[HW 6] program stopped while running stack_queue

[greenhestu]

fn stack_queue() {
    const THREADS: usize = 8;
    const ITER: usize = 1024 * 16;

    let stack = Stack::default();
    let queue = Queue::default();
    scope(|s| {
        for _ in 0..THREADS {
            s.spawn(|| {
                for i in 0..ITER {
                    stack.push(i);
                    queue.push(i);
                    stack.try_pop();
                    queue.try_pop();
                    collect();
                    if i % 1000 == 0 {
                        println!("{:?}, {:?} is finished", thread::current().id(), i);
                    }
                }
                println!("died");
            });
        }
    });
    assert!(stack.try_pop().is_none());
}

running 1 test
ThreadId(3), 0 is finished
ThreadId(4), 0 is finished
ThreadId(5), 0 is finished
ThreadId(6), 0 is finished
ThreadId(9), 0 is finished
ThreadId(10), 0 is finished
ThreadId(8), 0 is finished
ThreadId(7), 0 is finished
ThreadId(7), 1000 is finished
ThreadId(4), 1000 is finished
ThreadId(9), 1000 is finished
ThreadId(9), 2000 is finished
ThreadId(9), 3000 is finished
ThreadId(9), 4000 is finished
ThreadId(9), 5000 is finished
ThreadId(9), 6000 is finished
ThreadId(9), 7000 is finished
ThreadId(9), 8000 is finished
ThreadId(9), 9000 is finished
ThreadId(9), 10000 is finished
ThreadId(9), 11000 is finished
ThreadId(9), 12000 is finished
ThreadId(9), 13000 is finished
ThreadId(9), 14000 is finished
ThreadId(9), 15000 is finished
ThreadId(9), 16000 is finished
died

Hi,
I have a problem that stack_queue test is not end
I put println! in stack_queue and the result is above

To figure out the reason for stopping, I also put println! in the loop of my code
but after printing "died" it doesn't print anything

Can you give me some hints to solve this problem?

[Lee-Janggun]

Does #787 (comment) help?

[greenhestu]

Thank you for your comment

I put println in Drop for Retireset
the program successfully exits the loop..

[greenhestu]

The cause of the problem was validate
There was an infinite loop in protect