Add 'use warnings' (or its equivalents) to all modules, or convince us that your favorite module is well-known enough and people can easily see the modules warn when something bad happens.

Error: P4::OO, P4::OO::Branch, P4::OO::BranchSet, P4::OO::Change, P4::OO::ChangeSet, P4::OO::Changelist, P4::OO::ChangelistSet, P4::OO::Client, P4::OO::ClientSet, P4::OO::Depot, P4::OO::DepotSet, P4::OO::File, P4::OO::FileSet, P4::OO::Group, P4::OO::GroupSet, P4::OO::Job, P4::OO::JobSet, P4::OO::Label, P4::OO::LabelSet, P4::OO::User, P4::OO::UserSet, P4::OO::Workspace, P4::OO::WorkspaceSet

Add a 'repository' resource to the META.yml via 'meta_add' accessor (for Module::Build) or META_ADD parameter (for ExtUtils::MakeMaker).

This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.