use std::thread;

struct D(u32);

impl Drop for D {
    fn drop(&mut self) {
        println!("Dropping {}", self.0);
    }
}

fn main() {
    fn die() -> D { panic!("Oh no"); }
    let g = thread::spawn(|| {
        let _a: Vec<_>      = vec![D(101), D(102), D(103)];
        let _d: Vec<_>      = vec![D(401), D(402), die(), D(404)];
    });
    assert!(g.join().is_err());
}