extern crate istring;
use istring::IString;

fn main() {
    let foo: Vec<u8> = vec![1, 2, 3, 4, 5];
    let foo_string = String::from_utf8(foo).unwrap();
    let foo_attempt1 = IString::from(foo_string);
    let foo_attempt2 = IString::from_utf8(foo).unwrap();
    //                 ^^^^^^^^^^^^^^^^^^ cannot infer type for `A`
    println!("foo is {:#}, {:#}", foo_attempt1, foo_attempt2);
}