P.FUD.01 Should rebind variables which pass into closure

[Description]

By default, closure captures environment variables with borrow, or it is also allowed to pass environment variables into closure with move keyword.

It is more readable to rebind and regroup these variables which pass into closure.

[Bad Case]

#![allow(unused)]
fn main() {
use std::rc::Rc;
let num1 = Rc::new(1);
let num2 = Rc::new(2);
let num3 = Rc::new(3);
let closure = {
    // ownership of `num1` has been moved
    let num2 = num2.clone();
    let num3 = num3.as_ref();
    move || {
        *num1 + *num2+ *num3; // Not Good.
    }
};
}

[Good Case]

#![allow(unused)]
fn main() {
use std::rc::Rc;

let num1 = Rc::new(1);
let num2 = Rc::new(2);
let num3 = Rc::new(3);

// Good: rebind variables seperately, which would pass into closure.
let num2_cloned = num2.clone();
let num3_borrowed = num3.as_ref();
let closure = move || {
    *num1 + *num2_cloned + *num3_borrowed; // Good.
};
}