Code change:
<!-- Please use this template while reporting a bug and provide as much info as possible. Not doing so may result in your bug not being addressed in a timely manner. Thanks! If the matter is security related, please disclose it privately via --What happened: Below k8s UT fail when run with master-golang. TestCheckpointStateRestore/RestorecheckpointwithinvalidJSON error:=== RUN TestCheckpointStateRestore/RestorecheckpointwithinvalidJSON I1124 05:38:14. ] [cpumanager] initializing new in-memory state store unexpected error while creatng checkpointState: could not restore state from checkpoint: json: unexpected end of JSON input, please drain this node and delete the CPU manager checkpoint file "/tmp/cpumanagerstatetest479660663/cpumanagercheckpointtest" before restarting Kubelet --- FAIL: TestCheckpointStateRestore/RestorecheckpointwithinvalidJSON (0.00s) TestStrategicMergePatchInvalid error:=== RUN TestStrategicMergePatchInvalid expected "invalid character 'b' looking for beginning of value", got "json: invalid character 'b' looking for beginning of value" --- FAIL: TestStrategicMergePatchInvalid (0.00s) TestJSONPatch error:=== RUN TestJSONPatch invalid-syntax: expected error invalid character 'i' looking for beginning of value, but got json: invalid character 'i' looking for beginning of value --- FAIL: TestJSONPatch (0.00s) TestV4ErrorDecoder expandless error:=== RUN TestV4ErrorDecoder wrong error for message "{": want="error stream protocol error: unexpected end of JSON input in "{"", got="error stream protocol error: json: unexpected end of JSON input in "{"" --- FAIL: TestV4ErrorDecoder (0.00s What you expected to happen: The tests should pass with no error. How to reproduce it (as minimally and precisely as possible): a stable version of golang installed master go from upstream git clone cd go/src cd ../.. cp -r ./go /usr/local export PATH=/usr/local/go/bin:$PATH kubernetes repo and run the unit tests. () Anything else we need to know?: These failures are occurring due to mismatch of error messages between upstream go and the k8s tests. There is an addition "json:" prefix to SyntaxError messages after this below commit: Environment: Kubernetes version (use ): latest source code from upstream Cloud provider or hardware configuration: OS (e.g: ): "CentOS Linux 8 (Core)" Kernel (e.g. ): Linux rajalakshmi-workspace 4.18.0-193.19.1.el82.ppc64le SMP Mon Sep 14 14:48:04 UTC 2020 ppc64le ppc64le ppc64le GNU/Linux Install tools: [root go]# go version go version devel + Fri Nov 20 00:54:43 2020 +0000 linux/ppc64le [root go]# Network plugin and version (if this is a network-related bug): Others:
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/sig testing
will fix it in Go 1.16 as release-blocker.
I would fix the test here to be more tolerant. exact string matches on error messages aren't really an API… I would not expect that to block the golang release
Agree too, we can think about having a substring match to avoid these issues instead!
/assign Lets see if we can fix this in the k8s tests

Related discussion:
text: }, { message: "{", <del> err:     "error stream protocol error: unexpected end of JSON input in "{"", </del> <ins> err:     "unexpected end of JSON input in "{"", </ins> }, { message: `{"status": "Success" }`,