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: Sidef, Sidef::Convert::Convert, Sidef::Deparse::Perl, Sidef::Deparse::Sidef, Sidef::Eval::Eval, Sidef::Exec, Sidef::Math::Math, Sidef::Module::Caller, Sidef::Module::Func, Sidef::Module::Require, Sidef::Object::Object, Sidef::Object::Unary, Sidef::Optimizer, Sidef::Parser, Sidef::Perl::Perl, Sidef::Sys::SIG, Sidef::Sys::Sys, Sidef::Time::Gmtime, Sidef::Time::Localtime, Sidef::Time::Time, Sidef::Types::Array::Array, Sidef::Types::Array::HCArray, Sidef::Types::Array::List, Sidef::Types::Array::MultiArray, Sidef::Types::Array::Pair, Sidef::Types::Array::Range, Sidef::Types::Black::Hole, Sidef::Types::Block::Break, Sidef::Types::Block::Code, Sidef::Types::Block::Continue, Sidef::Types::Block::Do, Sidef::Types::Block::For, Sidef::Types::Block::Fork, Sidef::Types::Block::Given, Sidef::Types::Block::Next, Sidef::Types::Block::Return, Sidef::Types::Block::Switch, Sidef::Types::Block::Try, Sidef::Types::Bool::Bool, Sidef::Types::Bool::If, Sidef::Types::Bool::Ternary, Sidef::Types::Bool::While, Sidef::Types::Byte::Byte, Sidef::Types::Byte::Bytes, Sidef::Types::Char::Char, Sidef::Types::Char::Chars, Sidef::Types::Glob::Backtick, Sidef::Types::Glob::Dir, Sidef::Types::Glob::DirHandle, Sidef::Types::Glob::Fcntl, Sidef::Types::Glob::File, Sidef::Types::Glob::FileHandle, Sidef::Types::Glob::Pipe, Sidef::Types::Glob::PipeHandle, Sidef::Types::Glob::Socket, Sidef::Types::Glob::SocketHandle, Sidef::Types::Glob::Stat, Sidef::Types::Hash::Hash, Sidef::Types::Nil::Nil, Sidef::Types::Number::Complex, Sidef::Types::Number::Number, Sidef::Types::Regex::Matches, Sidef::Types::Regex::Regex, Sidef::Types::String::String, Sidef::Variable::Class, Sidef::Variable::ClassInit, Sidef::Variable::ClassVar, Sidef::Variable::Init, Sidef::Variable::InitMy, Sidef::Variable::LazyMethod, Sidef::Variable::Magic, Sidef::Variable::My, Sidef::Variable::Ref, Sidef::Variable::Struct, Sidef::Variable::Variable

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.