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Intermittent test failures of

See original GitHub issue

From time to time this test fails in the openSUSE build service, even on x86_64. It passes perfectly nicely on my local machine (all using the latest openSUSE/Tumbleweed, our rolling distro):

[  142s] ======================================================================
[  142s] FAIL: Setup timers, sleep and start polling (epoll)
[  142s] ----------------------------------------------------------------------
[  142s] Traceback (most recent call last):
[  142s]   File "/home/abuild/rpmbuild/BUILD/pika-0.12.0/tests/unit/select_connection_ioloop_tests.py", line 311, in start_test
[  142s]     self.start()
[  142s]   File "/home/abuild/rpmbuild/BUILD/pika-0.12.0/tests/unit/select_connection_ioloop_tests.py", line 73, in start
[  142s]     self.ioloop.start()
[  142s]   File "/home/abuild/rpmbuild/BUILD/pika-0.12.0/pika/adapters/select_connection.py", line 461, in start
[  142s]     self._poller.start()
[  142s]   File "/home/abuild/rpmbuild/BUILD/pika-0.12.0/pika/adapters/select_connection.py", line 722, in start
[  142s]     self._process_timeouts()
[  142s]   File "/home/abuild/rpmbuild/BUILD/pika-0.12.0/pika/adapters/select_connection.py", line 413, in process_timeouts
[  142s]     self._timer.process_timeouts()
[  142s]   File "/home/abuild/rpmbuild/BUILD/pika-0.12.0/pika/adapters/select_connection.py", line 268, in process_timeouts
[  142s]     timeout.callback()
[  142s]   File "/home/abuild/rpmbuild/BUILD/pika-0.12.0/tests/unit/select_connection_ioloop_tests.py", line 210, in on_timer
[  142s]     self.assertEqual(val, self.timer_stack.pop())
[  142s] AssertionError: 4 != 3
[  142s]     '4 != 3' = '%s != %s' % (safe_repr(4), safe_repr(3))
[  142s]     '4 != 3' = self._formatMessage('4 != 3', '4 != 3')
[  142s] >>  raise self.failureException('4 != 3')
[  142s]     
[  142s] -------------------- >> begin captured logging << --------------------

Complete build log of the failed run