item_impl holds an Option<> to the trait ref, not a list of trait refs. Therefore, we should not iterate over it.
fix uninstall target with configurable rustlib directory
rustdoc: Don't strip empty modules with documentation

Closes #11443
doc: build the docs for librustuv

Closes #11444
rustdoc: Get --version working

Closes #11421
rustdoc: Don't show private modules
Remove re-exports of std::io::stdio::{print, println} in the prelude.

The `print!` and `println!` macros are now the preferred method of printing, and so there is no reason to export the `stdio` functions in the prelude. The functions have also been replaced by their macro counterparts in the tutorial and other documentation so that newcomers don't get confused about what they should be using.
auto merge of #11415 : nick29581/rust/visit_trait_option, r=alexcrichton

...Therefore, we should not iterate over it.
auto merge of #11416 : bjz/rust/remove-print-fns, r=alexcrichton

The `print!` and `println!` macros are now the preferred method of printing, and so there is no reason to export the `stdio` functions in the prelude. The functions have also been replaced by their macro counterparts in the tutorial and other documentation so that newcomers don't get confused about what they should be using.
librustc: Check restrictions on all subcomponents of a path when moving
it. r=nikomatsakis
Re-implement --help in rustpkg

Fixes #11423
auto merge of #11459 : tedhorst/rust/uninstall_rustlib, r=alexcrichton

Update the uninstall target with the configurable rust lib directory name.

cc @jhasse
extra::workcache: Remove unused Logger
auto merge of #11465 : pcwalton/rust/borrow-check-bug, r=pcwalton

it. r=nikomatsakis
auto merge of #11466 : eminence/rust/fix_rustpkg_help, r=brson

It appears --help got lost in aa50ebd03ed1d1f698d0d275f9570ef53e720831

Fixes #11423
rustdoc: Don't show a fields header if there are none
auto merge of #11461 : alexcrichton/rust/rustdoc-fixes, r=brson

See the commits.
auto merge of #11468 : klutzy/rust/workcache-cleanup, r=alexcrichton