hypothesis 6 breaks some tests that uses both pytest fixtures and hypothesis generative tests (using @given for example).

See https://hypothesis.readthedocs.io/en/latest/healthchecks.html

hypothesis is used in (not checked if it is broken in each of these):

• swh-core
• swh-indexer
• swh-journal
• swh-model
• swh-scheduler
• swh-storage
• swh-web