fn main() {
    println!("{:?}", {
        fn foo<T: std::fmt::Debug>() -> impl AsRef<[T]> { vec![1] }; let n = foo(); let y = n.as_ref(); let z = n.as_ref(); (n, y, z)
    });
}


/* ~~~~=== stderr ===~~~~
   Compiling playground v0.0.1 (file:///playground)
error[E0277]: `impl std::convert::AsRef<[_]>` doesn't implement `std::fmt::Debug`
 --> src/main.rs:4:22
  |
4 |       println!("{:?}", {
  |  ______________________^
5 | |         fn foo<T: std::fmt::Debug>() -> impl AsRef<[T]> { vec![1] }; let n = foo(); let y = n.as_ref(); let z = n.as_ref(); (n, y, z)
6 | |     });
  | |_____^ `impl std::convert::AsRef<[_]>` cannot be formatted using `:?` because it doesn't implement `std::fmt::Debug`
  |
  = help: the trait `std::fmt::Debug` is not implemented for `impl std::convert::AsRef<[_]>`
  = note: required because of the requirements on the impl of `std::fmt::Debug` for `(impl std::convert::AsRef<[_]>, &[_], &[_])`
  = note: required by `std::fmt::Debug::fmt`

error[E0277]: the trait bound `std::vec::Vec<{integer}>: std::convert::AsRef<[T]>` is not satisfied
 --> src/main.rs:5:41
  |
5 |         fn foo<T: std::fmt::Debug>() -> impl AsRef<[T]> { vec![1] }; let n = foo(); let y = n.as_ref(); let z = n.as_ref(); (n, y, z)
  |                                         ^^^^^^^^^^^^^^^ the trait `std::convert::AsRef<[T]>` is not implemented for `std::vec::Vec<{integer}>`
  |
  = help: the following implementations were found:
            <std::vec::Vec<T> as std::convert::AsRef<[T]>>
            <std::vec::Vec<T> as std::convert::AsRef<std::vec::Vec<T>>>
  = note: the return type of a function must have a statically known size

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0277`.
error: Could not compile `playground`.

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

*/

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

*/