Errors

meta_yml_conforms_to_known_spec

License 'CC0' is invalid (license) [Validation: 1.4]

use_warnings

Module::Signature

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Sun 28 Mar 2010 11:47:49 AM JST
gpg:                using DSA key 742F2A428E635A5E
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==