Your package byzanz failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=6941749 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 903663 [details] build.log
Created attachment 903664 [details] root.log
Created attachment 903665 [details] state.log
Created attachment 910529 [details] Patch for rawhide According to http://rwmj.wordpress.com/2014/01/06/alignment-errors-on-fedora-arm/ the cast alignment error can just be disabled on armv7hl (but not earlier %{arm}). Patch for rawhide attached.