Errors

use_warnings

Math::String::Charset::Wordlist

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 02 Feb 2017 08:57:47 PM JST
gpg:                using RSA key 67263E5D9FAF5EBA
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==