warning: to use a constant of type `NoDerive` in a pattern, `NoDerive` must be annotated with `#[derive(PartialEq)]`
  --> $DIR/cant-hide-behind-doubly-indirect-embedded.rs:24:9
   |
LL |         WRAP_DOUBLY_INDIRECT_INLINE => { panic!("WRAP_DOUBLY_INDIRECT_INLINE 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 #120362 <https://github.com/rust-lang/rust/issues/120362>
   = note: the traits must be derived, manual `impl`s are not sufficient
   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details
note: the lint level is defined here
  --> $DIR/cant-hide-behind-doubly-indirect-embedded.rs:7:9
   |
LL | #![warn(indirect_structural_match)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: 1 warning emitted

Future incompatibility report: Future breakage diagnostic:
warning: to use a constant of type `NoDerive` in a pattern, `NoDerive` must be annotated with `#[derive(PartialEq)]`
  --> $DIR/cant-hide-behind-doubly-indirect-embedded.rs:24:9
   |
LL |         WRAP_DOUBLY_INDIRECT_INLINE => { panic!("WRAP_DOUBLY_INDIRECT_INLINE 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 #120362 <https://github.com/rust-lang/rust/issues/120362>
   = note: the traits must be derived, manual `impl`s are not sufficient
   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details
note: the lint level is defined here
  --> $DIR/cant-hide-behind-doubly-indirect-embedded.rs:7:9
   |
LL | #![warn(indirect_structural_match)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^