src/cmd/go/testdata/script/mod_import_mod.txt - go.git - Git at Google

 # Test that GOPATH/pkg/mod is excluded
 env GO111MODULE=off
 ! go list mod/foo
 stderr 'disallowed import path'

 -- mod/foo/foo.go --
 package foo
	# Test that GOPATH/pkg/mod is excluded
	env GO111MODULE=off
	! go list mod/foo
	stderr 'disallowed import path'

	-- mod/foo/foo.go --
	package foo