fn main() {
    println!("{:?}", {
        enum E { A, B } 0 as E
    });
}


/* ~~~~=== stderr ===~~~~
   Compiling playground v0.0.1 (file:///playground)
error[E0277]: `main::E` doesn't implement `std::fmt::Debug`
 --> src/main.rs:4:22
  |
4 |       println!("{:?}", {
  |  ______________________^
5 | |         enum E { A, B } 0 as E
6 | |     });
  | |_____^ `main::E` cannot be formatted using `:?`; add `#[derive(Debug)]` or manually implement `std::fmt::Debug`
  |
  = help: the trait `std::fmt::Debug` is not implemented for `main::E`
  = note: required by `std::fmt::Debug::fmt`

error[E0605]: non-primitive cast: `{integer}` as `main::E`
 --> src/main.rs:5:25
  |
5 |         enum E { A, B } 0 as E
  |                         ^^^^^^
  |
  = note: an `as` expression can only be used to convert between primitive types. Consider using the `From` trait

error: aborting due to 2 previous errors

Some errors occurred: E0277, E0605.
For more information about an error, try `rustc --explain E0277`.
error: Could not compile `playground`.

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

*/

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

*/