Your package rubygem-ruby_parser failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=7003996 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 906415 [details] build.log
Created attachment 906416 [details] root.log
Created attachment 906417 [details] state.log