error[E0038]: the trait `T` is not dyn compatible
  --> $DIR/issue-87495.rs:4:25
   |
LL |     const CONST: (bool, dyn T);
   |                         ^^^^^ `T` is not dyn compatible
   |
note: for a trait to be dyn compatible it needs to allow building a vtable
      for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
  --> $DIR/issue-87495.rs:4:11
   |
LL | trait T {
   |       - this trait is not dyn compatible...
LL |     const CONST: (bool, dyn T);
   |           ^^^^^ ...because it contains this associated `const`
   = help: consider moving `CONST` to another trait
help: you might have meant to use `Self` to refer to the implementing type
   |
LL -     const CONST: (bool, dyn T);
LL +     const CONST: (bool, Self);
   |

error: aborting due to 1 previous error

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