Literal out of range for u8 in Rust

So I'm totally new to Rust world, and I was trying to make a program that generates random numbers from 0 to 255

Seems so simple! so what I did is this

extern crate rand;
use rand::Rng;

fn main() {
    println!("Guess the number!");
    let random_number: u8 = rand::thread_rng().gen_range(0, 255);

    println!("Your random number is {}", random_number);
}

Now this works fine but the problem with this approach is that number 255 will not be included because according to http://ift.tt/1PYpMyt

The gen_range method takes two numbers as arguments and generates a random number between them. It’s inclusive on the lower bound but exclusive on the upper bound

When i try to do this

let random_number: u8 = rand::thread_rng().gen_range(0, 256);

Rust will generate a warning! because we all know that u8 accepts values from 0 to 255.

My question is how to work around this without needing to change random_number data type?