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-rw-r--r--compiler/rustc_passes/src/dead.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_passes/src/dead.rs b/compiler/rustc_passes/src/dead.rs
index a4b324ba057..f567dd83bc1 100644
--- a/compiler/rustc_passes/src/dead.rs
+++ b/compiler/rustc_passes/src/dead.rs
@@ -547,7 +547,7 @@ impl DeadVisitor<'tcx> {
         let def_id = self.tcx.hir().local_def_id(id);
         let inherent_impls = self.tcx.inherent_impls(def_id);
         for &impl_did in inherent_impls.iter() {
-            for &item_did in &self.tcx.associated_item_def_ids(impl_did)[..] {
+            for item_did in self.tcx.associated_item_def_ids(impl_did) {
                 if let Some(did) = item_did.as_local() {
                     let item_hir_id = self.tcx.hir().local_def_id_to_hir_id(did);
                     if self.live_symbols.contains(&item_hir_id) {