Minimal example for `Arc<str>` bincode fail

Cargo.toml

[package]
name = "minimal_example"
version = "0.1.0"
edition = "2021"


[dependencies]
bincode = "2.0.0-rc.1"

main.rs

use std::sync::Arc;
use bincode;

fn main() {
  let val: Arc<str> = std::sync::Arc::from("Example String");
  let config = bincode::config::standard();
  let encoded = bincode::encode_to_vec(val, config).unwrap();


  for byte in encoded {
    print!(" {byte:02x}");
  }
  println!();
}
    
// Error message:
//    error[E0277]: the size for values of type `str` cannot be known at compilation time
//  --> minimal_example/src/main.rs:7:40
//   |
//7  |   let encoded = bincode::encode_to_vec(val, config).unwrap();
//   |                 ---------------------- ^^^ doesn't have a size known at compile-time
//   |                 |
//   |                 required by a bound introduced by this call
//   |
//   = help: the trait `Sized` is not implemented for `str`
//   = note: required because of the requirements on the impl of `Encode` for `Arc<str>`
//note: required by a bound in `encode_to_vec`
//  --> /Users/nalp/.cargo/registry/src/github.com-1ecc6299db9ec823/bincode-2.0.0-rc.1/src/features/impl_alloc.rs:42:25
//   |
//42 | pub fn encode_to_vec<E: enc::Encode, C: Config>(val: E, config: C) -> Result<Vec<u8>, EncodeError> {
//   |                         ^^^^^^^^^^^ required by this bound in `encode_to_vec`