If you are using Build.PL define the {requires}{perl} = VERSION field. If you are using MakeMaker (Makefile.PL) you should upgrade ExtUtils::MakeMaker to 6.48 and use MIN_PERL_VERSION parameter. Perl::MinimumVersion can help you determine which version of Perl your module needs.

Add a META.json to the distribution. Your buildtool should be able to autogenerate it.

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.

Error:

• MooseX::AttributeHelpers
• MooseX::AttributeHelpers::Bool
• MooseX::AttributeHelpers::Collection::Array
• MooseX::AttributeHelpers::Collection::Bag
• MooseX::AttributeHelpers::Collection::Hash
• MooseX::AttributeHelpers::Collection::ImmutableHash
• MooseX::AttributeHelpers::Collection::List
• MooseX::AttributeHelpers::Counter
• MooseX::AttributeHelpers::Meta::Method::Curried
• MooseX::AttributeHelpers::Meta::Method::Provided
• MooseX::AttributeHelpers::MethodProvider::Array
• MooseX::AttributeHelpers::MethodProvider::Bag
• MooseX::AttributeHelpers::MethodProvider::Bool
• MooseX::AttributeHelpers::MethodProvider::Counter
• MooseX::AttributeHelpers::MethodProvider::Hash
• MooseX::AttributeHelpers::MethodProvider::ImmutableHash
• MooseX::AttributeHelpers::MethodProvider::List
• MooseX::AttributeHelpers::Number
• MooseX::AttributeHelpers::Trait::Base
• MooseX::AttributeHelpers::Trait::Bool
• MooseX::AttributeHelpers::Trait::Collection
• MooseX::AttributeHelpers::Trait::Collection::Array
• MooseX::AttributeHelpers::Trait::Collection::Bag
• MooseX::AttributeHelpers::Trait::Collection::Hash
• MooseX::AttributeHelpers::Trait::Collection::ImmutableHash
• MooseX::AttributeHelpers::Trait::Collection::List
• MooseX::AttributeHelpers::Trait::Counter
• MooseX::AttributeHelpers::Trait::Number
• MooseX::AttributeHelpers::Trait::String

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

Error: 0.17,0.18_01

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.

Add a 'repository' resource to the META.yml via 'meta_add' accessor (for Module::Build) or META_ADD parameter (for ExtUtils::MakeMaker).

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