[compressedgas]

Even with Rust the browser would still need multiple processes because Rust provides no way to catch a panic. The way to handle panics in Rust is to run the code in its own process and then to handle the failure of that process.

[steveklabnik]

We do provide a way to catch a panic https://doc.rust-lang.org/stable/std/panic/fn.catch_unwind.h...

It's not considered generally idiomatic as an error handling strategy, but it does exist if it's needed.