cmd/go: test, list etc. fails when run in parallel on Windows

[bep]

The workaround is straightforward (serialize build), but I think this deserves an issue as 1) this worked fine in Go 1.10 and 2) people in the same boat as me can get something to search for when scratching their head

Also note that this works fine on macOS and Linux.

Environment:

go version
go version go1.11 windows/amd64
go env
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\appveyor\AppData\Local\go-build
set GOEXE=.exe
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=C:\GOPATH\
set GOPROXY=
set GORACE=
set GOROOT=C:\go
set GOTMPDIR=
set GOTOOLDIR=C:\go\pkg\tool\windows_amd64
set GCCGO=gccgo
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\appveyor\AppData\Local\Temp\1\go-build440396294=/tmp/go-build -gno-record-gcc-switches

2. The commit that fixed the build:

gohugoio/hugo@ea8ef57

3. Extract of the error log:

# github.com/gohugoio/hugo/common/maps
bufferpool\bufpool_test.go:17:2: unknown import path "github.com/stretchr/testify/assert": target directory C:\GOPATH\pkg\mod\github.com\stretchr\testify@v1.2.2 exists and is not empty
FAIL	github.com/gohugoio/hugo/common/maps [setup failed]
# github.com/gohugoio/hugo/common/math
package github.com/gohugoio/hugo/common/math (test)
	imports github.com/alecthomas/assert
	imports github.com/alecthomas/repr: unknown import path "github.com/alecthomas/repr": target directory C:\GOPATH\pkg\mod\github.com\alecthomas\repr@v0.0.0-20180724025338-ead21651dde3 exists and is not empty
FAIL	github.com/gohugoio/hugo/common/math [setup failed]
# github.com/gohugoio/hugo/common/types
cache\partitioned_lazy_cache_test.go:21:2: unknown import path "github.com/stretchr/testify/require": target directory C:\GOPATH\pkg\mod\github.com\stretchr\testify@v1.2.2 exists and is not empty
FAIL	github.com/gohugoio/hugo/common/types [setup failed]
# github.com/gohugoio/hugo/config
cache\partitioned_lazy_cache_test.go:21:2: unknown import path "github.com/stretchr/testify/require": target directory C:\GOPATH\pkg\mod\github.com\stretchr\testify@v1.2.2 exists and is not empty
FAIL	github.com/gohugoio/hugo/config [setup failed]
# github.com/gohugoio/hugo/config/privacy
cache\partitioned_lazy_cache_test.go:21:2: unknown import path "github.com/stretchr/testify/require": target directory C:\GOPATH\pkg\mod\github.com\stretchr\testify@v1.2.2 exists and is not empty
FAIL	github.com/gohugoio/hugo/config/privacy [setup failed]
# github.com/gohugoio/hugo/config/services
cache\partitioned_lazy_cache_test.go:21:2: unknown import path "github.com/stretchr/testify/require": target directory C:\GOPATH\pkg\mod\github.com\stretchr\testify@v1.2.2 exists and is not empty
FAIL	github.com/gohugoio/hugo/config/services [setup failed]
# github.com/gohugoio/hugo/create
cache\partitioned_lazy_cache_test.go:21:2: unknown import path "github.com/stretchr/testify/require": target directory C:\GOPATH\pkg\mod\github.com\stretchr\testify@v1.2.2 exists and is not empty

/cc @natefinch

[bcmills]

Please provide more detail. I don't see answers for the two most important questions from the issue template:

What did you do?

What did you expect to see?

[bep]

Please provide more detail. I don't see answers for the two most important questions from the issue template:

It's in there if you read more carefully. I have spent enough time on this issue. Use my issue report to improve your software/documentation, or don't.

[bep]

I have another case, which is more problematic (and I think a more common problem), now in a Linux container on CircleCI:

See error log below.

• Is building s3deploy in parallel with goreleaser
• Workaround is to serialize builds: https://github.com/bep/s3deploy/blob/master/.circleci/config.yml#L11

da00d00bdef65874ff644eaa26: exit status 128:
	fatal: cannot copy '/usr/share/git-core/templates/hooks/update.sample' to '/go/pkg/mod/cache/vcs/cb1953cbdfd14fc2ffce4dfd06487e8d5a0c96da00d00bdef65874ff644eaa26/hooks/update.sample': File exists
go: github.com/dsnet/golib@v0.0.0-20171103203638-1ea166775780: git init --bare in /go/pkg/mod/cache/vcs/e56cb0fb3504244c08f9270d26097e67273a5d49f0367a918d5322d12df3a9b8: exit status 128:
	error: could not lock config file /go/pkg/mod/cache/vcs/e56cb0fb3504244c08f9270d26097e67273a5d49f0367a918d5322d12df3a9b8/config: No such file or directory
	fatal: could not set 'core.symlinks' to 'false'
go: golang.org/x/sync@v0.0.0-20180314180146-1d60e4601c6f: git init --bare in /go/pkg/mod/cache/vcs/55179c5d8c4db2eaed9fae4682d4c84a1fd3612df666b372bef3bbb997c9601f: exit status 128:
	error: could not lock config file /go/pkg/mod/cache/vcs/55179c5d8c4db2eaed9fae4682d4c84a1fd3612df666b372bef3bbb997c9601f/config: File exists
	fatal: could not set 'core.repositoryformatversion' to '0'
go: golang.org/x/net@v0.0.0-20180826012351-8a410e7b638d: git init --bare in /go/pkg/mod/cache/vcs/4a22365141bc4eea5d5ac4a1395e653f2669485db75ef119e7bbec8e19b12a21: exit status 128:
	error: could not lock config file /go/pkg/mod/cache/vcs/4a22365141bc4eea5d5ac4a1395e653f2669485db75ef119e7bbec8e19b12a21/config: File exists
	fatal: could not set 'core.repositoryformatversion' to '0'
go: gopkg.in/yaml.v2@v2.2.1: git init --bare in /go/pkg/mod/cache/vcs/4f939cf8921e8662ef2d8cf78b0db3bcacccda0d79c9e1b4cef06c640b4a8cef: exit status 128:
	error: could not lock config file /go/pkg/mod/cache/vcs/4f939cf8921e8662ef2d8cf78b0db3bcacccda0d79c9e1b4cef06c640b4a8cef/config: File exists
	fatal: could not set 'core.repositoryformatversion' to '0'
go: golang.org/x/text@v0.3.0: git remote add origin https://go.googlesource.com/text in /go/pkg/mod/cache/vcs/5b03666c2d7b526129bad48c5cea095aad8b83badc1daa202e7b0279e3a5d861: exit status 128:
	error: could not lock config file config: File exists
	fatal: could not set 'remote.origin.url' to 'https://go.googlesource.com/text'
go: error loading module requirements

/cc @caarlos0

[bcmills]

Which go commands were you trying to run in parallel, and which of those failed?
Did you run go mod tidy and/or go mod download beforehand?

[bep]

@bcmills the links above are to the actual scripts with reference to Docker image used etc. For the last one, I suspect a go mod download before starting the parallel builds would have done the trick.

[caarlos0]

@bep yes, parallel go mod download will likely not work... this is a WIP on GoReleaser side as well: goreleaser/goreleaser#779

[bcmills]

Closing as a duplicate of #26794.