install dylint

cargo dylint --git https://github.com/lengyijun/explicit_reinitialization/

If a reinitialization dominate all reachable usages, a fresh variable should be introduced.

Make rust more functional programming.

Introduce unnecessary mut. Not good in jumping to definition in ide.

1. Known false positive and false negative: see test
2. increase the peak memory usage

let mut x = vec![1, 2, 3];
x = vec![4, 5, 6];            // x is dropped here
// let x = vec![4, 5, 6];     // x is no longer dropped here, but at the end of the scope

let mut x = 1;
println!("{x}");
x = 2;
println!("{x}");

Use instead:

let mut x = 1;
println!("{x}");
let x = 2;
println!("{x}");

rust-lang/rust-clippy#11687