diff --git a/clippy_lints/src/loops/never_loop.rs b/clippy_lints/src/loops/never_loop.rs
index 32de20f6531fe..5448360049d2e 100644
--- a/clippy_lints/src/loops/never_loop.rs
+++ b/clippy_lints/src/loops/never_loop.rs
@@ -178,9 +178,9 @@ fn never_loop_expr(expr: &Expr<'_>, main_loop_id: HirId) -> NeverLoopResult {
                 InlineAsmOperand::In { expr, .. } | InlineAsmOperand::InOut { expr, .. } => {
                     never_loop_expr(expr, main_loop_id)
                 },
-                InlineAsmOperand::Out { expr, .. } => never_loop_expr_all(&mut expr.iter(), main_loop_id),
+                InlineAsmOperand::Out { expr, .. } => never_loop_expr_all(&mut expr.iter().copied(), main_loop_id),
                 InlineAsmOperand::SplitInOut { in_expr, out_expr, .. } => {
-                    never_loop_expr_all(&mut once(in_expr).chain(out_expr.iter()), main_loop_id)
+                    never_loop_expr_all(&mut once(*in_expr).chain(out_expr.iter().copied()), main_loop_id)
                 },
                 InlineAsmOperand::Const { .. }
                 | InlineAsmOperand::SymFn { .. }
diff --git a/clippy_lints/src/manual_bits.rs b/clippy_lints/src/manual_bits.rs
index 60bbcde4f1de5..940601a44fb07 100644
--- a/clippy_lints/src/manual_bits.rs
+++ b/clippy_lints/src/manual_bits.rs
@@ -105,7 +105,7 @@ fn get_size_of_ty<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> Option<
         if let Some(def_id) = cx.qpath_res(count_func_qpath, count_func.hir_id).opt_def_id();
         if cx.tcx.is_diagnostic_item(sym::mem_size_of, def_id);
         then {
-            cx.typeck_results().node_substs(count_func.hir_id).types().next().map(|resolved_ty| (real_ty, resolved_ty))
+            cx.typeck_results().node_substs(count_func.hir_id).types().next().map(|resolved_ty| (*real_ty, resolved_ty))
         } else {
             None
         }
diff --git a/clippy_lints/src/utils/author.rs b/clippy_lints/src/utils/author.rs
index 429c64ac15641..3ffcaa90af3e5 100644
--- a/clippy_lints/src/utils/author.rs
+++ b/clippy_lints/src/utils/author.rs
@@ -595,7 +595,7 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> {
     }
 
     fn body(&self, body_id: &Binding<hir::BodyId>) {
-        let expr = &self.cx.tcx.hir().body(body_id.value).value;
+        let expr = self.cx.tcx.hir().body(body_id.value).value;
         bind!(self, expr);
         out!("let {expr} = &cx.tcx.hir().body({body_id}).value;");
         self.expr(expr);
diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs
index 997e773b5da4e..f3a08e98688e9 100644
--- a/clippy_utils/src/lib.rs
+++ b/clippy_utils/src/lib.rs
@@ -337,7 +337,7 @@ pub fn qpath_generic_tys<'tcx>(qpath: &QPath<'tcx>) -> impl Iterator<Item = &'tc
         .map_or(&[][..], |a| a.args)
         .iter()
         .filter_map(|a| match a {
-            hir::GenericArg::Type(ty) => Some(ty),
+            hir::GenericArg::Type(ty) => Some(*ty),
             _ => None,
         })
 }
@@ -1812,7 +1812,7 @@ pub fn is_expr_identity_function(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool
             }
         };
 
-        let mut expr = &func.value;
+        let mut expr = func.value;
         loop {
             match expr.kind {
                 #[rustfmt::skip]