Your package ktechlab failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=7000015 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 906018 [details] build.log
Created attachment 906019 [details] root.log
Created attachment 906020 [details] state.log
Created attachment 910174 [details] Patch for rawhide The autotools patch needed updating for automake-1.14, and then there was an API change in gpsim-0.27. Patch for rawhide attached.