[Bug 1101206] Re: bzr selftest fails with "bzr: ERROR: No module named subunit" when option --parallel=fork is set

[Vincent Ladeuil]

--parallel=fork *requires* subunit because it uses a subunit feature to
collect the test results.

** Changed in: bzr (Ubuntu)
       Status: New => Invalid

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Title:
  bzr selftest fails with "bzr: ERROR: No module named subunit" when
  option --parallel=fork is set

Status in “bzr” package in Ubuntu:
  Invalid

Bug description:
  autopkgtest of bzr running in the QA Lab (https://jenkins.qa.ubuntu.com/view/Raring/view/AutoPkgTest/job/raring-adt-bzr/) fails with:
  """
  bzr: ERROR: No module named subunit
  You may need to install this Python library separately.
  """

  when bzr selftest is called with the option parallel=fork

  selftest runs fine without this option and subunit tests are correctly
  skipped.

  The tests are running on a minimal raring server VM. The host of the
  VM is Precise Server amd64. This is 100% reproducible in the QA Lab
  either with autopkgtest or manually with the command "bzr selftest -v
  --parallel=fork"  but does not occur on on my local machine with the
  same testing environment.

  To reproduce the testing environment:
  1. $ bzr branch lp:auto-package-testing
  2. $ cd auto-package-testing/bin
  3. $ ./prepare-testbed amd64
  4. $ ./run-adt-test bzr

  Log of autopkgtest attached.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: bzr 2.6.0~bzr6571-1ubuntu1
  ProcVersionSignature: Ubuntu 3.8.0-0.4-generic 3.8.0-rc3
  Uname: Linux 3.8.0-0-generic x86_64
  ApportVersion: 2.8-0ubuntu2
  Architecture: amd64
  Date: Fri Jan 18 14:46:48 2013
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: bzr
  UpgradeStatus: Upgraded to raring on 2012-01-31 (352 days ago)

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