[pkg-go] Bug#884406: golang-google-cloud FTBFS and Debci failure: *MockCloudSpanner does not implement spanner.SpannerServer

[Adrian Bunk]

Source: golang-google-cloud
Version: 0.9.0-2
Severity: serious

https://ci.debian.net/packages/g/golang-google-cloud/unstable/amd64/
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/golang-google-cloud.html

...
# cloud.google.com/go/spanner/internal/testutil
src/cloud.google.com/go/spanner/internal/testutil/mockserver.go:238:30: cannot use m (type *MockCloudSpanner) as type spanner.SpannerServer in argument to spanner.RegisterSpannerServer:
	*MockCloudSpanner does not implement spanner.SpannerServer (missing ListSessions method)
...
make[1]: *** [override_dh_auto_build] Error 2