That said, if a junior brings up a question like "why does this error for some tests, but not others?"
records = some_orm_thing()
some_model_ids, other_ids = map(list, zip(*records))
The answer is obvious. Some tests return no records for the ORM thing and that doesn't unpack. If you ask this type of question it makes you look bad. I'm not saying it's the end of the world or anything, but we should at least be realistic about how juniors are treated. A private, friendly slack message is much less likely to get them fired than a post in a channel or pull request.