|meta json conforms to known spec||
META.json does not conform to any recognised META Spec.
Take a look at the META.json Spec at http://module-build.sourceforge.net/META-spec-v1.4.html (for version 1.4) or http://search.cpan.org/perldoc?CPAN::Meta::Spec (for version 2), and change your META.json accordingly.
|prereq matches use||
This distribution uses a module or a dist that's not listed as a prerequisite.
List all used modules in META.yml requires
|meta yml declares perl version||
This distribution does not declare the minimum perl version in META.yml.
|meta yml has license||
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.
|no unauthorized packages||
Apparently this distribution has unauthorized packages now.
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.
These fails are not serious and don't affect your Kwalitee scores at all.
|build prereq matches use||
This distribution uses a module or a dist in its test suite that's not listed as a build prerequisite.
List all modules used in the test suite in META.yml build_requires