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

[Jean-Baptiste Lallement]

Public bug reported:

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)

** Affects: bzr (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug qa-manual-testing raring running-unity

** Attachment added: "adt-bzr.log"
   https://bugs.launchpad.net/bugs/1101206/+attachment/3487468/+files/adt-bzr.log

** Summary changed:

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

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https://bugs.launchpad.net/bugs/1101206

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

Status in “bzr” package in Ubuntu:
  New

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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