Your package sugar-stopwatch failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=10155939 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild
Created attachment 1048441 [details] build.log
Created attachment 1048442 [details] root.log
Created attachment 1048443 [details] state.log
Fixed in sugar-stopwatch-18-6.fc23