The distribution hasn't got a Changelog (named something like m/^chang(es?|log)|history$/i. A Changelog helps people decide if they want to upgrade to a new version.
Add a Changelog (best named 'Changes') to the distribution. It should list at least major changes implemented in newer versions.
|buildtool not executable||
The build tool (Build.PL/Makefile.PL) is executable. This is bad because you should specify which perl you want to use while installing.
Change the permissions of Build.PL/Makefile.PL to not-executable.
|has human readable license||
This distribution does not have a license defined in the documentation or in a file called LICENSE
Add a section called "LICENSE" to the documentation, or add a file named LICENSE to the distribution.
|has license in source file||
Does not have license information in any of its source files
Add =head1 LICENSE and the text of the license to the main module in your code.
|metayml declares perl version||
This distribution does not declare the minimum perl version in META.yml.
|has known license in source file||
Does not have license information in any of its source files, or the information is not recognized by Software::License
Add =head1 LICENSE and/or the proper text of the well-known license to the main module in your code.
|has separate license file||
This distribution does not have a LICENSE or LICENCE file in its root directory.