rsync output not included in rsnapshot output on 16.04

[Jan Skarvall]

I have been using rsnapshot on Ubuntu 14.04 machines without problems.

Having upgraded to Ubuntu 16.04, I do not get rsync output in the rsnapshot output any more.
I have configured rsnapshot with rsync_short_args -av (with a TAB in between).

I can see, having configured log output as verbose level 3 in rsnapshot.conf, that rsync seems to be called with the -av option, but it does not seem to have any effect.

root@asus:~# lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04

root@asus:~# apt-cache policy rsnapshot
rsnapshot:
  Installed: 1.4.2-1
  Candidate: 1.4.2-1
  Version table:
 *** 1.4.2-1 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu xenial/universe i386 Packages
        100 /var/lib/dpkg/status
root@asus:~#