If you are using Build.PL define the {requires}{perl} = VERSION field. If you are using MakeMaker (Makefile.PL) you should upgrade ExtUtils::MakeMaker to 6.48 and use MIN_PERL_VERSION parameter. Perl::MinimumVersion can help you determine which version of Perl your module needs.

Add a META.json to the distribution. Your buildtool should be able to autogenerate it.

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: POE, POE::Component, POE::Component::Client::TCP, POE::Component::Server::TCP, POE::Driver, POE::Driver::SysRW, POE::Filter, POE::Filter::Block, POE::Filter::Grep, POE::Filter::HTTPD, POE::Filter::Line, POE::Filter::Map, POE::Filter::RecordBlock, POE::Filter::Reference, POE::Filter::Stackable, POE::Filter::Stream, POE::Kernel, POE::Loop, POE::Loop::Event, POE::Loop::Gtk, POE::Loop::IO_Poll, POE::Loop::PerlSignals, POE::Loop::Select, POE::Loop::Tk, POE::Loop::TkActiveState, POE::Loop::TkCommon, POE::NFA, POE::Pipe, POE::Pipe::OneWay, POE::Pipe::TwoWay, POE::Queue, POE::Queue::Array, POE::Resource, POE::Resource::Aliases, POE::Resource::Events, POE::Resource::Extrefs, POE::Resource::FileHandles, POE::Resource::SIDs, POE::Resource::Sessions, POE::Resource::Signals, POE::Resource::Statistics, POE::Resources, POE::Session, POE::Wheel, POE::Wheel::Curses, POE::Wheel::FollowTail, POE::Wheel::ListenAccept, POE::Wheel::ReadWrite, POE::Wheel::Run, POE::Wheel::SocketFactory

Split the distribution, or fix the version numbers to make them consistent (use the highest version number to avoid version downgrade).

Error: 1.003_04,1.2447,1.2450,1.2454,1.2456,1.2470,1.2478,1.2485

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.