return 0, 0, fmt.Errorf("error retrieving additional ids for user %q", kubeletUser)
	}
	outGids, err := exec.Command(cmd, "-g", kubeletUser).Output()
	if err != nil {
		return 0, 0, fmt.Errorf("error retrieving additional gids for user %q", kubeletUser)
	}
	if string(outUids) != string(outGids) {
		return 0, 0, fmt.Errorf("mismatched subuids and subgids for user %q", kubeletUser)
	}
	return parseGetSubIdsOutput(string(outUids))
}