whitespace panic

Cargo.toml

[package]
name = "test"
version = "0.1.0"
authors = ["Raphael Randschau <[email protected]>"]

[dependencies]
serde_macros = "0.3.1"

[dependencies.serde]
git = "https://github.com/oli-obk/rust-serde.git"
rev = 'xml'

ok.rs

#![feature(custom_derive, plugin, custom_attribute)]
#![plugin(serde_macros)]

extern crate serde;
use serde::xml::{
    from_str,
};

#[derive(Serialize, Deserialize)]
#[allow(non_snake_case)]
struct TheSender {
    name: String,
}

#[derive(Serialize, Deserialize)]
#[allow(non_snake_case)]
struct CurrencyCube {
    currency: String,
    rate: String,
}

#[derive(Serialize, Deserialize)]
#[allow(non_snake_case)]
struct InnerCube {
    Cube: Vec<CurrencyCube>,
}

#[derive(Serialize, Deserialize)]
#[allow(non_snake_case)]
struct OuterCube {
    Cube: Vec<InnerCube>,
}

#[derive(Serialize, Deserialize)]
#[allow(non_snake_case)]
struct Envelope {
    subject: String,
    Sender: TheSender,
    Cube: OuterCube,
}

fn main() {
    let s = r#"
        <?xml version="1.0" encoding="UTF-8"?>
        <gesmes:Envelope xmlns:gesmes="http://www.gesmes.org/xml/2002-08-01" xmlns="http://www.ecb.int/vocabulary/2002-08-01/eurofxref">
            <gesmes:subject>Reference rates</gesmes:subject>
            <gesmes:Sender>
                <gesmes:name>European Central Bank</gesmes:name>
            </gesmes:Sender>
            <Cube></Cube>
        </gesmes:Envelope>"#;

    let a: Envelope = from_str(s).unwrap();
    println!("Hello, world!\n{}", a.subject);
}

panic.rs

#![feature(custom_derive, plugin, custom_attribute)]
#![plugin(serde_macros)]

extern crate serde;
use serde::xml::{
    from_str,
};

#[derive(Serialize, Deserialize)]
#[allow(non_snake_case)]
struct TheSender {
    name: String,
}

#[derive(Serialize, Deserialize)]
#[allow(non_snake_case)]
struct CurrencyCube {
    currency: String,
    rate: String,
}

#[derive(Serialize, Deserialize)]
#[allow(non_snake_case)]
struct InnerCube {
    Cube: Vec<CurrencyCube>,
}

#[derive(Serialize, Deserialize)]
#[allow(non_snake_case)]
struct OuterCube {
    Cube: Vec<InnerCube>,
}

#[derive(Serialize, Deserialize)]
#[allow(non_snake_case)]
struct Envelope {
    subject: String,
    Sender: TheSender,
    Cube: OuterCube,
}

fn main() {
    let s = r#"
        <?xml version="1.0" encoding="UTF-8"?>
        <gesmes:Envelope xmlns:gesmes="http://www.gesmes.org/xml/2002-08-01" xmlns="http://www.ecb.int/vocabulary/2002-08-01/eurofxref">
            <gesmes:subject>Reference rates</gesmes:subject>
            <gesmes:Sender>
                <gesmes:name>European Central Bank</gesmes:name>
            </gesmes:Sender>
            <Cube> </Cube>
        </gesmes:Envelope>"#;

    let a: Envelope = from_str(s).unwrap();
    println!("Hello, world!\n{}", a.subject);
}