}
	for _, e := range tg.env {
		if strings.HasPrefix(e, "GOROOT=") || strings.HasPrefix(e, "GOPATH=") || strings.HasPrefix(e, "GOBIN=") {
			val := e[strings.Index(e, "=")+1:]
			if strings.HasPrefix(val, "testdata") || strings.HasPrefix(val, "./testdata") {
				tg.t.Fatalf("internal testsuite error: call to parallel with testdata in environment (%s)", e)
			}
		}
	}