diff --git a/clippy_lints/src/lifetimes.rs b/clippy_lints/src/lifetimes.rs
index 47cced9d9..07fbc78f3 100644
--- a/clippy_lints/src/lifetimes.rs
+++ b/clippy_lints/src/lifetimes.rs
@@ -348,7 +348,7 @@ impl<'a, 'tcx> Visitor<'tcx> for RefVisitor<'a, 'tcx> {
             },
             TyKind::Def(item, _) => {
                 let map = self.cx.tcx.hir();
-                if let ItemKind::Existential(ref exist_ty) = map.expect_item(item.id).node {
+                if let ItemKind::OpaqueTy(ref exist_ty) = map.expect_item(item.id).node {
                     for bound in &exist_ty.bounds {
                         if let GenericBound::Outlives(_) = *bound {
                             self.record(&None);
diff --git a/clippy_lints/src/missing_doc.rs b/clippy_lints/src/missing_doc.rs
index 195e78795..00f1cf9a5 100644
--- a/clippy_lints/src/missing_doc.rs
+++ b/clippy_lints/src/missing_doc.rs
@@ -148,7 +148,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for MissingDoc {
             hir::ItemKind::TraitAlias(..) => "a trait alias",
             hir::ItemKind::Ty(..) => "a type alias",
             hir::ItemKind::Union(..) => "a union",
-            hir::ItemKind::Existential(..) => "an existential type",
+            hir::ItemKind::OpaqueTy(..) => "an existential type",
             hir::ItemKind::ExternCrate(..)
             | hir::ItemKind::ForeignMod(..)
             | hir::ItemKind::GlobalAsm(..)
@@ -185,7 +185,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for MissingDoc {
             hir::ImplItemKind::Const(..) => "an associated constant",
             hir::ImplItemKind::Method(..) => "a method",
             hir::ImplItemKind::Type(_) => "an associated type",
-            hir::ImplItemKind::Existential(_) => "an existential type",
+            hir::ImplItemKind::OpaqueTy(_) => "an existential type",
         };
         self.check_missing_docs_attrs(cx, &impl_item.attrs, impl_item.span, desc);
     }
diff --git a/clippy_lints/src/missing_inline.rs b/clippy_lints/src/missing_inline.rs
index 3efbfbb70..c467f2fc3 100644
--- a/clippy_lints/src/missing_inline.rs
+++ b/clippy_lints/src/missing_inline.rs
@@ -121,7 +121,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for MissingInline {
             | hir::ItemKind::GlobalAsm(..)
             | hir::ItemKind::Ty(..)
             | hir::ItemKind::Union(..)
-            | hir::ItemKind::Existential(..)
+            | hir::ItemKind::OpaqueTy(..)
             | hir::ItemKind::ExternCrate(..)
             | hir::ItemKind::ForeignMod(..)
             | hir::ItemKind::Impl(..)
@@ -142,7 +142,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for MissingInline {
 
         let desc = match impl_item.node {
             hir::ImplItemKind::Method(..) => "a method",
-            hir::ImplItemKind::Const(..) | hir::ImplItemKind::Type(_) | hir::ImplItemKind::Existential(_) => return,
+            hir::ImplItemKind::Const(..) | hir::ImplItemKind::Type(_) | hir::ImplItemKind::OpaqueTy(_) => return,
         };
 
         let def_id = cx.tcx.hir().local_def_id(impl_item.hir_id);
diff --git a/clippy_lints/src/utils/inspector.rs b/clippy_lints/src/utils/inspector.rs
index ea169481a..7f7466a1a 100644
--- a/clippy_lints/src/utils/inspector.rs
+++ b/clippy_lints/src/utils/inspector.rs
@@ -64,7 +64,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for DeepCodeInspector {
             },
             hir::ImplItemKind::Method(..) => println!("method"),
             hir::ImplItemKind::Type(_) => println!("associated type"),
-            hir::ImplItemKind::Existential(_) => println!("existential type"),
+            hir::ImplItemKind::OpaqueTy(_) => println!("existential type"),
         }
     }
     // fn check_trait_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx
@@ -363,7 +363,7 @@ fn print_item(cx: &LateContext<'_, '_>, item: &hir::Item) {
         hir::ItemKind::Ty(..) => {
             println!("type alias for {:?}", cx.tcx.type_of(did));
         },
-        hir::ItemKind::Existential(..) => {
+        hir::ItemKind::OpaqueTy(..) => {
             println!("existential type with real type {:?}", cx.tcx.type_of(did));
         },
         hir::ItemKind::Enum(..) => {
diff --git a/clippy_lints/src/write.rs b/clippy_lints/src/write.rs
index 869e532ee..9b30708b2 100644
--- a/clippy_lints/src/write.rs
+++ b/clippy_lints/src/write.rs
@@ -364,7 +364,9 @@ fn check_tts<'a>(cx: &EarlyContext<'a>, tts: &TokenStream, is_write: bool) -> (O
             align: AlignUnknown,
             flags: 0,
             precision: CountImplied,
+            precision_span: None,
             width: CountImplied,
+            width_span: None,
             ty: "",
         };
         if !parser.eat(&token::Comma) {