#![feature(specialization)]

fn main() {
    println!("{:?}", {
         use ::std::fmt::{Debug, Display}; trait Foo {} impl<T: Debug> Foo for T {} impl<T: Display> Foo for T {} impl<T: Debug + Display> Foo for T {}
    });
}


/* ~~~~=== stderr ===~~~~
   Compiling playground v0.0.1 (file:///playground)
error[E0119]: conflicting implementations of trait `main::Foo`:
 --> src/main.rs:5:85
  |
5 |          use ::std::fmt::{Debug, Display}; trait Foo {} impl<T: Debug> Foo for T {} impl<T: Display> Foo for T {} impl<T: Debug + Display> Foo for T {}
  |                                                         ------------------------    ^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation
  |                                                         |
  |                                                         first implementation here

error: aborting due to previous error

For more information about this error, try `rustc --explain E0119`.
error: Could not compile `playground`.

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

*/

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

*/