Your package ghc-warp failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=6971332 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 904811 [details] build.log
Created attachment 904812 [details] root.log
Created attachment 904813 [details] state.log
*** Bug 1106611 has been marked as a duplicate of this bug. ***