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: Module::AutoInstall, Module::Install, Module::Install::Admin, Module::Install::Admin::Bundle, Module::Install::Admin::Compiler, Module::Install::Admin::Find, Module::Install::Admin::Include, Module::Install::Admin::Makefile, Module::Install::Admin::Manifest, Module::Install::Admin::Metadata, Module::Install::Admin::ScanDeps, Module::Install::Admin::WriteAll, Module::Install::AutoInstall, Module::Install::Base, Module::Install::Bundle, Module::Install::Can, Module::Install::Compiler, Module::Install::Deprecated, Module::Install::External, Module::Install::Fetch, Module::Install::Include, Module::Install::Inline, Module::Install::MakeMaker, Module::Install::Makefile, Module::Install::Metadata, Module::Install::PAR, Module::Install::Run, Module::Install::Scripts, Module::Install::Share, Module::Install::Win32, Module::Install::With, Module::Install::WriteAll, inc::Module::Install

Add all modules contained in this distribution to the META.yml field 'provides'. Module::Build or Dist::Zilla::Plugin::MetaProvides do this automatically for you.

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