Some libraries will always have unexpected end of JSON input errors

[fitzix]

Most of the vscode goalng extended dependencies will get this error, such as github.com/mdempsky/gocode, golang.org/x/tools/cmd/guru, golang.org/x/tools/cmd/gopls.

go get -v golang.org/x/tools/cmd/gopls
go: finding golang.org/x/tools/cmd/gopls latest
go: finding golang.org/x/tools/cmd latest
go: finding golang.org latest
go: finding golang.org/x/tools latest
go: finding golang.org/x latest
go get golang.org/x/tools/cmd/gopls: module golang.org/x/tools/cmd: unexpected end of JSON input

[oiooj]

@fitzix What's your GOPROXY env ? Which commit version you use if you build by yourself?

[fitzix]

GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/fitz/Library/Caches/go-build"
GOENV="/Users/fitz/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/fitz/.go"
GOPRIVATE=""
GOPROXY="https://goproxy.io,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/6w/2ynsrj4d4fqd7vxrf1gmkq4w0000gn/T/go-build692195248=/tmp/go-build -gno-record-gcc-switches -fno-common"

[fitzix]

It is weird, remove GOPROXY and use the default GOPROXY="https://proxy.golang.org,direct", no error.

go get -v golang.org/x/tools/cmd/gopls
get "golang.org/x/tools/cmd/gopls": found meta tag get.metaImport{Prefix:"golang.org/x/tools", VCS:"git", RepoRoot:"https://go.googlesource.com/tools"} at //golang.org/x/tools/cmd/gopls?go-get=1
get "golang.org/x/tools/cmd/gopls": verifying non-authoritative meta tag
go: finding golang.org/x/tools/cmd/gopls latest
go: finding golang.org/x/tools latest

[oiooj]

I can not reproduce your issue using goproxy.io , log:

Sosara@MBA:/tmp$ go get -v golang.org/x/tools/cmd/gopls
go: finding golang.org/x/tools/cmd/gopls latest
go: finding golang.org/x latest
go: finding golang.org latest
go: finding golang.org/x/tools/cmd latest
go: finding golang.org/x/tools latest
go: downloading golang.org/x/tools v0.0.0-20190606050223-4d9ae51c2468
go: extracting golang.org/x/tools v0.0.0-20190606050223-4d9ae51c2468
go: downloading golang.org/x/sync v0.0.0-20190423024810-112230192c58
go: extracting golang.org/x/sync v0.0.0-20190423024810-112230192c58
go: finding golang.org/x/sync v0.0.0-20190423024810-112230192c58

[fitzix]

This problem will only appear on 1.13，may be caused by some bugs in 1.13beta1.

[oiooj]

Yes, I can reproduce with go1.13beta1

# go version
go version go1.13beta1 linux/amd64

# go get -v golang.org/x/tools/cmd/gopls
go: finding golang.org/x/tools/cmd/gopls latest
go: finding golang.org latest
go: finding golang.org/x latest
go: finding golang.org/x/tools/cmd latest
go: finding golang.org/x/tools latest
go get golang.org/x/tools/cmd/gopls: module golang.org/x/tools/cmd: unexpected end of JSON input

But you can use go get -v golang.org/x/tools.

[oiooj]

@fitzix I fixed this issue and deployed online, can you help me to confirm this bug is fixed?

[fitzix]

Sure, I tested the dependency of the vscode go plugin, it works fine now, thank u.