Your package yydebug failed to build from source in current rawhide. https://koji.fedoraproject.org/koji/taskinfo?taskID=17795448 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild
Created attachment 1254963 [details] build.log
Created attachment 1254964 [details] root.log
Created attachment 1254965 [details] state.log
This bug appears to have been reported against 'rawhide' during the Fedora 26 development cycle. Changing version to '26'.
Fixed in rawhide http://pkgs.fedoraproject.org/cgit/rpms/yydebug.git/commit/?id=8507300af4d20db72b1a9a18adc18bf7f41b059f