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: namespace::clean::xs, namespace::clean::xs::all

List all modules used in the test suite in META.yml test_requires

Error:

• Test::LeakTrace

Fix the version numbers so that version::is_lax($version) returns true.

Error:

• lib/namespace/clean/xs/all.pm: HASH(0x55607c9c9a08)

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.