Almost there...

Fails on pqm:

blackbox.test_export.TestExport.test_tar_export_ignores_bzr FAIL        0ms
    Text attachment: log
------------
149.696  creating repository in file:///tmp/testbzr-cRPmgM.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/.bzr/.
149.699  creating branch <bzrlib.branch.BzrBranchFormat7 object at 0x88e6510> in file:///tmp/testbzr-cRPmgM.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/
149.710  trying to create missing lock '/tmp/testbzr-cRPmgM.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/.bzr/checkout/dirstate'
149.710  opening working tree '/tmp/testbzr-cRPmgM.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree'
149.725  preparing to commit
    INFO  Committing to: /tmp/testbzr-cRPmgM.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/
149.728  Selecting files for commit with filter None
    INFO  added a
    INFO  Committed revision 1.
149.741  Committed revid <email address hidden> as revno 1.
149.747  run bzr: ['ignore', 'something', '-d', 'tree']
149.748  bazaar version: 2.4.0dev4
149.748  bzr arguments: [u'ignore', u'something', u'-d', u'tree']
149.751  encoding stdout as sys.stdout encoding 'UTF-8'
149.754  opening working tree '/tmp/testbzr-cRPmgM.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree'
149.769  preparing to commit
    INFO  Committing to: /tmp/testbzr-cRPmgM.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/
149.773  Selecting files for commit with filter None
    INFO  added .bzr-adir
    INFO  added .bzrignore
    INFO  added .bzrrules
    INFO  added .bzr-adir/afile
    INFO  Committed revision 2.
149.795  Committed revid <email address hidden> as revno 2.
149.797  run bzr: ['export', 'test.tar.gz', '-d', 'tree']
149.797  bazaar version: 2.4.0dev4
149.797  bzr arguments: [u'export', u'test.tar.gz', u'-d', u'tree']
149.799  encoding stdout as sys.stdout encoding 'UTF-8'
149.803  opening working tree '/tmp/testbzr-cRPmgM.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree'
149.808  export version <DirStateRevisionTree of <email address hidden> in DirState(u'/tmp/testbzr-cRPmgM.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/.bzr/checkout/dirstate')>
149.811  errors:
"Exception ValueError: ValueError('write() on closed GzipFile object',) in <bound method _Stream.__del__ of <tarfile._Stream instance at 0x7ca1c68>> ignored\n"
149.818  opening working tree '/tmp/testbzr-cRPmgM.tmp'
------------
Text attachment: traceback
------------
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/testtools/runtest.py", line 144, in _run_user
    return fn(*args)
  File "/usr/lib/python2.6/dist-packages/testtools/testcase.py", line 465, in _run_test_method
    testMethod()
  File "/home/pqm/bzr-pqm-workdir/home/+trunk/bzrlib/tests/blackbox/test_export.py", line 98, in test_tar_export_ignores_bzr
    sorted(ball.getnames()))
AssertionError: not equal:
a = ['test/a']
b = []

------------

blackbox.test_export.TestExport.test_tgz_exportERROR        0ms


python -Werror ./bzr selftest -s bb.test_export also fails locally with:

bzr selftest: /home/vila/src/bzr/reviews/tarball-generator/bzr
   /home/vila/src/bzr/reviews/tarball-generator/bzrlib
   bzr-2.4.0dev4 python-2.7.1 Linux-2.6.38-8-generic-x86_64-with-Ubuntu-11.04-natty

ERROR: blackbox.test_export.TestExport.test_tar_export_ignores_bzr
    Text attachment: log
------------
0.765  creating repository in file:///tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/.bzr/.
0.766  creating branch <bzrlib.branch.BzrBranchFormat7 object at 0x313ff50> in file:///tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/
0.770  trying to create missing lock '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/.bzr/checkout/dirstate'
0.770  opening working tree '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree'
0.777  preparing to commit
    INFO  Committing to: /tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/
0.778  Selecting files for commit with filter None
    INFO  added a
    INFO  Committed revision 1.
0.785  Committed revid <email address hidden> as revno 1.
0.787  run bzr: ['ignore', 'something', '-d', 'tree']
0.787  bazaar version: 2.4.0dev4
0.787  bzr arguments: [u'ignore', u'something', u'-d', u'tree']
0.788  encoding stdout as sys.stdout encoding 'UTF-8'
0.790  opening working tree '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree'
0.797  preparing to commit
    INFO  Committing to: /tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/
0.798  Selecting files for commit with filter None
    INFO  added .bzr-adir
    INFO  added .bzrignore
    INFO  added .bzrrules
    INFO  added .bzr-adir/afile
    INFO  Committed revision 2.
0.807  Committed revid <email address hidden> as revno 2.
0.808  run bzr: ['export', 'test.tar.gz', '-d', 'tree']
0.808  bazaar version: 2.4.0dev4
0.808  bzr arguments: [u'export', u'test.tar.gz', u'-d', u'tree']
0.809  encoding stdout as sys.stdout encoding 'UTF-8'
0.811  opening working tree '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree'
0.813  export version <DirStateRevisionTree of <email address hidden> in DirState(u'/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/.bzr/checkout/dirstate')>
0.814  errors:
"Exception ValueError: ValueError('I/O operation on closed file.',) in <bound method _Stream.__del__ of <tarfile._Stream instance at 0x30d2f38>> ignored\n"
0.818  opening working tree '/tmp/testbzr-60Q9ji.tmp'
------------
Text attachment: traceback
------------
Traceback (most recent call last):
  File "/home/vila/lib/python/testtools/runtest.py", line 169, in _run_user
    return fn(*args, **kwargs)
  File "/home/vila/lib/python/testtools/testcase.py", line 506, in _run_test_method
    return self._get_test_method()()
  File "/home/vila/src/bzr/reviews/tarball-generator/bzrlib/tests/blackbox/test_export.py", line 94, in test_tar_export_ignores_bzr
    ball = tarfile.open('test.tar.gz')
  File "/usr/lib/python2.7/tarfile.py", line 1663, in open
    raise ReadError("file could not be opened successfully")
ReadError: file could not be opened successfully
------------

ERROR: blackbox.test_export.TestExport.test_tgz_export
    Text attachment: log
------------
0.931  creating repository in file:///tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree/.bzr/.
0.932  creating branch <bzrlib.branch.BzrBranchFormat7 object at 0x36b6790> in file:///tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree/
0.936  trying to create missing lock '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree/.bzr/checkout/dirstate'
0.936  opening working tree '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree'
0.943  preparing to commit
    INFO  Committing to: /tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree/
0.945  Selecting files for commit with filter None
    INFO  added a
    INFO  Committed revision 1.
0.951  Committed revid <email address hidden> as revno 1.
0.951  run bzr: ['export', '-d', 'tree', 'test.tgz']
0.951  bazaar version: 2.4.0dev4
0.951  bzr arguments: [u'export', u'-d', u'tree', u'test.tgz']
0.953  encoding stdout as sys.stdout encoding 'UTF-8'
0.954  opening working tree '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree'
0.957  export version <DirStateRevisionTree of <email address hidden> in DirState(u'/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree/.bzr/checkout/dirstate')>
0.958  errors:
"Exception ValueError: ValueError('I/O operation on closed file.',) in <bound method _Stream.__del__ of <tarfile._Stream instance at 0x311d3f8>> ignored\n"
0.961  opening working tree '/tmp/testbzr-60Q9ji.tmp'
------------
Text attachment: traceback
------------
Traceback (most recent call last):
  File "/home/vila/lib/python/testtools/runtest.py", line 169, in _run_user
    return fn(*args, **kwargs)
  File "/home/vila/lib/python/testtools/testcase.py", line 506, in _run_test_method
    return self._get_test_method()()
  File "/home/vila/src/bzr/reviews/tarball-generator/bzrlib/tests/blackbox/test_export.py", line 189, in test_tgz_export
    self.run_tar_export_disk_and_stdout('tgz', 'gz')
  File "/home/vila/src/bzr/reviews/tarball-generator/bzrlib/tests/blackbox/test_export.py", line 179, in run_tar_export_disk_and_stdout
    ball = tarfile.open(fname, mode=mode)
  File "/usr/lib/python2.7/tarfile.py", line 1688, in open
    **kwargs)
  File "/usr/lib/python2.7/tarfile.py", line 1572, in __init__
    self.firstmember = self.next()
  File "/usr/lib/python2.7/tarfile.py", line 2334, in next
    raise ReadError("empty file")
ReadError: empty file
------------

======================================================================
ERROR: bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr
----------------------------------------------------------------------
_StringException: Text attachment: log
------------
0.765  creating repository in file:///tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/.bzr/.
0.766  creating branch <bzrlib.branch.BzrBranchFormat7 object at 0x313ff50> in file:///tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/
0.770  trying to create missing lock '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/.bzr/checkout/dirstate'
0.770  opening working tree '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree'
0.777  preparing to commit
    INFO  Committing to: /tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/
0.778  Selecting files for commit with filter None
    INFO  added a
    INFO  Committed revision 1.
0.785  Committed revid <email address hidden> as revno 1.
0.787  run bzr: ['ignore', 'something', '-d', 'tree']
0.787  bazaar version: 2.4.0dev4
0.787  bzr arguments: [u'ignore', u'something', u'-d', u'tree']
0.788  encoding stdout as sys.stdout encoding 'UTF-8'
0.790  opening working tree '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree'
0.797  preparing to commit
    INFO  Committing to: /tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/
0.798  Selecting files for commit with filter None
    INFO  added .bzr-adir
    INFO  added .bzrignore
    INFO  added .bzrrules
    INFO  added .bzr-adir/afile
    INFO  Committed revision 2.
0.807  Committed revid <email address hidden> as revno 2.
0.808  run bzr: ['export', 'test.tar.gz', '-d', 'tree']
0.808  bazaar version: 2.4.0dev4
0.808  bzr arguments: [u'export', u'test.tar.gz', u'-d', u'tree']
0.809  encoding stdout as sys.stdout encoding 'UTF-8'
0.811  opening working tree '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree'
0.813  export version <DirStateRevisionTree of <email address hidden> in DirState(u'/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tar_export_ignores_bzr/work/tree/.bzr/checkout/dirstate')>
0.814  errors:
"Exception ValueError: ValueError('I/O operation on closed file.',) in <bound method _Stream.__del__ of <tarfile._Stream instance at 0x30d2f38>> ignored\n"
0.818  opening working tree '/tmp/testbzr-60Q9ji.tmp'
------------
Text attachment: traceback
------------
Traceback (most recent call last):
  File "/home/vila/lib/python/testtools/runtest.py", line 169, in _run_user
    return fn(*args, **kwargs)
  File "/home/vila/lib/python/testtools/testcase.py", line 506, in _run_test_method
    return self._get_test_method()()
  File "/home/vila/src/bzr/reviews/tarball-generator/bzrlib/tests/blackbox/test_export.py", line 94, in test_tar_export_ignores_bzr
    ball = tarfile.open('test.tar.gz')
  File "/usr/lib/python2.7/tarfile.py", line 1663, in open
    raise ReadError("file could not be opened successfully")
ReadError: file could not be opened successfully
------------

======================================================================
ERROR: bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export
----------------------------------------------------------------------
_StringException: Text attachment: log
------------
0.931  creating repository in file:///tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree/.bzr/.
0.932  creating branch <bzrlib.branch.BzrBranchFormat7 object at 0x36b6790> in file:///tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree/
0.936  trying to create missing lock '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree/.bzr/checkout/dirstate'
0.936  opening working tree '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree'
0.943  preparing to commit
    INFO  Committing to: /tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree/
0.945  Selecting files for commit with filter None
    INFO  added a
    INFO  Committed revision 1.
0.951  Committed revid <email address hidden> as revno 1.
0.951  run bzr: ['export', '-d', 'tree', 'test.tgz']
0.951  bazaar version: 2.4.0dev4
0.951  bzr arguments: [u'export', u'-d', u'tree', u'test.tgz']
0.953  encoding stdout as sys.stdout encoding 'UTF-8'
0.954  opening working tree '/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree'
0.957  export version <DirStateRevisionTree of <email address hidden> in DirState(u'/tmp/testbzr-60Q9ji.tmp/bzrlib.tests.blackbox.test_export.TestExport.test_tgz_export/work/tree/.bzr/checkout/dirstate')>
0.958  errors:
"Exception ValueError: ValueError('I/O operation on closed file.',) in <bound method _Stream.__del__ of <tarfile._Stream instance at 0x311d3f8>> ignored\n"
0.961  opening working tree '/tmp/testbzr-60Q9ji.tmp'
------------
Text attachment: traceback
------------
Traceback (most recent call last):
  File "/home/vila/lib/python/testtools/runtest.py", line 169, in _run_user
    return fn(*args, **kwargs)
  File "/home/vila/lib/python/testtools/testcase.py", line 506, in _run_test_method
    return self._get_test_method()()
  File "/home/vila/src/bzr/reviews/tarball-generator/bzrlib/tests/blackbox/test_export.py", line 189, in test_tgz_export
    self.run_tar_export_disk_and_stdout('tgz', 'gz')
  File "/home/vila/src/bzr/reviews/tarball-generator/bzrlib/tests/blackbox/test_export.py", line 179, in run_tar_export_disk_and_stdout
    ball = tarfile.open(fname, mode=mode)
  File "/usr/lib/python2.7/tarfile.py", line 1688, in open
    **kwargs)
  File "/usr/lib/python2.7/tarfile.py", line 1572, in __init__
    self.firstmember = self.next()
  File "/usr/lib/python2.7/tarfile.py", line 2334, in next
    raise ReadError("empty file")
ReadError: empty file
------------

----------------------------------------------------------------------
Ran 20 tests in 1.036s

FAILED (errors=2)