warning: to use a constant of type `NoDerive` in a pattern, `NoDerive` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/cant-hide-behind-indirect-struct-param.rs:24:9
   |
LL |         WRAP_INDIRECT_PARAM => { panic!("WRAP_INDIRECT_PARAM matched itself"); }
   |         ^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #62411 <https://github.com/rust-lang/rust/issues/62411>
   = note: the traits must be derived, manual `impl`s are not sufficient
   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
note: the lint level is defined here
  --> $DIR/cant-hide-behind-indirect-struct-param.rs:7:9
   |
LL | #![warn(indirect_structural_match)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: 1 warning emitted