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http://buildbot.python.org/all/builders/AMD64%20Windows8.1%20Refleaks%203.6/builds/15/steps/test/logs/stdio
0:02:58 [ 28/405/2] test_atexit failed
......
beginning 6 repetitions
123456
test_atexit leaked [12, 12, 12] references, sum=36
test_atexit leaked [4, 4, 4] memory blocks, sum=12
Code of of the test:
 def test_callbacks_leak(self):
 # This test shows a leak in refleak mode if atexit doesn't
 # take care to free callbacks in its per-subinterpreter module
 # state.
 n = atexit._ncallbacks()
 code = r"""if 1:
 import atexit
 def f():
 pass
 atexit.register(f)
 del atexit
 """
 ret = support.run_in_subinterp(code)
 self.assertEqual(ret, 0)
 self.assertEqual(atexit._ncallbacks(), n)
Hum, I don't understand: the test leaks references on purpose?
To reproduce the bug, use the command:
python -m test -R 3:3 -m test_callbacks_leak test_atexit
Note: Leak isolated my bisect_test.py of bpo-29512.