Cannot use serde_bytes inside of untagged enum

[dtolnay]

In the following code, S can be deserialized from a JSON array of bytes but the untagged enum E cannot.

#[macro_use]
extern crate serde_derive;

extern crate serde;
extern crate serde_json;
extern crate serde_bytes;

#[derive(Deserialize, Debug)]
#[serde(untagged)]
enum E {
    S(S),
}

#[derive(Deserialize, Debug)]
struct S {
    #[serde(with = "serde_bytes")]
    bytes: Vec<u8>,
}

fn main() {
    let j = "{\"bytes\":[5,4,3,2]}";
    println!("{:?}", serde_json::from_str::<S>(j).unwrap());
    println!("{}", serde_json::from_str::<E>(j).unwrap_err());
}

S { bytes: [5, 4, 3, 2] }
data did not match any variant of untagged enum E

[dtolnay]

Fixed in 3c4961c.