There is an ongoing outage on the primary CPAN mirror. It is possible to work around the issue by using MetaCPAN as a mirror.

Wow, you want to help?  That's great!  However, this module probably
isn't a good choice - this module is a place where I (Joelle) try
different Perl constructrs that may have compatibility issues.  By
trying it with this module, I can test this across CPAN Testers.