starting svn operation

remoteFailed: [Failure instance: Traceback from remote host -- Traceback (most recent call last):
  File "C:\Python26\lib\site-packages\twisted\internet\defer.py", line 133, in maybeDeferred
    result = f(*args, **kw)
  File "C:\Python26\lib\site-packages\buildbot_slave-0.8.3-py2.6.egg\buildslave\commands\base.py", line 295, in start
    d.addCallback(self.doClobber, self.srcdir)
  File "C:\Python26\lib\site-packages\twisted\internet\defer.py", line 297, in addCallback
    callbackKeywords=kw)
  File "C:\Python26\lib\site-packages\twisted\internet\defer.py", line 286, in addCallbacks
    self._runCallbacks()
--- <exception caught here> ---
  File "C:\Python26\lib\site-packages\twisted\internet\defer.py", line 542, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "C:\Python26\lib\site-packages\buildbot_slave-0.8.3-py2.6.egg\buildslave\commands\base.py", line 480, in doClobber
    utils.rmdirRecursive(d)
  File "C:\Python26\lib\site-packages\buildbot_slave-0.8.3-py2.6.egg\buildslave\commands\utils.py", line 77, in rmdirRecursive
    rmdirRecursive(full_name)
  File "C:\Python26\lib\site-packages\buildbot_slave-0.8.3-py2.6.egg\buildslave\commands\utils.py", line 82, in rmdirRecursive
    os.rmdir(dir)
exceptions.WindowsError: [Error 145] : u'E:\\Buildbot\\bh5000-slave-subway\\BHClient\\build\\CaseLibrary'
]