The CI runs for swh-graph might hang badly on test_api_client.py, here's the [[ https://jenkins.softwareheritage.org/job/DGRPH/job/tests/199/console | most recent exampe ]].
This specific issues is solved now, but it really shouldn't happen that test running hangs, see below for an analysis by @olasd on how to avoid that exception aren't forwarded, blocking test abortion.