Hi Jelmer,

This makes the test suite fail:

ERROR: wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file
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Text attachment: log
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1.631  creating repository in file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/.
1.634  creating branch <bzrlib.branch.BzrBranchFormat7 object at 0x39c7090> in file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/
1.640  trying to create missing lock '/tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/checkout/dirstate'
1.640  opening working tree '/tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work'
1.645  skip control directory '.bzr'
1.645  creating config directory: '/tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/home/.bazaar'
1.648  preparing to commit
    INFO  Committing to: /tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/
1.650  Selecting files for commit with filter None
    INFO  added README
    INFO  Committed revision 1.
1.668  opening working tree '/tmp/testbzr-lrpIxX.tmp'
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Text attachment: traceback
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Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/testtools/testcase.py", line 153, in _runCleanups
    function(*arguments, **keywordArguments)
AssertionError: Different number of acquired and released or broken locks. ([LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/branch-lock3wtt4kz8cx40cwolrim4), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/repository/locks1n7dza8ncd6g4mpkm3n), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/branch/lock00a4oh1pyoqalyn1ojjt), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/checkout/lock5i05vu2exlsh0iz13bvd), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/checkout/lock71m26fqbpszpruhrzqcj), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/branch/lockkai5puavhgt9w3n950aj), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/checkout/lockvho3y2u6zp2rk7u51gm6), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/repository/lock452dh8q3ts2rdxjdagmh), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/branch/lockhhtjr77jxj86io359ii9), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/checkout/lockp7q43swcrowzce5ftw08)], [LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/branch-lock3wtt4kz8cx40cwolrim4), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/repository/locks1n7dza8ncd6g4mpkm3n), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/branch/lock00a4oh1pyoqalyn1ojjt), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/checkout/lock5i05vu2exlsh0iz13bvd), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/checkout/lock71m26fqbpszpruhrzqcj), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/repository/lock452dh8q3ts2rdxjdagmh), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/checkout/lockvho3y2u6zp2rk7u51gm6), LockResult(file:///tmp/testbzr-lrpIxX.tmp/wikkid.tests.test_bzr_filestore.TestBzrFileStore.test_updating_existing_file/work/.bzr/branch/lockkai5puavhgt9w3n950aj)] + [])
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