If the issue is that everyone has to write an extra unwrap, then a good step would be to make lock panic automatically in the 2027 edition, and add a lock_or_po

If the issue is that everyone has to write an extra unwrap, then a good step would be to make lock panic automatically in the 2027 edition, and add a lock_or_poison method for the current behavior. But I think removing poisoning altogether from the default mutex, such that it silently unlocks on panic, would be very bad. The silent-unlock behavior is terrible with async cancellations and terrible with panics.