Traceback (most recent call last):
  File "/home/username/src-pkg/bzr/oldtrunk/bzrlib/commands.py", line 918, in exception_to_return_code
    return the_callable(*args, **kwargs)
  File "/home/username/src-pkg/bzr/oldtrunk/bzrlib/commands.py", line 1118, in run_bzr
    ret = run(*run_argv)
  File "/home/username/src-pkg/bzr/oldtrunk/bzrlib/commands.py", line 676, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/home/username/src-pkg/bzr/oldtrunk/bzrlib/commands.py", line 698, in run
    return self._operation.run_simple(*args, **kwargs)
  File "/home/username/src-pkg/bzr/oldtrunk/bzrlib/cleanup.py", line 135, in run_simple
    self.cleanups, self.func, *args, **kwargs)
  File "/home/username/src-pkg/bzr/oldtrunk/bzrlib/cleanup.py", line 165, in _do_with_cleanups
    result = func(*args, **kwargs)
  File "/home/username/src-pkg/bzr/oldtrunk/bzrlib/builtins.py", line 3836, in run
    result = tests.selftest(**selftest_kwargs)
  File "/home/username/src-pkg/bzr/oldtrunk/bzrlib/tests/__init__.py", line 3629, in selftest
    suite = test_suite(keep_only, starting_with)
  File "/home/username/src-pkg/bzr/oldtrunk/bzrlib/tests/__init__.py", line 4116, in test_suite
    plugin_suite = plugin.test_suite()
  File "/home/username/src-pkg/bzr/oldtrunk/bzrlib/plugin.py", line 562, in test_suite
    return self.module.test_suite()
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/fastimport/__init__.py", line 100, in test_suite
    import tests
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/fastimport/tests/__init__.py", line 21, in <module>
    from bzrlib.tests import Feature, TestLoader
ImportError: cannot import name Feature