attempt to bypass poisoned mutex (not work yet)

poisoned.rs

macro_rules! serial_test {
    (fn $name: ident() $body: block) => {
        #[test]
        fn $name() {
            let guard = LOCK.try_lock();
            if let Ok(mutex) = guard {
                $body
            }
            else {
                let err = guard.unwrap_err();
                if let std::sync::TryLockError::Poisoned(p) = err {
                    let _guard = p.get_ref();   // not hit this at all
                    $body
                }
                else {
                    panic!("Error cannot acquire lock");    // always hit this
                }
            }
        };
    }
}