In Rust, a panic terminates the current thread but is not sent back to the main thread. The solution we are told is to use join. However, this blocks the currently executing thread. So if my main thread spawns 2 threads, I cannot join both of them and immediately get a panic back.
let jh1 = thread::spawn(|| { println!("thread 1"); sleep(1000000); };
let jh2 = thread::spawn(|| { panic!("thread 2") };
In the above, if I join on thread 1 and then on thread 2 I will be waiting for 1 before ever receiving a panic from either thread
Although in some cases I desire the current behavior, my goal is to default to Go's behavior where I can spawn a thread and have it panic on that thread and then immediately end the main thread. (The Go specification also documents a protect function, so it is easy to achieve Rust behavior in Go).