swh-lister_1                        | [2022-02-08 10:29:25,384: INFO/MainProcess] Task swh.lister.maven.tasks.FullMavenLister[95fa1dcb-6fea-41b7-82e3-e07162d45f2d] received
swh-lister_1                        | [2022-02-08 10:29:45,424: INFO/ForkPoolWorker-1] Downloading text index from http://swh-lister-maven-nginx/export.fld.
swh-lister_1                        | [2022-02-08 10:30:05,455: ERROR/ForkPoolWorker-1] Task swh.lister.maven.tasks.FullMavenLister[95fa1dcb-6fea-41b7-82e3-e07162d45f2d] raised unexpected: ValueError("can not serialize 'datetime.datetime' object where tzinfo=None")
swh-lister_1                        | Traceback (most recent call last):
swh-lister_1                        |   File "/srv/softwareheritage/venv/lib/python3.7/site-packages/celery/app/trace.py", line 450, in trace_task
swh-lister_1                        |     R = retval = fun(*args, **kwargs)
swh-lister_1                        |   File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/scheduler/task.py", line 55, in __call__
swh-lister_1                        |     result = super().__call__(*args, **kwargs)
swh-lister_1                        |   File "/srv/softwareheritage/venv/lib/python3.7/site-packages/celery/app/trace.py", line 731, in __protected_call__
swh-lister_1                        |     return self.run(*args, **kwargs)
swh-lister_1                        |   File "/src/swh-lister/swh/lister/maven/tasks.py", line 16, in list_maven_full
swh-lister_1                        |     return lister.run().dict()
swh-lister_1                        |   File "/src/swh-lister/swh/lister/pattern.py", line 130, in run
swh-lister_1                        |     full_stats.origins += self.send_origins(origins)
swh-lister_1                        |   File "/src/swh-lister/swh/lister/pattern.py", line 234, in send_origins
swh-lister_1                        |     ret = self.scheduler.record_listed_origins(batch_origins)
swh-lister_1                        |   File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/core/api/__init__.py", line 181, in meth_
swh-lister_1                        |     return self.post(meth._endpoint_path, post_data)
swh-lister_1                        |   File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/core/api/__init__.py", line 262, in post
swh-lister_1                        |     data = self._encode_data(data)
swh-lister_1                        |   File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/core/api/__init__.py", line 281, in _encode_data
swh-lister_1                        |     return encode_data(data, extra_encoders=self.extra_type_encoders)
swh-lister_1                        |   File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/core/api/serializers.py", line 126, in encode_data_client
swh-lister_1                        |     return msgpack_dumps(data, extra_encoders=extra_encoders)
swh-lister_1                        |   File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/core/api/serializers.py", line 275, in msgpack_dumps
swh-lister_1                        |     default=encode_types,
swh-lister_1                        |   File "/srv/softwareheritage/venv/lib/python3.7/site-packages/msgpack/__init__.py", line 35, in packb
swh-lister_1                        |     return Packer(**kwargs).pack(o)
swh-lister_1                        |   File "msgpack/_packer.pyx", line 294, in msgpack._cmsgpack.Packer.pack
swh-lister_1                        |   File "msgpack/_packer.pyx", line 300, in msgpack._cmsgpack.Packer.pack
swh-lister_1                        |   File "msgpack/_packer.pyx", line 297, in msgpack._cmsgpack.Packer.pack
swh-lister_1                        |   File "msgpack/_packer.pyx", line 231, in msgpack._cmsgpack.Packer._pack
swh-lister_1                        |   File "msgpack/_packer.pyx", line 264, in msgpack._cmsgpack.Packer._pack
swh-lister_1                        |   File "msgpack/_packer.pyx", line 231, in msgpack._cmsgpack.Packer._pack
swh-lister_1                        |   File "msgpack/_packer.pyx", line 231, in msgpack._cmsgpack.Packer._pack
swh-lister_1                        |   File "msgpack/_packer.pyx", line 289, in msgpack._cmsgpack.Packer._pack
swh-lister_1                        | ValueError: can not serialize 'datetime.datetime' object where tzinfo=None