fn main() {
    println!("{:?}", {
        struct Foo(impl Iterator<Item=Vec<u8>>);
    });
}


/* ~~~~=== stderr ===~~~~
   Compiling playground v0.0.1 (file:///playground)
error[E0562]: `impl Trait` not allowed outside of function and inherent method return types
 --> src/main.rs:5:20
  |
5 |         struct Foo(impl Iterator<Item=Vec<u8>>);
  |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0562`.
error: Could not compile `playground`.

To learn more, run the command again with --verbose.

*/

/* ~~~~=== stdout ===~~~~

*/