How to read an integer input from the user in Rust 1.0?

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Here is a version with all optional type annotations and error handling which may be useful for beginners like me:

use std::io;

fn main() {
    let mut input_text = String::new();
    io::stdin()
        .read_line(&mut input_text)
        .expect("failed to read from stdin");

    let trimmed = input_text.trim();
    match trimmed.parse::<u32>() {
        Ok(i) => println!("your integer input: {}", i),
        Err(..) => println!("this was not an integer: {}", trimmed),
    };
}

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