Qi

> It could be nice to accumulate all the errors along with their corresponding addresses instead of returning just the last one. This is a breaking change unless we add...

It would be better to have a reproducible example that leads to the deadlock by using the `PushbackReceiver`.

I think functions like `try_slice` and `try_split_to` are not commonly used. It makes more sense for downstream users to perform manual checks. Bypassing such checks and relying on external libraries...

For me, I don't think the `Debug` harms my use case, so I just want to get your thought on `Display` or not `Display`. It makes sense not to impl...

Did you use `nginx -s reload` to try the new `max_fails` parameters? Since the `nginx -s reload` keeps the original content of shared memory, the old counter will not be...