Public bug reported:

This affects 1.1.5-0ubuntu0.15.10.3 on Wily. I believe it also affects
1.1.5-0ubuntu0.15.04.3 on Vivid.

Downgrading to 1.1.4-0ubuntu1 fixes it, so it does not affect
1.1.4-0ubuntu1 on Wily.

My failure case is that I am running adt-run --apt-pocket=proposed -U
with adt-virt-lxc and a test needs to upgrade systemd in the container
which fails in the postinst. I think this comes down to lxc being unable
to dist-upgrade xenial-proposed.

I created the container with: sudo lxc-create -n xenial -t ubuntu-cloud
-- -r xenial -T http://cloud-images.ubuntu.com/xenial/current/xenial-
server-cloudimg-amd64-root.tar.gz -F

Reproduce with: adt-run -U --apt-pocket=proposed libapache2-mod-perl2
--- adt-virt-lxc -es xenial

Expected: test pass (or fail for unrelated reason)

Actual: test fail due to:

Processing triggers for systemd (228-2ubuntu2) ...
Failed to execute operation: Failed to activate service 
'org.freedesktop.systemd1': timed out
dpkg: error processing package systemd (--unpack):
 subprocess installed post-installation script returned error exit status 1
Processing triggers for ufw (0.34-2) ...
Errors were encountered while processing:
 systemd
E: Sub-process /usr/bin/dpkg returned an error code (1)
blame: libapache2-mod-perl2
badpkg: failed to run apt-get to satisfy adt-satdep.deb dependencies
adt-run [15:57:15]: ERROR: erroneous package: failed to run apt-get to satisfy 
adt-satdep.deb dependencies

I tried to reduce the failure case but I'm not sure how to manually
activate a trigger for systemd.

Workaround: downgrade using: sudo apt-get install lxc=1.1.4-0ubuntu1
lxcfs=0.10-0ubuntu2 liblxc1=1.1.4-0ubuntu1 python3-lxc=1.1.4-0ubuntu1

Presumably the failure case will stop working once systemd lands in the
xenial release pocket, but perhaps reconfiguring it would still
reproduce?

Confirmed since pitti has experienced this as well.

** Affects: lxc (Ubuntu)
     Importance: Undecided
         Status: Fix Released

** Affects: lxc (Ubuntu Wily)
     Importance: Undecided
         Status: Confirmed

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https://bugs.launchpad.net/bugs/1527666

Title:
  lxc on Wily cannot dist-upgrade Xenial

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