Your package rubygem-yard failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=10152021 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild
Created attachment 1048261 [details] build.log
Created attachment 1048262 [details] root.log
Created attachment 1048263 [details] state.log