf("%s: %s", filename, err)
-	}
-
-	// Decode the package.
-	const primary = "<primary>"
-	imports := make(map[string]*types.Package)
-	fset := token.NewFileSet()
-	pkg, err := gcexportdata.Read(r, fset, imports, primary)
-	if err != nil {
-		log.Fatalf("%s: %s", filename, err)
-	}
-
-	// Optionally select an indirectly mentioned package.
-	if *packageFlag != "" {
-		pkg = imports[*packageFlag]
-		if pkg == nil {
-			fmt.Fprintf(os.Stderr, "export data file %s does not mention %s; has:\n",
-				filename, *packageFlag)
-			for p := range imports {
-				if p != primary {
-					fmt.Fprintf(os.Stderr, "\t%s\n", p)
-				}
-			}
-			os.Exit(1)
-		}
-	}
-
-	// Print all package-level declarations, including non-exported ones.
-	fmt.Printf("package %s\n", pkg.Name())
-	for _, imp := range pkg.Imports() {
-		fmt.Printf("import %q\n", imp.Path())
-	}
-	qual := func(p *types.Package) string {
-		if pkg == p {
-			return ""
-		}
-		return p.Name()
-	}
-	scope := pkg.Scope()
-	for _, name := range scope.Names() {
-		obj := scope.Lookup(name)
-		fmt.Printf("%s: %s\n",
-			fset.Position(obj.Pos()),
-			types.ObjectString(obj, qual))
-
-		// For types, print each method.
-		if _, ok := obj.(*types.TypeName); ok {
-			for _, method := range typeutil.IntuitiveMethodSet(obj.Type(), nil) {
-				fmt.Printf("%s: %s\n",
-					fset.Position(method.Obj().Pos()),
-					types.SelectionString(method, qual))
-			}
-		}
-	}
-}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index dd6df96a..d7276810 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -1,26 +1,26 @@
 # github.com/Microsoft/go-winio v0.4.12
 github.com/Microsoft/go-winio
 # github.com/docker/distribution v0.0.0-20180327202408-83389a148052
-github.com/docker/distribution/reference
 github.com/docker/distribution/digestset
+github.com/docker/distribution/reference
 # github.com/docker/docker v0.0.0-20180531152204-71cd53e4a197
+github.com/docker/docker/api
 github.com/docker/docker/api/types
-github.com/docker/docker/client
+github.com/docker/docker/api/types/blkiodev
 github.com/docker/docker/api/types/container
+github.com/docker/docker/api/types/events
 github.com/docker/docker/api/types/filters
+github.com/docker/docker/api/types/image
 github.com/docker/docker/api/types/mount
 github.com/docker/docker/api/types/network
 github.com/docker/docker/api/types/registry
+github.com/docker/docker/api/types/strslice
 github.com/docker/docker/api/types/swarm
-github.com/docker/docker/api
-github.com/docker/docker/api/types/events
-github.com/docker/docker/api/types/image
+github.com/docker/docker/api/types/swarm/runtime
 github.com/docker/docker/api/types/time
 github.com/docker/docker/api/types/versions
 github.com/docker/docker/api/types/volume
-github.com/docker/docker/api/types/blkiodev
-github.com/docker/docker/api/types/strslice
-github.com/docker/docker/api/types/swarm/runtime
+github.com/docker/docker/client
 # github.com/docker/go-connections v0.0.0-20180212134524-7beb39f0b969
 github.com/docker/go-connections/nat
 github.com/docker/go-connections/sockets
@@ -40,8 +40,8 @@ github.com/gogo/protobuf/sortkeys
 github.com/golang/glog
 # github.com/golang/protobuf v1.1.0
 github.com/golang/protobuf/proto
-github.com/golang/protobuf/ptypes/any
 github.com/golang/protobuf/ptypes
+github.com/golang/protobuf/ptypes/any
 github.com/golang/protobuf/ptypes/duration
 github.com/golang/protobuf/ptypes/timestamp
 # github.com/google/btree v1.0.0
@@ -53,21 +53,21 @@ github.com/google/go-cmp/cmp/internal/diff
 github.com/google/go-cmp/cmp/internal/function
 github.com/google/go-cmp/cmp/internal/value
 # github.com/google/go-containerregistry v0.0.0-20190623150931-ca8b66cb1b79
-github.com/google/go-containerregistry/pkg/v1
-github.com/google/go-containerregistry/pkg/v1/mutate
-github.com/google/go-containerregistry/pkg/v1/tarball
 github.com/google/go-containerregistry/pkg/authn
+github.com/google/go-containerregistry/pkg/internal/retry
 github.com/google/go-containerregistry/pkg/name
-github.com/google/go-containerregistry/pkg/v1/remote
+github.com/google/go-containerregistry/pkg/v1
 github.com/google/go-containerregistry/pkg/v1/daemon
-github.com/google/go-containerregistry/pkg/v1/types
 github.com/google/go-containerregistry/pkg/v1/empty
+github.com/google/go-containerregistry/pkg/v1/mutate
 github.com/google/go-containerregistry/pkg/v1/partial
-github.com/google/go-containerregistry/pkg/v1/stream
-github.com/google/go-containerregistry/pkg/v1/v1util
 github.com/google/go-containerregistry/pkg/v1/random
-github.com/google/go-containerregistry/pkg/internal/retry
+github.com/google/go-containerregistry/pkg/v1/remote
 github.com/google/go-containerregistry/pkg/v1/remote/transport
+github.com/google/go-containerregistry/pkg/v1/stream
+github.com/google/go-containerregistry/pkg/v1/tarball
+github.com/google/go-containerregistry/pkg/v1/types
+github.com/google/go-containerregistry/pkg/v1/v1util
 # github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf
 github.com/google/gofuzz
 # github.com/googleapis/gnostic v0.0.0-20170729233727-0c5108395e2d
@@ -79,13 +79,13 @@ github.com/gregjones/httpcache
 github.com/gregjones/httpcache/diskcache
 # github.com/hashicorp/hcl v1.0.0
 github.com/hashicorp/hcl
-github.com/hashicorp/hcl/hcl/printer
 github.com/hashicorp/hcl/hcl/ast
 github.com/hashicorp/hcl/hcl/parser
-github.com/hashicorp/hcl/hcl/token
-github.com/hashicorp/hcl/json/parser
+github.com/hashicorp/hcl/hcl/printer
 github.com/hashicorp/hcl/hcl/scanner
 github.com/hashicorp/hcl/hcl/strconv
+github.com/hashicorp/hcl/hcl/token
+github.com/hashicorp/hcl/json/parser
 github.com/hashicorp/hcl/json/scanner
 github.com/hashicorp/hcl/json/token
 # github.com/imdario/mergo v0.3.5
@@ -107,8 +107,8 @@ github.com/modern-go/reflect2
 # github.com/opencontainers/go-digest v1.0.0-rc1
 github.com/opencontainers/go-digest
 # github.com/opencontainers/image-spec v1.0.1
-github.com/opencontainers/image-spec/specs-go/v1
 github.com/opencontainers/image-spec/specs-go
+github.com/opencontainers/image-spec/specs-go/v1
 # github.com/pelletier/go-toml v1.2.0
 github.com/pelletier/go-toml
 # github.com/peterbourgon/diskv v2.0.1+incompatible
@@ -131,46 +131,46 @@ github.com/spf13/viper
 # golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2
 golang.org/x/crypto/ssh/terminal
 # golang.org/x/net v0.0.0-20190620200207-3b0461eec859
-golang.org/x/net/http2
+golang.org/x/net/context
 golang.org/x/net/context/ctxhttp
 golang.org/x/net/http/httpguts
+golang.org/x/net/http2
 golang.org/x/net/http2/hpack
 golang.org/x/net/idna
-golang.org/x/net/proxy
-golang.org/x/net/context
 golang.org/x/net/internal/socks
+golang.org/x/net/proxy
 # golang.org/x/sync v0.0.0-20190423024810-112230192c58
 golang.org/x/sync/errgroup
+golang.org/x/sync/semaphore
 # golang.org/x/sys v0.0.0-20190312061237-fead79001313
 golang.org/x/sys/unix
 golang.org/x/sys/windows
 # golang.org/x/text v0.3.0
-golang.org/x/text/transform
-golang.org/x/text/unicode/norm
-golang.org/x/text/encoding/unicode
 golang.org/x/text/encoding
 golang.org/x/text/encoding/internal
 golang.org/x/text/encoding/internal/identifier
+golang.org/x/text/encoding/unicode
 golang.org/x/text/internal/utf8internal
 golang.org/x/text/runes
 golang.org/x/text/secure/bidirule
+golang.org/x/text/transform
 golang.org/x/text/unicode/bidi
+golang.org/x/text/unicode/norm
 # golang.org/x/time v0.0.0-20161028155119-f51c12702a4d
 golang.org/x/time/rate
 # golang.org/x/tools v0.0.0-20190712213246-8b927904ee0d
-golang.org/x/tools/go/packages
 golang.org/x/tools/go/gcexportdata
+golang.org/x/tools/go/internal/gcimporter
 golang.org/x/tools/go/internal/packagesdriver
+golang.org/x/tools/go/packages
+golang.org/x/tools/internal/fastwalk
 golang.org/x/tools/internal/gopathwalk
 golang.org/x/tools/internal/semver
-golang.org/x/tools/go/internal/gcimporter
-golang.org/x/tools/internal/fastwalk
 # gopkg.in/inf.v0 v0.9.0
 gopkg.in/inf.v0
 # gopkg.in/yaml.v2 v2.2.2
 gopkg.in/yaml.v2
 # k8s.io/api v0.0.0-20180904230853-4e7be11eab3f
-k8s.io/api/core/v1
 k8s.io/api/admissionregistration/v1alpha1
 k8s.io/api/admissionregistration/v1beta1
 k8s.io/api/apps/v1
@@ -186,6 +186,7 @@ k8s.io/api/batch/v1
 k8s.io/api/batch/v1beta1
 k8s.io/api/batch/v2alpha1
 k8s.io/api/certificates/v1beta1
+k8s.io/api/core/v1
 k8s.io/api/events/v1beta1
 k8s.io/api/extensions/v1beta1
 k8s.io/api/networking/v1
@@ -200,67 +201,67 @@ k8s.io/api/storage/v1
 k8s.io/api/storage/v1alpha1
 k8s.io/api/storage/v1beta1
 # k8s.io/apimachinery v0.0.0-20180904193909-def12e63c512
-k8s.io/apimachinery/pkg/apis/meta/v1/unstructured
-k8s.io/apimachinery/pkg/labels
-k8s.io/apimachinery/pkg/runtime
-k8s.io/apimachinery/pkg/util/yaml
-k8s.io/apimachinery/pkg/util/wait
+k8s.io/apimachinery/pkg/api/errors
 k8s.io/apimachinery/pkg/api/meta
-k8s.io/apimachinery/pkg/util/json
+k8s.io/apimachinery/pkg/api/resource
 k8s.io/apimachinery/pkg/apis/meta/v1
-k8s.io/apimachinery/pkg/runtime/schema
-k8s.io/apimachinery/pkg/types
-k8s.io/apimachinery/pkg/util/runtime
-k8s.io/apimachinery/pkg/selection
-k8s.io/apimachinery/pkg/util/sets
-k8s.io/apimachinery/pkg/util/validation
+k8s.io/apimachinery/pkg/apis/meta/v1/unstructured
+k8s.io/apimachinery/pkg/apis/meta/v1/unstructured/unstructuredscheme
+k8s.io/apimachinery/pkg/apis/meta/v1beta1
 k8s.io/apimachinery/pkg/conversion
 k8s.io/apimachinery/pkg/conversion/queryparams
-k8s.io/apimachinery/pkg/util/errors
-k8s.io/apimachinery/pkg/apis/meta/v1beta1
-k8s.io/apimachinery/pkg/api/errors
-k8s.io/apimachinery/pkg/runtime/serializer
-k8s.io/apimachinery/pkg/version
-k8s.io/apimachinery/pkg/runtime/serializer/streaming
-k8s.io/apimachinery/pkg/util/net
-k8s.io/apimachinery/pkg/watch
-k8s.io/apimachinery/pkg/apis/meta/v1/unstructured/unstructuredscheme
 k8s.io/apimachinery/pkg/fields
-k8s.io/apimachinery/pkg/api/resource
-k8s.io/apimachinery/pkg/util/intstr
-k8s.io/apimachinery/pkg/util/validation/field
-k8s.io/apimachinery/third_party/forked/golang/reflect
+k8s.io/apimachinery/pkg/labels
+k8s.io/apimachinery/pkg/runtime
+k8s.io/apimachinery/pkg/runtime/schema
+k8s.io/apimachinery/pkg/runtime/serializer
 k8s.io/apimachinery/pkg/runtime/serializer/json
 k8s.io/apimachinery/pkg/runtime/serializer/protobuf
 k8s.io/apimachinery/pkg/runtime/serializer/recognizer
+k8s.io/apimachinery/pkg/runtime/serializer/streaming
 k8s.io/apimachinery/pkg/runtime/serializer/versioning
+k8s.io/apimachinery/pkg/selection
+k8s.io/apimachinery/pkg/types
 k8s.io/apimachinery/pkg/util/clock
+k8s.io/apimachinery/pkg/util/errors
 k8s.io/apimachinery/pkg/util/framer
+k8s.io/apimachinery/pkg/util/intstr
+k8s.io/apimachinery/pkg/util/json
+k8s.io/apimachinery/pkg/util/net
+k8s.io/apimachinery/pkg/util/runtime
+k8s.io/apimachinery/pkg/util/sets
+k8s.io/apimachinery/pkg/util/validation
+k8s.io/apimachinery/pkg/util/validation/field
+k8s.io/apimachinery/pkg/util/wait
+k8s.io/apimachinery/pkg/util/yaml
+k8s.io/apimachinery/pkg/version
+k8s.io/apimachinery/pkg/watch
+k8s.io/apimachinery/third_party/forked/golang/reflect
 # k8s.io/client-go v8.0.0+incompatible
 k8s.io/client-go/discovery
-k8s.io/client-go/rest
-k8s.io/client-go/restmapper
-k8s.io/client-go/tools/clientcmd
-k8s.io/client-go/tools/clientcmd/api
-k8s.io/client-go/util/homedir
 k8s.io/client-go/kubernetes/scheme
+k8s.io/client-go/pkg/apis/clientauthentication
+k8s.io/client-go/pkg/apis/clientauthentication/v1alpha1
+k8s.io/client-go/pkg/apis/clientauthentication/v1beta1
 k8s.io/client-go/pkg/version
 k8s.io/client-go/plugin/pkg/client/auth/exec
+k8s.io/client-go/rest
 k8s.io/client-go/rest/watch
+k8s.io/client-go/restmapper
+k8s.io/client-go/third_party/forked/golang/template
+k8s.io/client-go/tools/auth
+k8s.io/client-go/tools/clientcmd
+k8s.io/client-go/tools/clientcmd/api
+k8s.io/client-go/tools/clientcmd/api/latest
+k8s.io/client-go/tools/clientcmd/api/v1
 k8s.io/client-go/tools/metrics
 k8s.io/client-go/transport
 k8s.io/client-go/util/cert
-k8s.io/client-go/util/flowcontrol
-k8s.io/client-go/tools/auth
-k8s.io/client-go/tools/clientcmd/api/latest
-k8s.io/client-go/util/jsonpath
-k8s.io/client-go/pkg/apis/clientauthentication
-k8s.io/client-go/pkg/apis/clientauthentication/v1alpha1
-k8s.io/client-go/pkg/apis/clientauthentication/v1beta1
 k8s.io/client-go/util/connrotation
+k8s.io/client-go/util/flowcontrol
+k8s.io/client-go/util/homedir
 k8s.io/client-go/util/integer
-k8s.io/client-go/tools/clientcmd/api/v1
-k8s.io/client-go/third_party/forked/golang/template
+k8s.io/client-go/util/jsonpath
 # k8s.io/kubernetes v1.11.8
 k8s.io/kubernetes/pkg/kubectl/genericclioptions
 k8s.io/kubernetes/pkg/kubectl/genericclioptions/printers


Test patch:
diff --git a/pkg/build/limit_test.go b/pkg/build/limit_test.go
new file mode 100644
index 00000000..c26ba56a
--- /dev/null
+++ b/pkg/build/limit_test.go
@@ -0,0 +1,58 @@
+// Copyright 2019 Google LLC All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package build
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	v1 "github.com/google/go-containerregistry/pkg/v1"
+	"golang.org/x/sync/errgroup"
+)
+
+type sleeper struct{}
+
+var _ Interface = (*sleeper)(nil)
+
+// IsSupportedReference implements Interface
+func (r *sleeper) IsSupportedReference(ip string) bool {
+	return true
+}
+
+// Build implements Interface
+func (r *sleeper) Build(ip string) (v1.Image, error) {
+	time.Sleep(50 * time.Millisecond)
+	return nil, nil
+}
+
+func TestLimiter(t *testing.T) {
+	b := NewLimiter(&sleeper{}, 2)
+
+	start := time.Now()
+	g, _ := errgroup.WithContext(context.TODO())
+	for i := 0; i <= 10; i++ {
+		g.Go(func() error {
+			_, _ = b.Build("whatever")
+			return nil
+		})
+	}
+	g.Wait()
+
+	// 50 ms * 10 builds / 2 concurrency = ~250ms
+	if time.Now().Before(start.Add(250 * time.Millisecond)) {
+		t.Fatal("Too many builds")
+	}
+}