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[James Hunt <1357252@xxxxxxxxxxxxxxxxxx>]

There is definitely an upstart bug here as I have a child that has
failed to setup cgroups successfully and is spinning, attempting to
notify the parent via JOB_PROCESS_ERROR_CGROUP_SETUP. The only reason it
is spinning could be that the other end of the pipe is closed, but that
shouldn't be possible.

This needs further investigation, but is a side-effect of the fact that
cgroup setup is failing due to the cgmanger denial shown in #20.

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https://bugs.launchpad.net/bugs/1357252

Title:
  Upstart jobs specifying cgroup fail to start occasionally

Status in Ubuntu Application Launcher:
  Incomplete
Status in Upstart:
  New
Status in “cgmanager” package in Ubuntu:
  Confirmed

Bug description:
  After the ubuntu-app-launch landing in #188
  (http://people.canonical.com/~ogra/touch-image-stats/188.changes), UI
  Toolkit autopilot tests have started failing, see
  http://ci.ubuntu.com/smokeng/utopic/touch/mako/190:20140815:20140811.1/9676/ubuntuuitoolkit/
  and the #188 results too. It's different tests each time, but a bit
  above 10 of them tend to fail on each full run.

  Reproducable locally, where I got 11 such failures.

  To reproduce:
  [terminal 1]
  1. flash/update device if needed
  2. adb shell
  3. apt install ubuntu-ui-toolkit-autopilot
  4. powerd-cli display on bright # leave running, also unlock the screen so that lenses are shown
  [terminal 2]
  5. phablet-config autopilot --dbus-probe enable # wait until finishes
  6. phablet-test-run ubuntuuitoolkit

  A full test suite run will take around 0.5h and should produce a bunch
  of 'Application failed to start.':s.

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