error[E0038]: the trait `NotObjectSafe` cannot be made into an object
  --> $DIR/coherence-impl-trait-for-trait-object-safe.rs:7:24
   |
LL | impl NotObjectSafe for dyn NotObjectSafe { }
   |                        ^^^^^^^^^^^^^^^^^ `NotObjectSafe` cannot be made into an object
   |
   = help: consider moving `eq` to another trait
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
  --> $DIR/coherence-impl-trait-for-trait-object-safe.rs:6:43
   |
LL | trait NotObjectSafe { fn eq(&self, other: Self); }
   |       -------------                       ^^^^ ...because method `eq` references the `Self` type in this parameter
   |       |
   |       this trait cannot be made into an object...

error: aborting due to previous error

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