warning: the feature `adt_const_params` is incomplete and may not be safe to use and/or cause compiler crashes
  --> $DIR/refs_check_const_eq-issue-88384.rs:4:12
   |
LL | #![feature(adt_const_params)]
   |            ^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(incomplete_features)]` on by default
   = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information

warning: 1 warning emitted