Pulp

On a fresh pulp3 installation, running consecutive 2to3 migrations results in following error (first migration ran without error):

Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]: Traceback (most recent call last):
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/rq/worker.py", line 936, in perform_job
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     rv = job.perform()
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/rq/job.py", line 684, in perform
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     self._result = self._execute()
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/rq/job.py", line 690, in _execute
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     return self.func(*self.args, **self.kwargs)
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/pulp_2to3_migration/app/tasks/migrate.py", line 139, in migrate_from_pulp2
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     migrate_content(plan)
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/pulp_2to3_migration/app/migration.py", line 36, in migrate_content
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     plugin.migrator.migrate_content_to_pulp3()
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/pulp_2to3_migration/app/plugin/rpm/migrator.py", line 140, in migrate_content_to_pulp3
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     loop.run_until_complete(dm.create())
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib64/python3.6/asyncio/base_events.py", line 484, in run_until_complete
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     return future.result()
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/pulp_2to3_migration/app/plugin/content.py", line 88, in create
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     await pipeline
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/pulpcore/plugin/stages/api.py", line 225, in create_pipeline
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     await asyncio.gather(*futures)
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/pulpcore/plugin/stages/api.py", line 43, in __call__
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     await self.run()
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/pulpcore/plugin/stages/artifact_stages.py", line 244, in run
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     RemoteArtifact.objects.bulk_get_or_create(self._needed_remote_artifacts(batch))
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:   File "/usr/lib/python3.6/site-packages/pulpcore/plugin/stages/artifact_stages.py", line 296, in _needed_remote_artifacts
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]:     if remote_artifact.remote_id == d_artifact.remote.pk:
Nov 19 19:04:08 lxserv2285.smhi.se rq[1208174]: AttributeError: 'NoneType' object has no attribute 'pk'

The first couple of migrations resulted in #7842. Next day, new migration attempt and now I get this, which is produced earlier in the migration process than the previous error.

Running in an rpm-based installation on RHEL8:

python3-pulp-rpm-3.7.0-1.el8.noarch
python3-pulpcore-3.7.3-1.el8.noarch
 python3-pulp-2to3-migration-0.5.1-1.el8.noarch