Errors

use_warnings

DateTime::Format::W3CDTF

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Mon 02 Nov 2009 07:04:24 AM JST
gpg:                using DSA key 220302B15F2ABD12
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==