diff --git a/Cargo.toml b/Cargo.toml
index dc339f625e..0e8600f65d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -169,7 +169,6 @@ new_ret_no_self = "allow"
 ## Following lints should be tackled at some point
 borrowed_box = "allow"
 borrow_deref_ref = "allow"
-clone_on_copy = "allow"
 derivable_impls = "allow"
 derived_hash_with_manual_eq = "allow"
 explicit_auto_deref = "allow"
diff --git a/crates/hir-def/src/body.rs b/crates/hir-def/src/body.rs
index 36d810bbe8..adc5b4520b 100644
--- a/crates/hir-def/src/body.rs
+++ b/crates/hir-def/src/body.rs
@@ -369,7 +369,7 @@ impl BodySourceMap {
     }
 
     pub fn label_syntax(&self, label: LabelId) -> LabelSource {
-        self.label_map_back[label].clone()
+        self.label_map_back[label]
     }
 
     pub fn node_label(&self, node: InFile<&ast::Label>) -> Option<LabelId> {
@@ -378,11 +378,11 @@ impl BodySourceMap {
     }
 
     pub fn field_syntax(&self, expr: ExprId) -> FieldSource {
-        self.field_map_back[&expr].clone()
+        self.field_map_back[&expr]
     }
 
     pub fn pat_field_syntax(&self, pat: PatId) -> PatFieldSource {
-        self.pat_field_map_back[&pat].clone()
+        self.pat_field_map_back[&pat]
     }
 
     pub fn macro_expansion_expr(&self, node: InFile<&ast::MacroExpr>) -> Option<ExprId> {
diff --git a/crates/hir-def/src/body/lower.rs b/crates/hir-def/src/body/lower.rs
index 4625ca7fc1..d9fadf557b 100644
--- a/crates/hir-def/src/body/lower.rs
+++ b/crates/hir-def/src/body/lower.rs
@@ -776,11 +776,10 @@ impl ExprCollector<'_> {
             None => self.collect_expr_opt(e.condition()),
         };
 
-        let break_expr =
-            self.alloc_expr(Expr::Break { expr: None, label: None }, syntax_ptr.clone());
+        let break_expr = self.alloc_expr(Expr::Break { expr: None, label: None }, syntax_ptr);
         let if_expr = self.alloc_expr(
             Expr::If { condition, then_branch: body, else_branch: Some(break_expr) },
-            syntax_ptr.clone(),
+            syntax_ptr,
         );
         self.alloc_expr(Expr::Loop { body: if_expr, label }, syntax_ptr)
     }
@@ -811,19 +810,19 @@ impl ExprCollector<'_> {
             return self.alloc_expr(Expr::Missing, syntax_ptr);
         };
         let head = self.collect_expr_opt(e.iterable());
-        let into_iter_fn_expr = self.alloc_expr(Expr::Path(into_iter_fn), syntax_ptr.clone());
+        let into_iter_fn_expr = self.alloc_expr(Expr::Path(into_iter_fn), syntax_ptr);
         let iterator = self.alloc_expr(
             Expr::Call {
                 callee: into_iter_fn_expr,
                 args: Box::new([head]),
                 is_assignee_expr: false,
             },
-            syntax_ptr.clone(),
+            syntax_ptr,
         );
         let none_arm = MatchArm {
             pat: self.alloc_pat_desugared(Pat::Path(Box::new(option_none))),
             guard: None,
-            expr: self.alloc_expr(Expr::Break { expr: None, label: None }, syntax_ptr.clone()),
+            expr: self.alloc_expr(Expr::Break { expr: None, label: None }, syntax_ptr),
         };
         let some_pat = Pat::TupleStruct {
             path: Some(Box::new(option_some)),
@@ -839,27 +838,25 @@ impl ExprCollector<'_> {
             }),
         };
         let iter_name = Name::generate_new_name();
-        let iter_expr =
-            self.alloc_expr(Expr::Path(Path::from(iter_name.clone())), syntax_ptr.clone());
+        let iter_expr = self.alloc_expr(Expr::Path(Path::from(iter_name.clone())), syntax_ptr);
         let iter_expr_mut = self.alloc_expr(
             Expr::Ref { expr: iter_expr, rawness: Rawness::Ref, mutability: Mutability::Mut },
-            syntax_ptr.clone(),
+            syntax_ptr,
         );
-        let iter_next_fn_expr = self.alloc_expr(Expr::Path(iter_next_fn), syntax_ptr.clone());
+        let iter_next_fn_expr = self.alloc_expr(Expr::Path(iter_next_fn), syntax_ptr);
         let iter_next_expr = self.alloc_expr(
             Expr::Call {
                 callee: iter_next_fn_expr,
                 args: Box::new([iter_expr_mut]),
                 is_assignee_expr: false,
             },
-            syntax_ptr.clone(),
+            syntax_ptr,
         );
         let loop_inner = self.alloc_expr(
             Expr::Match { expr: iter_next_expr, arms: Box::new([none_arm, some_arm]) },
-            syntax_ptr.clone(),
+            syntax_ptr,
         );
-        let loop_outer =
-            self.alloc_expr(Expr::Loop { body: loop_inner, label }, syntax_ptr.clone());
+        let loop_outer = self.alloc_expr(Expr::Loop { body: loop_inner, label }, syntax_ptr);
         let iter_binding = self.alloc_binding(iter_name, BindingAnnotation::Mutable);
         let iter_pat = self.alloc_pat_desugared(Pat::Bind { id: iter_binding, subpat: None });
         self.add_definition_to_binding(iter_binding, iter_pat);
@@ -868,7 +865,7 @@ impl ExprCollector<'_> {
                 expr: iterator,
                 arms: Box::new([MatchArm { pat: iter_pat, guard: None, expr: loop_outer }]),
             },
-            syntax_ptr.clone(),
+            syntax_ptr,
         )
     }
 
@@ -896,10 +893,10 @@ impl ExprCollector<'_> {
             return self.alloc_expr(Expr::Missing, syntax_ptr);
         };
         let operand = self.collect_expr_opt(e.expr());
-        let try_branch = self.alloc_expr(Expr::Path(try_branch), syntax_ptr.clone());
+        let try_branch = self.alloc_expr(Expr::Path(try_branch), syntax_ptr);
         let expr = self.alloc_expr(
             Expr::Call { callee: try_branch, args: Box::new([operand]), is_assignee_expr: false },
-            syntax_ptr.clone(),
+            syntax_ptr,
         );
         let continue_name = Name::generate_new_name();
         let continue_binding =
@@ -914,7 +911,7 @@ impl ExprCollector<'_> {
                 ellipsis: None,
             }),
             guard: None,
-            expr: self.alloc_expr(Expr::Path(Path::from(continue_name)), syntax_ptr.clone()),
+            expr: self.alloc_expr(Expr::Path(Path::from(continue_name)), syntax_ptr),
         };
         let break_name = Name::generate_new_name();
         let break_binding = self.alloc_binding(break_name.clone(), BindingAnnotation::Unannotated);
@@ -928,18 +925,18 @@ impl ExprCollector<'_> {
             }),
             guard: None,
             expr: {
-                let it = self.alloc_expr(Expr::Path(Path::from(break_name)), syntax_ptr.clone());
-                let callee = self.alloc_expr(Expr::Path(try_from_residual), syntax_ptr.clone());
+                let it = self.alloc_expr(Expr::Path(Path::from(break_name)), syntax_ptr);
+                let callee = self.alloc_expr(Expr::Path(try_from_residual), syntax_ptr);
                 let result = self.alloc_expr(
                     Expr::Call { callee, args: Box::new([it]), is_assignee_expr: false },
-                    syntax_ptr.clone(),
+                    syntax_ptr,
                 );
                 self.alloc_expr(
                     match self.current_try_block_label {
                         Some(label) => Expr::Break { expr: Some(result), label: Some(label) },
                         None => Expr::Return { expr: Some(result) },
                     },
-                    syntax_ptr.clone(),
+                    syntax_ptr,
                 )
             },
         };
@@ -1994,7 +1991,7 @@ impl ExprCollector<'_> {
     fn alloc_expr(&mut self, expr: Expr, ptr: ExprPtr) -> ExprId {
         let src = self.expander.in_file(ptr);
         let id = self.body.exprs.alloc(expr);
-        self.source_map.expr_map_back.insert(id, src.clone());
+        self.source_map.expr_map_back.insert(id, src);
         self.source_map.expr_map.insert(src, id);
         id
     }
@@ -2022,7 +2019,7 @@ impl ExprCollector<'_> {
     fn alloc_pat(&mut self, pat: Pat, ptr: PatPtr) -> PatId {
         let src = self.expander.in_file(ptr);
         let id = self.body.pats.alloc(pat);
-        self.source_map.pat_map_back.insert(id, src.clone());
+        self.source_map.pat_map_back.insert(id, src);
         self.source_map.pat_map.insert(src, id);
         id
     }
@@ -2037,7 +2034,7 @@ impl ExprCollector<'_> {
     fn alloc_label(&mut self, label: Label, ptr: LabelPtr) -> LabelId {
         let src = self.expander.in_file(ptr);
         let id = self.body.labels.alloc(label);
-        self.source_map.label_map_back.insert(id, src.clone());
+        self.source_map.label_map_back.insert(id, src);
         self.source_map.label_map.insert(src, id);
         id
     }
diff --git a/crates/hir/src/lib.rs b/crates/hir/src/lib.rs
index 501f262249..d48df7ca68 100644
--- a/crates/hir/src/lib.rs
+++ b/crates/hir/src/lib.rs
@@ -1594,12 +1594,11 @@ impl DefWithBody {
         for diag in source_map.diagnostics() {
             match diag {
                 BodyDiagnostic::InactiveCode { node, cfg, opts } => acc.push(
-                    InactiveCode { node: node.clone(), cfg: cfg.clone(), opts: opts.clone() }
-                        .into(),
+                    InactiveCode { node: *node, cfg: cfg.clone(), opts: opts.clone() }.into(),
                 ),
                 BodyDiagnostic::MacroError { node, message } => acc.push(
                     MacroError {
-                        node: node.clone().map(|it| it.into()),
+                        node: (*node).map(|it| it.into()),
                         precise_location: None,
                         message: message.to_string(),
                     }
@@ -1607,7 +1606,7 @@ impl DefWithBody {
                 ),
                 BodyDiagnostic::UnresolvedProcMacro { node, krate } => acc.push(
                     UnresolvedProcMacro {
-                        node: node.clone().map(|it| it.into()),
+                        node: (*node).map(|it| it.into()),
                         precise_location: None,
                         macro_name: None,
                         kind: MacroKind::ProcMacro,
@@ -1617,7 +1616,7 @@ impl DefWithBody {
                 ),
                 BodyDiagnostic::UnresolvedMacroCall { node, path } => acc.push(
                     UnresolvedMacroCall {
-                        macro_call: node.clone().map(|ast_ptr| ast_ptr.into()),
+                        macro_call: (*node).map(|ast_ptr| ast_ptr.into()),
                         precise_location: None,
                         path: path.clone(),
                         is_bang: true,
@@ -1625,10 +1624,10 @@ impl DefWithBody {
                     .into(),
                 ),
                 BodyDiagnostic::UnreachableLabel { node, name } => {
-                    acc.push(UnreachableLabel { node: node.clone(), name: name.clone() }.into())
+                    acc.push(UnreachableLabel { node: *node, name: name.clone() }.into())
                 }
                 BodyDiagnostic::UndeclaredLabel { node, name } => {
-                    acc.push(UndeclaredLabel { node: node.clone(), name: name.clone() }.into())
+                    acc.push(UndeclaredLabel { node: *node, name: name.clone() }.into())
                 }
             }
         }
@@ -1715,7 +1714,7 @@ impl DefWithBody {
                             field_with_same_name: field_with_same_name
                                 .clone()
                                 .map(|ty| Type::new(db, DefWithBodyId::from(self), ty)),
-                            assoc_func_with_same_name: assoc_func_with_same_name.clone(),
+                            assoc_func_with_same_name: *assoc_func_with_same_name,
                         }
                         .into(),
                     )
@@ -1931,8 +1930,7 @@ impl DefWithBody {
                         },
                         Either::Right(record_pat) => match source_map.pat_syntax(record_pat) {
                             Ok(source_ptr) => {
-                                if let Some(ptr) = source_ptr.value.clone().cast::<ast::RecordPat>()
-                                {
+                                if let Some(ptr) = source_ptr.value.cast::<ast::RecordPat>() {
                                     let root = source_ptr.file_syntax(db.upcast());
                                     let record_pat = ptr.to_node(&root);
                                     if record_pat.record_pat_field_list().is_some() {