/etc/cron.daily/0yum-daily.cron:

Update notice SLBA-2018:1066-1 (from sl-fastbugs) is broken, or a bad 
duplicate, skipping.
You should report this problem to the owner of the sl-fastbugs repository.
If you are the owner, consider re-running the same command with 
--verbose to see the exact data that caused the conflict.