There is a typo in the URL of the dev-perl/MIME-tools-5.143 package, you're missing a 'l'. Here is the correct URL: http://search.cpan.org/~dskoll/MIME-tools-5.413/ or http://search.cpan.org/~dskoll/${P}/ for the ebuild Reproducible: Always Steps to Reproduce: 1. 2. 3.
got it - homepage url typo fixed. thanks!