diff --git a/clippy_lints/src/doc.rs b/clippy_lints/src/doc.rs
index e015b1b49c6..12c9ba8dcd2 100644
--- a/clippy_lints/src/doc.rs
+++ b/clippy_lints/src/doc.rs
@@ -229,7 +229,7 @@ fn lint_for_missing_headers<'a, 'tcx>(
                 if let Some(body_id) = body_id;
                 if let Some(future) = cx.tcx.lang_items().future_trait();
                 let def_id = cx.tcx.hir().body_owner_def_id(body_id);
-                let mir = cx.tcx.optimized_mir(def_id);
+                let mir = cx.tcx.optimized_mir(def_id.to_def_id());
                 let ret_ty = mir.return_ty();
                 if implements_trait(cx, ret_ty, future, &[]);
                 if let ty::Opaque(_, subs) = ret_ty.kind;
diff --git a/clippy_lints/src/enum_clike.rs b/clippy_lints/src/enum_clike.rs
index ace11073a8f..a1fed3fb6e2 100644
--- a/clippy_lints/src/enum_clike.rs
+++ b/clippy_lints/src/enum_clike.rs
@@ -46,10 +46,10 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for UnportableVariant {
             for var in def.variants {
                 if let Some(anon_const) = &var.disr_expr {
                     let def_id = cx.tcx.hir().body_owner_def_id(anon_const.body);
-                    let mut ty = cx.tcx.type_of(def_id);
+                    let mut ty = cx.tcx.type_of(def_id.to_def_id());
                     let constant = cx
                         .tcx
-                        .const_eval_poly(def_id)
+                        .const_eval_poly(def_id.to_def_id())
                         .ok()
                         .map(|val| rustc_middle::ty::Const::from_value(cx.tcx, val, ty));
                     if let Some(Constant::Int(val)) = constant.and_then(miri_to_const) {
diff --git a/clippy_lints/src/implicit_return.rs b/clippy_lints/src/implicit_return.rs
index d968a928c33..8b87f4c896a 100644
--- a/clippy_lints/src/implicit_return.rs
+++ b/clippy_lints/src/implicit_return.rs
@@ -135,11 +135,11 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for ImplicitReturn {
         let def_id = cx.tcx.hir().body_owner_def_id(body.id());
 
         // Building MIR for `fn`s with unsatisfiable preds results in ICE.
-        if fn_has_unsatisfiable_preds(cx, def_id) {
+        if fn_has_unsatisfiable_preds(cx, def_id.to_def_id()) {
             return;
         }
 
-        let mir = cx.tcx.optimized_mir(def_id);
+        let mir = cx.tcx.optimized_mir(def_id.to_def_id());
 
         // checking return type through MIR, HIR is not able to determine inferred closure return types
         // make sure it's not a macro
diff --git a/clippy_lints/src/redundant_clone.rs b/clippy_lints/src/redundant_clone.rs
index dc1ff86c0bd..c315b575ef5 100644
--- a/clippy_lints/src/redundant_clone.rs
+++ b/clippy_lints/src/redundant_clone.rs
@@ -80,15 +80,15 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for RedundantClone {
         let def_id = cx.tcx.hir().body_owner_def_id(body.id());
 
         // Building MIR for `fn`s with unsatisfiable preds results in ICE.
-        if fn_has_unsatisfiable_preds(cx, def_id) {
+        if fn_has_unsatisfiable_preds(cx, def_id.to_def_id()) {
             return;
         }
 
-        let mir = cx.tcx.optimized_mir(def_id);
+        let mir = cx.tcx.optimized_mir(def_id.to_def_id());
         let mir_read_only = mir.unwrap_read_only();
 
         let maybe_storage_live_result = MaybeStorageLive
-            .into_engine(cx.tcx, mir, def_id)
+            .into_engine(cx.tcx, mir, def_id.to_def_id())
             .iterate_to_fixpoint()
             .into_results_cursor(mir);
         let mut possible_borrower = {