In defense of lock poisoning in Rust (sunshowers.io)

As a Go programmer, I find it quite puzzling that Rust didn't handle panic edge cases as well as Go did with defer keyword. Defer executes at the end of a function, regardless of whether it returned or panic'd, so you can write safe mutex code just by doing something like:

    mutex.Lock()
    defer mutex.Unlock()

And if you need to unlock the mutex in one of multiple places, you can wrap it into a sync.Once.

There must be a reason Rust doesn't do something similar...

I don't think editions can change library APIs. It's a good idea though.