Make `type_marked_structural` private

src/librustc_trait_selection/traits/mod.rs

@@ -60,7 +60,6 @@
 pub use self::specialize::specialization_graph::FutureCompatOverlapErrorKind;
 pub use self::specialize::{specialization_graph, translate_substs, OverlapError};
 pub use self::structural_match::search_for_structural_match_violation;
-pub use self::structural_match::type_marked_structural;
 pub use self::structural_match::NonStructuralMatchTy;
 pub use self::util::{elaborate_predicates, elaborate_trait_ref, elaborate_trait_refs};
 pub use self::util::{expand_trait_aliases, TraitAliasExpander};

src/librustc_trait_selection/traits/structural_match.rs

@@ -66,7 +66,7 @@ pub fn search_for_structural_match_violation<'tcx>(
 ///
 /// Note that this does *not* recursively check if the substructure of `adt_ty`
 /// implements the traits.
-pub fn type_marked_structural(
+fn type_marked_structural(
     infcx: &InferCtxt<'_, 'tcx>,
     adt_ty: Ty<'tcx>,
     cause: ObligationCause<'tcx>,