crc.rs

extern crate crc;
use crc::{crc32, Hasher32};

fn main(){
    let foo = String::from("foo bar baz");
    let foo_bytes = foo.into_bytes();
    println!("foo bytes: {:?}", &foo_bytes);
    println!("foo bar baz: {}",crc32::checksum_castagnoli(&foo_bytes));
}

Result:

cargo run
     Running `target/debug/scratch`
foo bytes: [102, 111, 111, 32, 98, 97, 114, 32, 98, 97, 122]
foo bar baz: 1599983188