[2020-07-09 16:11:00,098: ERROR/MainProcess] Received invalid task message: Refusing to deserialize untrusted content of type msgpack (application/x-msgpack)
File "/home/tony/work/inria/repo/swh/swh-environment/swh-loader-core/.tox/py3/lib/python3.7/site-packages/celery/worker/consumer/consumer.py", line 571, in on_task_received
callbacks,
File "/home/tony/work/inria/repo/swh/swh-environment/swh-loader-core/.tox/py3/lib/python3.7/site-packages/celery/worker/strategy.py", line 137, in task_message_handler
if body is None and 'args' not in message.payload:
File "/home/tony/work/inria/repo/swh/swh-environment/swh-loader-core/.tox/py3/lib/python3.7/site-packages/kombu/message.py", line 208, in payload
return self._decoded_cache if self._decoded_cache else self.decode()
File "/home/tony/work/inria/repo/swh/swh-environment/swh-loader-core/.tox/py3/lib/python3.7/site-packages/kombu/message.py", line 193, in decode
self._decoded_cache = self._decode()
File "/home/tony/work/inria/repo/swh/swh-environment/swh-loader-core/.tox/py3/lib/python3.7/site-packages/kombu/message.py", line 198, in _decode
self.content_encoding, accept=self.accept)
File "/home/tony/work/inria/repo/swh/swh-environment/swh-loader-core/.tox/py3/lib/python3.7/site-packages/kombu/serialization.py", line 253, in loads