error[E0404]: expected trait, found derive macro `Debug`
  --> $DIR/use-placement-resolve.rs:11:14
   |
LL | fn foobar<T: Debug>(x: T) {}
   |              ^^^^^ not a trait
   |
help: consider importing this trait instead
   |
LL + use std::fmt::Debug;
   |

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0404`.