#798211 apt-mark apparently conflicts with apt-get update; guess: missing lock

Package:
apt
Source:
apt
Description:
commandline package manager
Submitter:
Jürgen A . Erhard
Date:
2015-09-06 20:21:06 UTC
Severity:
important
#798211#5
Date:
2015-09-06 19:57:22 UTC
From:
To:
Running apt-mark while an apt-get update was running concurrently, I
got this:

E: Problem renaming the file /var/cache/apt/pkgcache.bin.uuCnyh to
/var/cache/apt/pkgcache.bin - rename (2: No such file or directory)
W: You may want to run apt-get update to correct these problems

Looks to me like either or both don't acquire a necessary lock.