Errors

use_strict

Set::Object::Weak

use_warnings

Set::Object, Set::Object::Weak

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Thu 26 Dec 2013 10:55:44 AM JST
gpg:                using DSA key 9A6D92628FFDC942
gpg: Can't check signature: No public key