Upstream released Parse-CPAN-Packages-2.40, Fedora delivers 2.38. Please upgrade.
perl-Parse-CPAN-Packages-2.40-1.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/perl-Parse-CPAN-Packages-2.40-1.fc21
perl-Parse-CPAN-Packages-2.40-1.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.