This bug is part of the non-responsive maintainer procedure for besser82, following https://docs.fedoraproject.org/en-US/fesco/Policy_for_nonresponsive_package_maintainers/. Please respond if you are still active in Fedora and want to maintain rubygem-mercenary. Bug 1792666, a simple version update, has stood unfixed for over an year.
Contact made through FESCo issue https://pagure.io/fesco/issue/2615 and solution found. Closing this issue now.