How should panics be handled?

[kirillsalykin]

Currently if task fails with a panic - it is stuck (eg it being retried and retried).

I would expect any panic should just mark task as failed.

On related note, I think there should be a way to mark step as failed, like To::failure()

[maxcountryman]

I agree: as it stands, panics are simply not handled. I suspect we may want to try to catch panics so that we can set the state to failed--I haven't had the time to look into this.

On related note, I think there should be a way to mark step as failed, like To::failure()

How would you like this to pair with task::Error::Fatal? Currently, a task can return Err(Error::Fatal("oh no")) and the worker will mark it as failed accordingly. This could be encapsulated with To as well.