svnpubsub/client.py: RuntimeError: dictionary changed size during iteration

[sebb]

When running a version of watcher.py I got the following error:

  File ".../svnpubsub/client.py", line 251, in run_forever
    self._check_stale()
  File ".../svnpubsub/client.py", line 216, in _check_stale
    for client in asyncore.socket_map.values():
RuntimeError: dictionary changed size during iteration

Is this a known issue?

S.