Code shared from the Rust Playground

playground.rs

pub struct Thing {
    // many big fields here
}

// I can't change this definition
pub struct Wrapper {
    pub thing: Thing, // I can't change this to a reference, it's used elsewhere as a container
    // other fields
}
impl Wrapper {
    pub fn act(&self){
    }
}

fn main() {
    let v = vec![Thing{}, Thing{}, Thing{}, Thing{}]; // more elements
    let z = 2;
    for i in 0..z {
        // I temporarly need a wrapper from v[i] to call act
        // but I don't want to consume my vector so I want to
        // put it back
        // I don't want to clone the thing
        let w = Wrapper {
            thing: v[i] // can't work because it would be a move
        };
        w.act();
        // I don't need w anymore
    }
}