Your package jruby failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=4965195 Build logs: root.log: http://kojipkgs.fedoraproject.org/work/tasks/5195/4965195/root.log build.log: http://kojipkgs.fedoraproject.org/work/tasks/5195/4965195/build.log state.log: http://kojipkgs.fedoraproject.org/work/tasks/5195/4965195/state.log NOTE: build logs are cleaned up after 1 week For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild
JRuby was updated to 1.7.2 in rawhide (which is now F19) and it's not FTBFS anymore.