error[E0038]: the trait `NotObjectSafe` cannot be made into an object
  --> $DIR/coherence-impl-trait-for-trait-object-safe.rs:11:6
   |
LL | impl NotObjectSafe for NotObjectSafe { }
   |      ^^^^^^^^^^^^^ the trait `NotObjectSafe` cannot be made into an object
   |
   = note: method `eq` references the `Self` type in its arguments or return type

error: aborting due to previous error

For more information about this error, try `rustc --explain E0038`.