tests/ui/panics/panic-task-name-none.rs

//@ run-fail
//@ regex-error-pattern: thread '<unnamed>' \(\d+\) panicked
//@ error-pattern: test
//@ needs-threads

use std::thread;

fn main() {
    let r: Result<(), _> = thread::spawn(move || {
        panic!("test");
    })
    .join();
    assert!(r.is_ok());
}