Security measure to implement a password field on rust?

Question

Are there any security measures that I should implement when I do a password cli field on rust? Will using readline() method from the std::io::Stdin be enough? Something like this:

use std::io;

fn main() -> io::Result<()> {
    let mut buffer = String::new();
    let stdin = io::stdin(); // We get `Stdin` here.
    stdin.read_line(&mut buffer)?;
    Ok(())
}

Edit: Without using external crates like rpassword or using other programming language