json.rs

pub trait FromJson {
    fn from_json(j :&Json) -> Result<Self, ValueError>;
}

impl<T: FromJson> FromJson for Option<T> {
    fn from_json(j: &Json) -> Result<Option<T>, ValueError> {
        match *j {
            Null => Ok(None),
            otherwise => {
                let t = FromJson::from_json(&otherwise);

                match t {
                    Ok(thing) => Ok(Some(thing)),
                    Err(v) => Err(v)
                }
            }
        }
    }
}

// util/json.rs:214:12: 214:21 error: unreachable pattern
// util/json.rs:214             otherwise => {