Parsing tuple struct

[KeenS]

Parsing (1-element) tuple structs into their inner type fail.

#[derive(Deserialize, Serialize, PartialEq, Debug)]
struct UserId(u32);

#[derive(Deserialize, Serialize, PartialEq, Debug)]
struct Query {
    user_id: UserId,
}

fn main() {
    let query = "user_id=1";
    
    println!("{:?}", from_str::<Query>(query));
      // Err(Error { err: "invalid type: string \"1\", expected tuple struct UserId" })
    println!("{:?}", to_string(Query{user_id: UserId(1)}));
      // Ok("user_id=1")
}

I hope it could do. FYI, serde_json can do it.

[nox]

I would accept a patch for that.