Under maintenance.

Most probably CPANTS databases are being regenerated from scratch due to major changes in Kwalitee metrics or updates of relevant modules/perl. Usually this maintenance takes about a day or two, and some of the information may be old or missing tentatively. Sorry for the inconvenience.

Errors

proper_libs
Instance/Instance.pm
use_warnings
AI::DecisionTree, AI::DecisionTree::Instance
valid_signature
Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Sat 03 Mar 2012 12:29:19 PM JST
gpg:                using DSA key 82BBCC04B7EF9476
gpg: Can't check signature: No public key