Net-UCP

This distribution doesn't create a directory and extracts its content into this directory. Instead, it creates more than one directories (some of which are probably system-specific hidden files/directories), or it spews its content into the current directory, making it really hard/annoying to remove the unpacked package.

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.

This distribution has dot underscore files which may cause various problems.

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.

MANIFEST does not match the contents of this distribution.

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.

This distribution does not 'use strict;' (or its equivalents) in all of its modules. Note that this is not about the actual strictness of the modules. It's bad if nobody can tell whether the modules are strictly written or not, without reading the source code of your favorite clever module that actually enforces strictness. In other words, it's bad if someone feels the need to add 'use strict' to your modules.

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.

The documentation for this distribution contains syntactic errors in its POD. Note that this metric tests all .pl, .pm and .pod files, even if they are in t/. See 'pod_message' in the dist error view for more info.

Remove the POD errors. You can check for POD errors automatically by including Test::Pod to your test suite.

This distribution uses a module or a dist that's not listed as a prerequisite.

List all used modules in META.yml requires

This distribution has .pm files with inconsistent versions.

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

There is more than one .pm file in the base dir, or the .pm files are not in lib/ directory.

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'.

This distribution does not have a license defined in META.yml.

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.

This distribution does not 'use warnings;' (or its equivalents) in all of its modules. Note that this is not about that your modules actually warn when something bad happens. It's bad if nobody can tell if a module warns or not, without reading the source code of your favorite module that actually enforces warnings. In other words, it's bad if someone feels the need to add 'use warnings' to your modules.

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.

This distribution is not required by another distribution by another author.

Convince / force / bribe another CPAN author to use this distribution.

This distribution does not have a LICENSE or LICENCE file in its root directory.

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