Remove redundant [..]s

2 files changed, 3 insertions, 3 deletions

diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs
index 6128c119b6b..d9a5aea4d95 100644
--- a/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs
+++ b/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs
@@ -231,7 +231,7 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
         if let Ok(Some(command)) =
             OnUnimplementedDirective::of_item(self.tcx, trait_ref.def_id, def_id)
         {
-            command.evaluate(self.tcx, trait_ref, &flags[..])
+            command.evaluate(self.tcx, trait_ref, &flags)
         } else {
             OnUnimplementedNote::default()
         }
diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
index 2e87d6fdd3d..d0b61b24308 100644
--- a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
+++ b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
@@ -804,7 +804,7 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
         } else if let ObligationCauseCode::BindingObligation(_, _)
         | ObligationCauseCode::ItemObligation(_) = &*code
         {
-            try_borrowing(*poly_trait_ref, &never_suggest_borrow[..])
+            try_borrowing(*poly_trait_ref, &never_suggest_borrow)
         } else {
             false
         }
@@ -1132,7 +1132,7 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
             <https://doc.rust-lang.org/book/ch17-02-trait-objects.html\
             #using-trait-objects-that-allow-for-values-of-different-types>";
         let has_dyn = snippet.split_whitespace().next().map_or(false, |s| s == "dyn");
-        let trait_obj = if has_dyn { &snippet[4..] } else { &snippet[..] };
+        let trait_obj = if has_dyn { &snippet[4..] } else { &snippet };
         if only_never_return {
             // No return paths, probably using `panic!()` or similar.
             // Suggest `-> T`, `-> impl Trait`, and if `Trait` is object safe, `-> Box<dyn Trait>`.