missing dependencies leaves the container running blocking further jobs

http://s-jenkins.ubuntu-ci:8080/job/autopilot-testrunner-otto-saucy/1336/console is another example:

/var/local/autopilot/setup.log: The following packages have unmet dependencies:
/var/local/autopilot/setup.log: ubuntu-ui-toolkit-autopilot : Depends: python-autopilot (>= 1.4) but 1.3.1+13.10.20131023.1-0ubuntu1 is to be installed

This is not a bug in Otto but in a custom version of the script that calls autopilot for medium tests of the upstream merger. I don't know where it comes from but it is not from Otto. Moving to ubuntu-ci-services-itself

In the referenced job the failure is not detected because in usr/local/bin/run-autopilot.sh (from container ps-radeon-hd8350:/var/lib/lxc/trusty-amd64-20131023-0529/) in install_debs() apt is called with:

66 echo "Package list: ${package_list}" >> $AP_SETUP_LOGFILE
67 sudo apt-get -y --force-yes install $package_list >> $AP_SETUP_LOGFILE

and there is no error handling

You should do something like this instead
rc=0
sudo apt-get -y --force-yes install $package_list||rc=$? >> $AP_SETUP_LOGFILE
if [ $rc -gt 0 ]; then
    # Terminate gracefully
   ...