Your package rubygem-coffee-script failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=7000189 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 906036 [details] build.log
Created attachment 906037 [details] root.log
Created attachment 906038 [details] state.log