Pack the distribution with a proper command such as "make dist" and "./Build dist", or use a distribution builder such as Dist::Zilla, Dist::Milla, Minilla.
Run a proper command ("make manifest" or "./Build manifest", maybe with a force option), or use a distribution builder to generate the MANIFEST. Or update MANIFEST manually.
Error: Cannot find MANIFEST in dist.
Remove the POD errors. You can check for POD errors automatically by including Test::Pod to your test suite.
Error: Net-UCP-0.42/lib/Net/UCP.pm -- Around line 2390: '=item' outside of any '=over'Around line 2417: You forgot a '=back' before '=head2' You forgot a '=back' before '=head2'Around line 2473: You forgot a '=back' before '=head2'Around line 2571: You forgot a '=back' before '=head2'
List all used modules in META.yml requires
Add 'use strict' (or its equivalents) to all modules, or convince us that your favorite module is well-known enough and people can easily see the modules are strictly written.
Split the distribution, or fix the version numbers to make them consistent (use the highest version number to avoid version downgrade).
Add a META.json to the distribution. Your buildtool should be able to autogenerate it.
Define the license if you are using in Build.PL. If you are using MakeMaker (Makefile.PL) you should upgrade to ExtUtils::MakeMaker version 6.31.
If you use Mac OS X, set COPYFILE_DISABLE (for OS 10.5 and better) or COPY_EXTENDED_ATTRIBUTES_DISABLE (for OS 10.4) environmental variable to true to exclude dot underscore files from a distribution.
Ask the owner of the distribution (the one who released it first, or the one who is designated in x_authority) to give you a (co-)maintainer's permission.
Move your *.pm files in a directory named 'lib'. The directory structure should look like 'lib/Your/Module.pm' for a module named 'Your::Module'. If you need to provide additional files, e.g. for testing, that should not be considered for Kwalitee, then you should look at the 'provides' map in META.yml to limit the files scanned; or use the 'no_index' map to exclude parts of the distribution.
Error: Net-UCP-0.42/inc/ExtUtils/AutoInstall.pm, Net-UCP-0.42/inc/ExtUtils/._AutoInstall.pm, Net-UCP-0.42/lib/Net/UCP.pm
Add 'use warnings' (or its equivalents) to all modules (this will require perl > 5.6), or convince us that your favorite module is well-known enough and people can easily see the modules warn when something bad happens.
Error: ExtUtils::AutoInstall, Net-UCP-0.42::inc::ExtUtils::._AutoInstall
This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.