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warning: to use a constant of type `NoDerive` in a pattern, the constant's initializer must be trivial or `NoDerive` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/warn_corner_cases.rs:26:47
   |
LL |     match None { Some(_) => panic!("whoops"), INDEX => dbg!(INDEX), };
   |                                               ^^^^^
   |
   = 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 #73448 <https://github.com/rust-lang/rust/issues/73448>
   = 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: `#[warn(nontrivial_structural_match)]` on by default

warning: to use a constant of type `NoDerive` in a pattern, the constant's initializer must be trivial or `NoDerive` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/warn_corner_cases.rs:32:47
   |
LL |     match None { Some(_) => panic!("whoops"), CALL => dbg!(CALL), };
   |                                               ^^^^
   |
   = 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 #73448 <https://github.com/rust-lang/rust/issues/73448>
   = 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

warning: to use a constant of type `NoDerive` in a pattern, the constant's initializer must be trivial or `NoDerive` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/warn_corner_cases.rs:38:47
   |
LL |     match None { Some(_) => panic!("whoops"), METHOD_CALL => dbg!(METHOD_CALL), };
   |                                               ^^^^^^^^^^^
   |
   = 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 #73448 <https://github.com/rust-lang/rust/issues/73448>
   = 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

warning: 3 warnings emitted