error[E0038]: the trait `Trait` cannot be made into an object
  --> $DIR/associated-const-in-trait.rs:7:6
   |
LL | impl dyn Trait {
   |      ^^^^^^^^^ `Trait` cannot be made into an object
   |
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/associated-const-in-trait.rs:4:11
   |
LL | trait Trait {
   |       ----- this trait cannot be made into an object...
LL |     const N: usize;
   |           ^ ...because it contains this associated `const`
   = help: consider moving `N` to another trait

error: aborting due to 1 previous error

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