Errors

use_warnings

Time::Duration::Filter, Time::Duration::Locale, Time::Duration::LocaleObject, Time::Duration::en_PIGLATIN

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Fri 14 Apr 2017 02:55:14 PM JST
gpg:                using RSA key F8D0B4E7D2D21191
gpg: Can't check signature: No public key