self._add_key(string_key, line, rows, allow_optimize=allow_optimize)
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 351, in _add_key
    self._add_key(string_key, line, rows, allow_optimize=allow_optimize)
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 351, in _add_key
    self._add_key(string_key, line, rows, allow_optimize=allow_optimize)
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 351, in _add_key
    self._add_key(string_key, line, rows, allow_optimize=allow_optimize)
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 351, in _add_key
    self._add_key(string_key, line, rows, allow_optimize=allow_optimize)
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 351, in _add_key
    self._add_key(string_key, line, rows, allow_optimize=allow_optimize)
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 351, in _add_key
    self._add_key(string_key, line, rows, allow_optimize=allow_optimize)
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 351, in _add_key
    self._add_key(string_key, line, rows, allow_optimize=allow_optimize)
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 351, in _add_key
    self._add_key(string_key, line, rows, allow_optimize=allow_optimize)
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 328, in _add_key
    row.finish_node()
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 98, in finish_node
    _BuilderRow.finish_node(self)
  File "/usr/lib/pymodules/python2.7/bzrlib/btree_index.py", line 76, in finish_node
    spool = tempfile.TemporaryFile(prefix='bzr-index-row-')
  File "/usr/lib/python2.7/tempfile.py", line 478, in TemporaryFile
    (fd, name) = _mkstemp_inner(dir, prefix, suffix, flags)
  File "/usr/lib/python2.7/tempfile.py", line 230, in _mkstemp_inner
    return (fd, _os.path.abspath(file))
  File "/usr/lib/python2.7/posixpath.py", line 349, in abspath
    return normpath(path)
  File "/usr/lib/python2.7/posixpath.py", line 315, in normpath
    slash, dot = (u'/', u'.') if isinstance(path, unicode) else ('/', '.')
RuntimeError: maximum recursion depth exceeded while calling a Python object

2988.617  Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/bzrlib/plugin.py", line 542, in _get__version__
    version_string = _format_version_tuple(version_info)
  File "/usr/lib/pymodules/python2.7/bzrlib/__init__.py", line 117, in _format_version_tuple
    raise ValueError("version_info %r not valid" % (version_info,))
ValueError: version_info (1, 1, 0, 'pre', 0) not valid