Your package qtractor failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=5765195 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild
This bug appears to have been reported against 'rawhide' during the Fedora 20 development cycle. Changing version to '20'. More information and reason for this action is here: https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora20
It looks like a newer version has been built and is in updates-testing: https://admin.fedoraproject.org/updates/FEDORA-2013-18534/qtractor-0.5.11-1.fc20