golangci-lint run fails in firewalled environment

[iavael]

1. golangci-lint has version 1.16.0 built from 97ea1cb on 2019-03-31T19:48:46Z
2. no .golangci.yml
3. go version go1.12.2 linux/amd64

GOARCH="amd64"
GOBIN=""
GOCACHE="/root/.cache/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/go"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/go"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
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 -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build259901938=/tmp/go-build -gno-record-gcc-switches"

$ golangci-lint run -v
INFO [config_reader] Config search paths: [./ /tmp/project /tmp /] 
INFO [lintersdb] Active 10 linters: [deadcode errcheck gosimple govet ineffassign staticcheck structcheck typecheck unused varcheck] 
INFO [lintersdb] Optimized sublinters [staticcheck gosimple unused] into metalinter megacheck 
INFO Memory: 601 samples, avg is 68.9MB, max is 68.9MB 
INFO Execution took 1m0.000512063s                
INFO [loader] Go packages loading at mode load deps types and syntax took 59.951397497s 
ERRO Running error: context loading failed: failed to load program with go/packages: go [list -e -json -compiled -test=true -export=false -deps=true -find=false -- ./...]: signal: killed: go: finding github.com/certifi/gocertifi v0.0.0-20180118203423-deb3ae2ef261
go: finding github.com/kr/pretty v0.1.0
go: finding github.com/hashicorp/go-version v1.1.0
go: finding github.com/satori/go.uuid v1.2.0
go: finding github.com/jackc/pgx v3.1.0+incompatible
go: finding github.com/pkg/errors v0.8.0
go: finding github.com/lib/pq v1.0.0
go: finding github.com/shopspring/decimal v0.0.0-20180709203117-cd690d0c9e24
go: finding <redacted> v0.0.0-20170905141155-2f5c109dcc9b
go: finding github.com/getsentry/raven-go v0.0.0-20180121060056-563b81fc02b7
go: gopkg.in/check.v1@v1.0.0-20180628173108-788fd7840127: unrecognized import path "gopkg.in/check.v1" (https fetch: Get https://gopkg.in/check.v1?go-get=1: dial tcp 35.196.143.184:443: i/o timeout)
go: finding github.com/stretchr/testify v1.3.0
 
ERRO Deadline exceeded: try increase it by passing --deadline option

[iavael]

Looks like golangci-lint handles only the case when network connections are rejected but doesn't expect situation when packets to restricted destinations are dropped by firewall. So it fails to degrade gracefully, hits timeout and exits with error.

[fho]

Any chance that you are using go modules and have vendored dependencies?
This looks like go list is trying to download the 3. party dependencies that are in go.mod.
If this is the case, export GOFLAGS=-mod=vendor might fix it by enforcing that the go tools use the vendored libs.

[iavael]

@fho yep, that was the case. My bad, I had assumptions about golang modules, but blamed golangci-lint. Thanks for the help.

[jirfag]

also, golangci-lint has modules-download-mode option https://github.com/golangci/golangci-lint/blob/master/.golangci.example.yml#L47