Failed to test panic with Rayon crate

not_panic.rs

use std::sync::mpsc;
use std::thread;

#[derive(Debug)]
enum ThreadMessage {
    Hello,
    Close,
    Panic,
}

fn another_thread(tx: mpsc::Sender<ThreadMessage>, rx: mpsc::Receiver<ThreadMessage>) {
    loop {
        match rx.recv().unwrap() {
            ThreadMessage::Hello => {
                println!("Hello from main");
                tx.send(ThreadMessage::Hello).unwrap();
            }
            ThreadMessage::Close => {
                tx.send(ThreadMessage::Close).unwrap();
                break;
            }
            ThreadMessage::Panic => {
                panic!("panic!");
            }
        }
    }
}

#[test]
#[should_panic]
fn test_panic() {
    let (tx1, _rx1) = mpsc::channel();
    let (tx2, rx2) = mpsc::channel();
    rayon::spawn(move || {
        another_thread(tx1, rx2)
    });

    tx2.send(ThreadMessage::Panic).unwrap();
}

running 1 test
test test_panic ... FAILED
thread '<unnamed>
failures:
' panicked at 'panic!', src/main.rs
:---- test_panic stdout ----
note: test did not panic as expected
24
failures:
:17    test_panic


test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out