Your package rubygem-mono_logger failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=7002605 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 906244 [details] build.log
Created attachment 906245 [details] root.log
Created attachment 906246 [details] state.log
Patched for Minitest 5: http://pkgs.fedoraproject.org/cgit/rubygem-mono_logger.git/commit/?id=a7a58b128f04e5acafa9f0d4df7705ca8770a5ad F22 build: http://koji.fedoraproject.org/koji/taskinfo?taskID=7130299