这段程序会输出哪一对值？

use std::rc::Rc;

fn main() {
    let owner = Rc::new(String::from("ready"));
    let weak = Rc::downgrade(&owner);
    let other = Rc::clone(&owner);
    drop(owner);
    println!("{}", weak.upgrade().is_some());
    drop(other);
    println!("{}", weak.upgrade().is_some());
}