Error message: unknown user 'geoclue' in statoverride file

I obtained a strange error message inside a chroot: unknown user 'geoclue' in statoverride file when running apt-get install or apt-get upgrade. I use schroot to enter this chroot. I found that I had a package called geoclue-2.0 installed in the chroot, and I purged it. apt-get purge geoclue-2.0 This made the problem go away. What caused this problem? I'm running Debian wheezy on the host machine. The chroot is running Debian jessie (testing). I asked about this on chat, and this prompted Braiam to post the closely related [How to prevent schroot from overridding passwd file and others files already present on the chrooted system?](https://unix.stackexchange.com/q/160487/4671)