Your package apache-commons-collections failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=6934422 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 903441 [details] build.log
Created attachment 903442 [details] root.log
Created attachment 903443 [details] state.log
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
looks like it's currently building fine: http://koji.fedoraproject.org/koji/taskinfo?taskID=8743344 and has been already rebuild few time since the mass rebuild.