Please see the attached images. I get an email saying my backup copy failed, yet that very email says no warnings and no errors occurred...

In the morning I get to work and inspect the job logs. The errors are clearly shown, but then it says the job was a success.

Was it successful or was it not? If so, why am I getting a failure email that makes me all stabby first thing in the morning? If not, why does it not clearly say there were errors in the job?
Advice here? This doesn't seem very intuitive to me.
Forgive my tone. This is rather aggravating. Time-wasting false alarms are a pretty severe pet-peeve.
Thanks.