Your package mysql-proxy failed to build from source in current rawhide. http://koji.fedoraproject.org/koji/taskinfo?taskID=6962724 For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
Created attachment 904334 [details] build.log
Created attachment 904335 [details] root.log
Created attachment 904336 [details] state.log
Created attachment 910898 [details] Patch for rawhide Cause was lua 5.2 incompatibility; this patch fixes by using compat-lua.
Thanks very much for the patch Yaakov, I've applied the patch and successfully built MySQL Proxy for Rawhide.