Your package zaz failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=6977801 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 905072 [details] build.log
Created attachment 905073 [details] root.log
Created attachment 905074 [details] state.log
Fixed in rawhide. Closing.