Deserialize Error 128 bit hex number

[Maeda-Naoki]

I can't deserialize 128 bit hex number.
The error message shows "invalid type: string".
I expect to recognize it as a number.

Error message

thread 'main' panicked at 'called Result::unwrap() on an Err value: Message("invalid type: string "0x1234567890ABCDEF1234567890ABCDEF", expected u128", Some(Pos { marker: Marker { index: 7, line: 2, col: 3 }, path: "x" }))', src/main.rs:15:57

use serde::Deserialize;
use indoc::indoc;

#[derive(Debug, Deserialize)]
struct Data {
    x: u128
}

fn main() {
    let yaml = indoc! {"
        ---
        x: 0x1234567890ABCDEF1234567890ABCDEF
    "};

    // ★Deserialize error
    let deserialized: Data = serde_yaml::from_str(yaml).unwrap();
}

[Akaame]

Using yaml_rust

extern crate yaml_rust;
use yaml_rust::{YamlLoader, YamlEmitter};

fn main() {
    let s = r#"
        x: 0x1234567890ABCDEF1234567890ABCDEF
        y: 0x1234567890AB
    "#;
    let docs = YamlLoader::load_from_str(s).unwrap();
    println!("{:?}", docs);
    // prints
    // [Hash({String("x"): String("0x1234567890ABCDEF1234567890ABCDEF"), String("y"): Integer(20015998341291)})]
}

Related:
This PR added i128 and u128 capabilities. You can deserialize stuff like

---
x: 18446744073709551615555555555

The problem only exists for HEX representation (because of underlying library behaviour shown above).

[dtolnay]

This is fixed in 0.9.

[src/main.rs:17] deserialized = Data {
    x: 24197857200151252728969465429440056815,
}