[tor-bugs] #30882 [Core Tor/Stem]: Stem python 3.8 RuntimeError: dictionary keys changed during iteration

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#30882: Stem python 3.8 RuntimeError: dictionary keys changed during iteration
-------------------------------+--------------------
     Reporter:  teor           |      Owner:  atagar
         Type:  defect         |     Status:  new
     Priority:  Medium         |  Milestone:
    Component:  Core Tor/Stem  |    Version:
     Severity:  Normal         |   Keywords:
Actual Points:                 |  Parent ID:
       Points:                 |   Reviewer:
      Sponsor:                 |
-------------------------------+--------------------
 python 3.8 doesn't seem to like dictionary keys changing during iteration.
 This is on python nightly, so it might be a new python feature (or even a
 python bug).

 It is reproducible: I've seen it in at least two runs so far.

 {{{
   Jun 13 15:02:32.725 [notice] Bootstrapped 100% (done): Done
   done (17 seconds)
 Shutting down tor... done
 Traceback (most recent call last):
   File "./run_tests.py", line 479, in <module>
     main()
   File "./run_tests.py", line 306, in main
     integ_runner.start(target, args.attribute_targets, args.tor_path)
   File "/home/travis/build/torproject/stem/test/runner.py", line 262, in
 start
     self._owner_controller = self.get_tor_controller(True)
   File "/home/travis/build/torproject/stem/test/runner.py", line 482, in
 get_tor_controller
     controller.authenticate(password = CONTROL_PASSWORD, chroot_path =
 self.get_chroot())
   File "/home/travis/build/torproject/stem/stem/control.py", line 1110, in
 authenticate
     stem.connection.authenticate(self, *args, **kwargs)
   File "/home/travis/build/torproject/stem/stem/connection.py", line 596,
 in authenticate
     controller._post_authentication()
   File "/home/travis/build/torproject/stem/stem/control.py", line 3993, in
 _post_authentication
     owning_pid = self.get_conf('__OwningControllerProcess', None)
   File "/home/travis/build/torproject/stem/stem/control.py", line 2261, in
 get_conf
     entries = self.get_conf_map(param, default, multiple)
   File "/home/travis/build/torproject/stem/stem/control.py", line 2364, in
 get_conf_map
     for key in reply:
 RuntimeError: dictionary keys changed during iteration
 The command "./run_tests.py --integ $TARGET" exited with 1.
 }}}
 https://travis-ci.org/torproject/stem/jobs/545118990

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30882>
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