cmd/go: using golang.org/x/* from mainland China is awkward with modules

[hellojukay]

What version of Go are you using (go version)?

[jukay@mac-pro]~/log$ go version
go version go1.11 darwin/amd64
[jukay@mac-pro]~/log$

Does this issue reproduce with the latest release?

yes

What operating system and processor architecture are you using (go env)?

go env Output

[jukay@mac-pro]~/log$ go env
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/jukay/Library/Caches/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/jukay/Code/Go"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/Cellar/go/1.11/libexec"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.11/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/jukay/log/go.mod"
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/yp/_44_30ts2_xf43zpz2j72k200000gn/T/go-build712144984=/tmp/go-build -gno-record-gcc-switches -fno-common"
[jukay@mac-pro]~/log$

What did you do?

just compile this project outside GOPATH

[jukay@mac-pro]~/log$ go build

What did you expect to see?

[jukay@mac-pro]~/log$ time go build

real	0m0.316s
user	0m0.195s
sys	0m0.232s

What did you see instead?

[jukay@mac-pro]~/log$ time go build

real	1m0.316s
user	0m0.195s
sys	0m0.232s

[hellojukay]

Unable to understand such a simple code, it took a minute to compile it.

[hellojukay]

when i usego build -v,it not use cache.

[jukay@mac-pro]~/log$ go build -v
Fetching https://golang.org/x/sys?go-get=1
https fetch failed: Get https://golang.org/x/sys?go-get=1: dial tcp 216.239.37.1:443: i/o timeout
Fetching https://golang.org/x/crypto?go-get=1
https fetch failed: Get https://golang.org/x/crypto?go-get=1: dial tcp 216.239.37.1:443: i/o timeout

[mvdan]

If the cache isn't warm, the first build may take longer if it needs to download and build the dependencies. Have you tried running time go build a second time? It should take a few seconds at most.

[hellojukay]

@mvdan I run time go build many times, it cast much time every time.

[mvdan]

Is your GOCACHE directory /Users/jukay/Library/Caches/go-build writeable? Does it contain anything? What does go build -x show?

[mvdan]

Also, note that your go build -v above shows HTTP errors. Are the build succeeding or failing? If the build fails because it can't download some modules or dependencies, they will of course not be cached.

[iand]

Doesn't china block URLs with x in them? Someone mentioned it on go-nuts.

[hellojukay]

@mvdan go build alway success, it just very slow。i can go mod vendor,it create vendor directory,and download all dependencies. this is my source code
https://github.com/hellojukay/vgo-issue

[agnivade]

Hi @hellojukay - to help us investigate the issue faster, it would be great if you can answer the questions asked above. Especially -

What does your GOCACHE directory contain ?

What is the output of go build -x -v ?

Thank you.

[hellojukay]

@agnivade yes ,yestoday i try to upgrade my golang version to 1.11.2, this is output of go build -x -v

[jukay@mac-pro]~/log$ go build -x -v
WORK=/var/folders/yp/_44_30ts2_xf43zpz2j72k200000gn/T/go-build601851662
Fetching https://golang.org/x/sys?go-get=1
https fetch failed: Get https://golang.org/x/sys?go-get=1: dial tcp 216.239.37.1:443: i/o timeout
Fetching https://golang.org/x/crypto?go-get=1
https fetch failed: Get https://golang.org/x/crypto?go-get=1: dial tcp 216.239.37.1:443: i/o timeout
mkdir -p $WORK/b001/
cat >$WORK/b001/importcfg.link << 'EOF' # internal
packagefile main=/Users/jukay/Library/Caches/go-build/27/27043f87ca77211db1b891dd2bc2209ebd069dfe894370d2782c42512cb35969-d
packagefile github.com/sirupsen/logrus=/Users/jukay/Library/Caches/go-build/e7/e7275b538c9195808fa163ca3c56c5d63281712d3d135165cce1aac98cc02bf8-d
packagefile runtime=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/runtime.a
packagefile bufio=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/bufio.a
packagefile bytes=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/bytes.a
packagefile encoding/json=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/encoding/json.a
packagefile fmt=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/fmt.a
packagefile golang.org/x/crypto/ssh/terminal=/Users/jukay/Library/Caches/go-build/0e/0ebfbc4e93e20cd471ded2ecdc73841dc36970144e7957043cdc75f65e0099f8-d
packagefile io=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/io.a
packagefile log=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/log.a
packagefile os=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/os.a
packagefile reflect=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/reflect.a
packagefile sort=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/sort.a
packagefile strings=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/strings.a
packagefile sync=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/sync.a
packagefile sync/atomic=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/sync/atomic.a
packagefile time=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/time.a
packagefile internal/bytealg=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/internal/bytealg.a
packagefile internal/cpu=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/internal/cpu.a
packagefile runtime/internal/atomic=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/runtime/internal/atomic.a
packagefile runtime/internal/sys=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/runtime/internal/sys.a
packagefile errors=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/errors.a
packagefile unicode/utf8=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/unicode/utf8.a
packagefile unicode=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/unicode.a
packagefile encoding=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/encoding.a
packagefile encoding/base64=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/encoding/base64.a
packagefile math=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/math.a
packagefile strconv=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/strconv.a
packagefile unicode/utf16=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/unicode/utf16.a
packagefile golang.org/x/sys/unix=/Users/jukay/Library/Caches/go-build/7f/7f9284a7bb944dc9533f22fbc3ba192e51145ab0792f17b55a151eb6411981f5-d
packagefile internal/poll=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/internal/poll.a
packagefile internal/syscall/unix=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/internal/syscall/unix.a
packagefile internal/testlog=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/internal/testlog.a
packagefile syscall=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/syscall.a
packagefile internal/race=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/internal/race.a
packagefile encoding/binary=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/encoding/binary.a
packagefile math/bits=/usr/local/Cellar/go/1.11.2/libexec/pkg/darwin_amd64/math/bits.a
EOF
mkdir -p $WORK/b001/exe/
cd .
/usr/local/Cellar/go/1.11.2/libexec/pkg/tool/darwin_amd64/link -o $WORK/b001/exe/a.out -importcfg $WORK/b001/importcfg.link -buildmode=exe -buildid=7l5ZuOc-Ol-x9AyQCky7/WlX-HbvTd8yVTtnfYvzf/J45TO0-nMm2qI1TaHJKq/7l5ZuOc-Ol-x9AyQCky7 -extld=clang /Users/jukay/Library/Caches/go-build/27/27043f87ca77211db1b891dd2bc2209ebd069dfe894370d2782c42512cb35969-d
/usr/local/Cellar/go/1.11.2/libexec/pkg/tool/darwin_amd64/buildid -w $WORK/b001/exe/a.out # internal
mv $WORK/b001/exe/a.out main
rm -r $WORK/b001/

[hellojukay]

This is my GOCACHE directory

[jukay@mac-pro]~/log$ go env
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/jukay/Library/Caches/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/jukay/Code/Go"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/Cellar/go/1.11.2/libexec"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.11.2/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/jukay/log/go.mod"
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/yp/_44_30ts2_xf43zpz2j72k200000gn/T/go-build984680892=/tmp/go-build -gno-record-gcc-switches -fno-common"
[jukay@mac-pro]~/log$ cd /Users/jukay/Library/Caches/go-build
[jukay@mac-pro]~/Library/Caches/go-build$ ls
00       14       28       3c       50       64       78       8c       README   b3       c7       db       ef
01       15       29       3d       51       65       79       8d       a0       b4       c8       dc       f0
02       16       2a       3e       52       66       7a       8e       a1       b5       c9       dd       f1
03       17       2b       3f       53       67       7b       8f       a2       b6       ca       de       f2
04       18       2c       40       54       68       7c       90       a3       b7       cb       df       f3
05       19       2d       41       55       69       7d       91       a4       b8       cc       e0       f4
06       1a       2e       42       56       6a       7e       92       a5       b9       cd       e1       f5
07       1b       2f       43       57       6b       7f       93       a6       ba       ce       e2       f6
08       1c       30       44       58       6c       80       94       a7       bb       cf       e3       f7
09       1d       31       45       59       6d       81       95       a8       bc       d0       e4       f8
0a       1e       32       46       5a       6e       82       96       a9       bd       d1       e5       f9
0b       1f       33       47       5b       6f       83       97       aa       be       d2       e6       fa
0c       20       34       48       5c       70       84       98       ab       bf       d3       e7       fb
0d       21       35       49       5d       71       85       99       ac       c0       d4       e8       fc
0e       22       36       4a       5e       72       86       9a       ad       c1       d5       e9       fd
0f       23       37       4b       5f       73       87       9b       ae       c2       d6       ea       fe
10       24       38       4c       60       74       88       9c       af       c3       d7       eb       ff
11       25       39       4d       61       75       89       9d       b0       c4       d8       ec       log.txt
12       26       3a       4e       62       76       8a       9e       b1       c5       d9       ed       trim.txt
13       27       3b       4f       63       77       8b       9f       b2       c6       da       ee
[jukay@mac-pro]~/Library/Caches/go-build$

[jukay@mac-pro]~/Library/Caches/go-build/27$ ls
27043f87ca77211db1b891dd2bc2209ebd069dfe894370d2782c42512cb35969-d
275c760696e3a1f52ee8966821a649f4ee3a720eb6a37639cb7259c82b53825f-a
27afd4f6c43d566036c18b19d4eb17b801039ebb1692781323ce1274baaebbfb-a
27c160e9dd5b2354628a8bb5a4a70aaac2197a1d70ab57c66e8c8e2287bbb3e2-a
[jukay@mac-pro]~/Library/Caches/go-build/27$