Errors

use_warnings

Object::Stash

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 01 Dec 2011 06:06:38 PM JST
gpg:                using DSA key CEBF81286A2A7D39
gpg: Can't check signature: No public key