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-rw-r--r--compiler/rustc_trait_selection/src/solve/normalize.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/compiler/rustc_trait_selection/src/solve/normalize.rs b/compiler/rustc_trait_selection/src/solve/normalize.rs
index f51f4edb933..9a12a2ad3dc 100644
--- a/compiler/rustc_trait_selection/src/solve/normalize.rs
+++ b/compiler/rustc_trait_selection/src/solve/normalize.rs
@@ -194,7 +194,7 @@ impl<'tcx> FallibleTypeFolder<TyCtxt<'tcx>> for NormalizationFolder<'_, 'tcx> {
                 mapped_regions,
                 mapped_types,
                 mapped_consts,
-                &mut self.universes,
+                &self.universes,
                 result,
             ))
         } else {
@@ -224,7 +224,7 @@ impl<'tcx> FallibleTypeFolder<TyCtxt<'tcx>> for NormalizationFolder<'_, 'tcx> {
                 mapped_regions,
                 mapped_types,
                 mapped_consts,
-                &mut self.universes,
+                &self.universes,
                 result,
             ))
         } else {