error[E0038]: the trait `Bar` cannot be made into an object
  --> $DIR/object-safety-associated-consts.rs:12:30
   |
LL |     const X: usize;
   |           - the trait cannot contain associated consts like `X`
...
LL | fn make_bar<T:Bar>(t: &T) -> &dyn Bar {
   |                              ^^^^^^^^ the trait `Bar` cannot be made into an object

error: aborting due to previous error

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