if err != nil {
		if os.IsNotExist(err) && (testenv.Builder() == "" || runtime.GOOS != "linux") {
			t.Skip(err)
		}
		t.Fatal(err)
	}
	doc := string(data)

	incs := incNonDefaults(t)

	last := ""
	for _, info := range godebugs.All {
		if info.Name <= last {
			t.Errorf("All not sorted: %s then %s", last, info.Name)
		}
		last = info.Name

		if info.Package == "" {