fn main() {
    // let mut t = 1;   // triggered
    for mut i in 0..5 { // not triggered
        print!("{} ", i);
    }
    for _ in 0..5 {
        let mut x = 1;  // not triggered
        print!("{} ", x);
    }
    for _ in 0..5 {
        if true {
            match 2 {
                mut x => print!("{} ", x), // not triggered
            }
        }
    }
}