Comment # 2 on bug 1131079 from Neil Rickert

Created attachment 801746 [details]
Selected relevant lines from "/var/log/messages"

The first line shown seems to be "systemd" shutting down automounts.  And since
that's how I am accessing the NFS package cache, it is probably related.  I'm
guessing that Gnome is telling "systemd" to do this.

The other lines show RPM output. process 6956 seems to be the one that failed. 
And process 7181 seems to be the successful repeat after the "r" (for retry). 
I kept a few additional lines in case they are relevant.