Errors

use_warnings

Authen::Krb5

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 30 Nov 2017 12:12:32 AM JST
gpg:                using RSA key 5D9792DC44F63C8013A09E5416881290025B9094
gpg: Can't check signature: No public key