Remove the POD errors. You can check for POD errors automatically by including Test::Pod to your test suite.
Error: Clutch-0.05/lib/Clutch/Worker.pm -- Around line 277: =over without closing =back
Add a META.json to the distribution. Your buildtool should be able to autogenerate it.
This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.
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.