Errors

use_warnings

Math::BigRat

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 02 Jan 2005 12:28:08 AM JST
gpg:                using RSA key 770B3C4393B84C15
gpg: WARNING: signature digest conflict in message
gpg: Can't check signature: General error
==> BAD/TAMPERED signature detected! <==