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 'use warnings' (or its equivalents) to all modules, or convince us that your favorite module is well-known enough and people can easily see the modules warn when something bad happens.

Error: HTTP::OAI, HTTP::OAI::Debug, HTTP::OAI::Error, HTTP::OAI::GetRecord, HTTP::OAI::Harvester, HTTP::OAI::Header, HTTP::OAI::Identify, HTTP::OAI::ListIdentifiers, HTTP::OAI::ListMetadataFormats, HTTP::OAI::ListRecords, HTTP::OAI::ListSets, HTTP::OAI::MemberMixin, HTTP::OAI::Metadata, HTTP::OAI::Metadata::METS, HTTP::OAI::Metadata::OAI_DC, HTTP::OAI::MetadataFormat, HTTP::OAI::PartialList, HTTP::OAI::Record, HTTP::OAI::Response, HTTP::OAI::ResumptionToken, HTTP::OAI::SAX::Base, HTTP::OAI::SAX::Driver, HTTP::OAI::SAX::Text, HTTP::OAI::SAX::Trace, HTTP::OAI::Set, HTTP::OAI::Verb

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.