Symfony 3 (php-symfony3) has been built in rawhide.  It installs into `/usr/share/php/Symfony3`.  Symfony 2 (php-symfony) still installs into `/usr/share/php/Symfony`.  Symfony v2 and v3 packges can be dual-installed.  If your packages do not either limit constraint dependencies to v2 or if your packages do not account for the dual directories, there will be failures.  Symfony v3 will sit in rawhide until all Koschei issues are flushed out.  Please let me know if there are any issues.