Fatal Python error: could not acquire lock for <_io.BufferedWriter name='<stderr>'> at interpreter shutdown, possibly due to daemon threads

[Etyala]

Traceback (most recent call last):
File "/usr/lib/python3.5/multiprocessing/queues.py", line 247, in _feed
send_bytes(obj)
File "/usr/lib/python3.5/multiprocessing/connection.py", line 200, in send_bytes
self._send_bytes(m[offset:offset + size])
Traceback (most recent call last):
Traceback (most recent call last):
Traceback (most recent call last):
Traceback (most recent call last):
Traceback (most recent call last):
File "/usr/lib/python3.5/multiprocessing/queues.py", line 247, in _feed
send_bytes(obj)
File "/usr/lib/python3.5/multiprocessing/connection.py", line 200, in send_bytes
self._send_bytes(m[offset:offset + size])
Traceback (most recent call last):
File "/usr/lib/python3.5/multiprocessing/queues.py", line 247, in _feed
send_bytes(obj)
Traceback (most recent call last):
File "/usr/lib/python3.5/multiprocessing/connection.py", line 404, in _send_bytes
self._send(header + buf)
File "/usr/lib/python3.5/multiprocessing/connection.py", line 404, in _send_bytes
self._send(header + buf)
File "/usr/lib/python3.5/multiprocessing/queues.py", line 247, in _feed
send_bytes(obj)
File "/usr/lib/python3.5/multiprocessing/queues.py", line 247, in _feed
send_bytes(obj)
File "/usr/lib/python3.5/multiprocessing/connection.py", line 368, in _send
n = write(self._handle, buf)
File "/usr/lib/python3.5/multiprocessing/connection.py", line 368, in _send
n = write(self._handle, buf)
BrokenPipeError: [Errno 32] Broken pipe
File "/usr/lib/python3.5/multiprocessing/queues.py", line 247, in _feed
send_bytes(obj)
File "/usr/lib/python3.5/multiprocessing/connection.py", line 200, in send_bytes
self._send_bytes(m[offset:offset + size])
File "/usr/lib/python3.5/multiprocessing/connection.py", line 200, in send_bytes
self._send_bytes(m[offset:offset + size])
File "/usr/lib/python3.5/multiprocessing/connection.py", line 200, in send_bytes
self._send_bytes(m[offset:offset + size])
File "/usr/lib/python3.5/multiprocessing/connection.py", line 200, in send_bytes
self._send_bytes(m[offset:offset + size])
File "/usr/lib/python3.5/multiprocessing/connection.py", line 404, in _send_bytes
self._send(header + buf)
File "/usr/lib/python3.5/multiprocessing/connection.py", line 404, in _send_bytes
self._send(header + buf)
File "/usr/lib/python3.5/multiprocessing/connection.py", line 368, in _send
n = write(self._handle, buf)
Fatal Python error: could not acquire lock for <_io.BufferedWriter name=''> at interpreter shutdown, possibly due to daemon threads

Thread 0x00007fa9a22b9700 (most recent call first):
File "/usr/lib/python3.5/traceback.py", line 101 in print_exception
File "/usr/lib/python3.5/traceback.py", line 159 in print_exc
File "/usr/lib/python3.5/multiprocessing/queues.py", line 264 in _feed
File "/usr/lib/python3.5/threading.py", line 862 in run
File "/usr/lib/python3.5/threading.py", line 914 in _bootstrap_inner
File "/usr/lib/python3.5/threading.py", line 882 in _bootstrap

Thread 0x00007fa9d6647700 (most recent call first):
File "/usr/lib/python3.5/traceback.py", line 101 in print_exception
File "/usr/lib/python3.5/traceback.py", line 159 in print_exc
File "/usr/lib/python3.5/multiprocessing/queues.py", line 264 in _feed
File "/usr/lib/python3.5/threading.py", line 862 in run
File "/usr/lib/python3.5/threading.py", line 914 in _bootstrap_inner
File "/usr/lib/python3.5/threading.py", line 882 in _bootstrap

Thread 0x00007fa9d8e48700 (most recent call first):
File "/usr/lib/python3.5/traceback.py", line 101 in print_exception
File "/usr/lib/python3.5/traceback.py", line 159 in print_exc
File "/usr/lib/python3.5/multiprocessing/queues.py", line 264 in _feed
File "/usr/lib/python3.5/threading.py", line 862 in run
File "/usr/lib/python3.5/threading.py", line 914 in _bootstrap_inner
File "/usr/lib/python3.5/threading.py", line 882 in _bootstrap

Thread 0x00007fa9d9649700 (most recent call first):
File "/usr/lib/python3.5/traceback.py", line 101 in print_exception
File "/usr/lib/python3.5/traceback.py", line 159 in print_exc
File "/usr/lib/python3.5/multiprocessing/queues.py", line 264 in _feed
File "/usr/lib/python3.5/threading.py", line 862 in run
File "/usr/lib/python3.5/threading.py", line 914 in _bootstrap_inner
File "/usr/lib/python3.5/threading.py", line 882 in _bootstrap

Thread 0x00007fa9927fc700 (most recent call first):
File "/usr/lib/python3.5/traceback.py", line 101 in print_exception
File "/usr/lib/python3.5/traceback.py", line 159 in print_exc
File "/usr/lib/python3.5/multiprocessing/queues.py", line 264 in _feed
File "/usr/lib/python3.5/threading.py", line 862 in run
File "/usr/lib/python3.5/threading.py", line 914 in _bootstrap_inner
File "/usr/lib/python3.5/threading.py", line 882 in _bootstrap

Thread 0x00007fa9a0ab6700 (most recent call first):
File "/usr/lib/python3.5/traceback.py", line 101 in print_exception
File "/usr/lib/python3.5/traceback.py", line 159 in print_exc
File "/usr/lib/python3.5/multiprocessing/queues.py", line 264 in _feed
File "/usr/lib/python3.5/threading.py", line 862 in run
File "/usr/lib/python3.5/threading.py", line 914 in _bootstrap_inner
File "/usr/lib/python3.5/threading.py", line 882 in _bootstrap

Thread 0x00007fa993fff700 (most recent call first):
File "/usr/lib/python3.5/traceback.py", line 101 in print_exception
File "/usr/lib/python3.5/traceback.py", line 159 in print_exc
File "/usr/lib/python3.5/multiprocessing/queues.py", line 264 in _feed
File "/usr/lib/python3.5/threading.py", line 862 in run
File "/usr/lib/python3.5/threading.py", line 914 in _bootstrap_inner
File "/usr/lib/python3.5/threading.py", line 882 in _bootstrap

Current thread 0x00007fa9e6ee9700 (most recent call first):
Aborted (core dumped)