Errors

use_warnings

List::Util, List::Util::XS, Scalar::Util

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Wed 15 Sep 2010 12:11:11 AM JST
gpg:                using DSA key 47404BE206D8C374
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==