Bug#852814: Fails at 'policy-rc.d already exists'

[Guido Günther]

Package: pbuilder
Version: 0.228.3
Severity: normal

Hi,
updating a cowbuilder chroots fails like:

# sudo cowbuilder --update --distribution wheezy --basepath /var/cache/pbuilder/base-wheezy.cow --configfile /home/agx/.pbuilderrc
I: Copying COW directory
I: forking: rm -rf /var/cache/pbuilder/tmpbuild/build/cow.13281
I: forking: cp -al /var/scratch/sdcard/pbuilder/base-wheezy.cow
/var/cache/pbuilder/tmpbuild/build/cow.13281
I: removed stale ilistfile
/var/cache/pbuilder/tmpbuild/build/cow.13281/.ilist
I: Invoking pbuilder
I: forking: pbuilder update --configfile /home/agx/.pbuilderrc
--buildplace /var/cache/pbuilder/tmpbuild/build/cow.13281
--extrapackages ' eatmydata' --no-targz --internal-chrootexec 'chroot
/var/cache/pbuilder/tmpbuild/build/cow.13281 cow-shell'
W: /root/.pbuilderrc does not exist
I: Running in no-targz mode
I: Current time: Fri Jan 27 15:52:46 CET 2017
I: pbuilder-time-stamp: 1485528766
I: copying local configuration
I: mounting /proc filesystem
I: mounting /sys filesystem
I: creating /{dev,run}/shm
I: mounting /dev/pts filesystem
I: Mounting /var/cache/pbuilder/ccache
I: policy-rc.d already exists
W: pbuilder update aborted, not cleaning

# echo $?
139

It works when downgrading to 0.227. Let me know if I can provide any
further input.
Cheers,
 -- Gyido

-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'stable-updates'), (500, 'unstable'), (500, 'stable'), (500, 'oldstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-rc8-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages pbuilder depends on:
ii  debconf [debconf-2.0]  1.5.59
ii  debootstrap            1.0.87
ii  dpkg-dev               1.18.18
ii  wget                   1.18-4

Versions of packages pbuilder recommends:
ii  devscripts  2.17.0
ii  eatmydata   105-5
ii  fakeroot    1.21-3
ii  iproute2    4.9.0-1
ii  net-tools   1.60+git20161116.90da8a0-1
ii  sudo        1.8.19-1

Versions of packages pbuilder suggests:
ii  cowdancer   0.83
pn  gdebi-core  <none>

-- debconf information:
  pbuilder/nomirror:
  pbuilder/rewrite: false
  pbuilder/mirrorsite: http://ftp.de.debian.org/debian/