failure with unexpected None in format_exception_only in _translate_error in TestResponseEncodingProtocolThree.test_send_broken_body_stream

[Martin Pool]

======================================================================
ERROR: test_send_broken_body_stream (bzrlib.tests.test_smart_transport.TestResponseEncodingProtocolThree)

vvvv[log from bzrlib.tests.test_smart_transport.TestResponseEncodingProtocolThree.test_send_broken_body_stream]

^^^^[log from bzrlib.tests.test_smart_transport.TestResponseEncodingProtocolThree.test_send_broken_body_stream]
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Python-2.5/lib/python2.5/site-packages/bzrlib/tests/test_smart_transport.py", line 2831, in test_send_broken_body_stream
    encoder.send_response(response)
  File "/usr/local/Python-2.5/lib/python2.5/site-packages/bzrlib/smart/protocol.py", line 1166, in send_response
    error_struct = request._translate_error(exc_info[1])
  File "/usr/local/Python-2.5/lib/python2.5/site-packages/bzrlib/smart/request.py", line 348, in _translate_error
    trace.log_exception_quietly()
  File "/usr/local/Python-2.5/lib/python2.5/site-packages/bzrlib/trace.py", line 354, in log_exception_quietly
    mutter(traceback.format_exc())
  File "/usr/local/Python-2.5/lib/python2.5/traceback.py", line 236, in format_exc
    return ''.join(format_exception(etype, value, tb, limit))
  File "/usr/local/Python-2.5/lib/python2.5/traceback.py", line 145, in format_exception
    list = list + format_exception_only(etype, value)
  File "/usr/local/Python-2.5/lib/python2.5/traceback.py", line 176, in format_exception_only
    stype = etype.__name__
AttributeError: 'NoneType' object has no attribute '__name__'

[Martin Pool (mbp)]

See thread "Failed selftest 1.13rc1".