Your package bro failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=6941237 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 903639 [details] build.log
Created attachment 903640 [details] root.log
Created attachment 903641 [details] state.log