src/test/ui/wf/wf-object-safe.stderr

   1 error[E0038]: the trait `A` cannot be made into an object
   2   --> $DIR/wf-object-safe.rs:9:13
   3    |
   4 LL |     let _x: &dyn A;
   5    |             ^^^^^^ `A` cannot be made into an object
   6    |
   7    = help: consider moving `foo` to another trait
   8 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>
   9   --> $DIR/wf-object-safe.rs:5:23
  10    |
  11 LL | trait A {
  12    |       - this trait cannot be made into an object...
  13 LL |     fn foo(&self, _x: &Self);
  14    |                       ^^^^^ ...because method `foo` references the `Self` type in this parameter
  15
  16 error: aborting due to previous error
  17
  18 For more information about this error, try `rustc --explain E0038`.