[tahoe-lafs-trac-stream] [Tahoe-LAFS] #3301: allmydata.test.test_system.Connections.test_rref can fail with "Address already in use."

[Tahoe-LAFS]

#3301: allmydata.test.test_system.Connections.test_rref can fail with "Address
already in use."
---------------------+---------------------------
 Reporter:  exarkun  |          Owner:
     Type:  defect   |         Status:  new
 Priority:  normal   |      Milestone:  undecided
Component:  unknown  |        Version:  n/a
 Keywords:           |  Launchpad Bug:
---------------------+---------------------------
 On c-locale CI job on CircleCI:

 {{{
 Traceback (most recent call last):
   File "/tmp/tahoe-lafs.tox/py27-coverage/lib/python2.7/site-
 packages/twisted/internet/defer.py", line 122, in execute
     result = callable(*args, **kw)
   File "/tmp/tahoe-lafs.tox/py27-coverage/lib/python2.7/site-
 packages/twisted/internet/posixbase.py", line 495, in listenTCP
     p.startListening()
   File "/tmp/tahoe-lafs.tox/py27-coverage/lib/python2.7/site-
 packages/twisted/internet/tcp.py", line 1363, in startListening
     raise CannotListenError(self.interface, self.port, le)
 twisted.internet.error.CannotListenError: Couldn't listen on any:38205:
 [Errno 98] Address already in use.
 }}}

 https://circleci.com/gh/tahoe-lafs/tahoe-lafs/18657

 This is intermittent and unpredictable.  Presumably it is a problem
 similar to the one described in https://tahoe-lafs.org/trac/tahoe-
 lafs/ticket/3026

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/3301>
Tahoe-LAFS <https://Tahoe-LAFS.org>
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