[pkg-go] Bug#877006: golang-gopkg-gcfg.v1 FTBFS: cannot find package "gopkg.in/warnings.v0"

[Adrian Bunk]

Source: golang-gopkg-gcfg.v1
Version: 1.2.0-1
Severity: serious

https://buildd.debian.org/status/fetch.php?pkg=golang-gopkg-gcfg.v1&arch=all&ver=1.2.0-1&stamp=1506504400&raw=0

...
   dh_auto_build -i -O--buildsystem=golang -O--builddirectory=_build
	cd _build && go install -gcflags=\"-trimpath=/<<PKGBUILDDIR>>/_build/src\" -asmflags=\"-trimpath=/<<PKGBUILDDIR>>/_build/src\" -v -p 1 gopkg.in/gcfg.v1 gopkg.in/gcfg.v1/scanner gopkg.in/gcfg.v1/token gopkg.in/gcfg.v1/types
src/gopkg.in/gcfg.v1/errors.go:4:2: cannot find package "gopkg.in/warnings.v0" in any of:
	/usr/lib/go-1.9/src/gopkg.in/warnings.v0 (from $GOROOT)
	/<<PKGBUILDDIR>>/_build/src/gopkg.in/warnings.v0 (from $GOPATH)
dh_auto_build: cd _build && go install -gcflags=\"-trimpath=/<<PKGBUILDDIR>>/_build/src\" -asmflags=\"-trimpath=/<<PKGBUILDDIR>>/_build/src\" -v -p 1 gopkg.in/gcfg.v1 gopkg.in/gcfg.v1/scanner gopkg.in/gcfg.v1/token gopkg.in/gcfg.v1/types returned exit code 1
debian/rules:11: recipe for target 'build-indep' failed
make: *** [build-indep] Error 1