Your package rubygem-coveralls failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=10149934 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild
Created attachment 1048012 [details] build.log
Created attachment 1048013 [details] root.log
Created attachment 1048014 [details] state.log
This bug appears to have been reported against 'rawhide' during the Fedora 23 development cycle. Changing version to '23'. (As we did not run this process for some time, it could affect also pre-Fedora 23 development cycle bugs. We are very sorry. It will help us with cleanup during Fedora 23 End Of Life. Thank you.) More information and reason for this action is here: https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora23