TypeError: 'NoneType' object is not callable

[Ye Wang]

Running into this error while running unit tests, I have never seen this error before while running uni tests. Any thoughts what's going on?

Ran 3 tests in 8.775s

FAILED (failures=1)
Exception ignored in: <bound method Session.__del__ of <apns_clerk.transport.Session object at 0x7f1aa2b5f550>>
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/site-packages/apns_clerk/transport.py", line 205, in __del__
  File "/usr/local/lib/python3.5/site-packages/apns_clerk/transport.py", line 201, in shutdown
  File "/usr/local/lib/python3.5/site-packages/apns_clerk/backends/__init__.py", line 143, in outdate
TypeError: 'NoneType' object is not callable
Exception ignored in: <bound method BaseBackend.__del__ of <apns_clerk.backends.stdio.Backend object at 0x7f1aa2b5f668>>
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/site-packages/apns_clerk/backends/__init__.py", line 164, in __del__
  File "/usr/local/lib/python3.5/site-packages/apns_clerk/backends/__init__.py", line 143, in outdate
TypeError: 'NoneType' object is not callable

[Paul Götze]

Seeing the same issue (also Python 3.5.3). This is lying around for quite some while. Is it likely to get fixed anytime soon?