don't clone copy types

compiler/rustc_codegen_ssa/src/lib.rs

@@ -116,7 +116,7 @@ pub struct NativeLib {
 
 impl From<&cstore::NativeLib> for NativeLib {
     fn from(lib: &cstore::NativeLib) -> Self {
-        NativeLib { kind: lib.kind.clone(), name: lib.name.clone(), cfg: lib.cfg.clone() }
+        NativeLib { kind: lib.kind, name: lib.name, cfg: lib.cfg.clone() }
     }
 }
 

src/librustdoc/clean/auto_trait.rs

@@ -597,7 +597,7 @@ impl<'a, 'tcx> AutoTraitFinder<'a, 'tcx> {
                                             ref mut bindings, ..
                                         } => {
                                             bindings.push(TypeBinding {
-                                                name: left_name.clone(),
+                                                name: left_name,
                                                 kind: TypeBindingKind::Equality { ty: rhs },
                                             });
                                         }
@@ -665,7 +665,7 @@ impl<'a, 'tcx> AutoTraitFinder<'a, 'tcx> {
                 GenericParamDefKind::Type { ref mut default, ref mut bounds, .. } => {
                     // We never want something like `impl<T=Foo>`.
                     default.take();
-                    let generic_ty = Type::Generic(param.name.clone());
+                    let generic_ty = Type::Generic(param.name);
                     if !has_sized.contains(&generic_ty) {
                         bounds.insert(0, GenericBound::maybe_sized(self.cx));
                     }

src/librustdoc/clean/mod.rs

@@ -831,7 +831,7 @@ impl<'a, 'tcx> Clean<Generics> for (&'a ty::Generics, ty::GenericPredicates<'tcx
         where_predicates.retain(|pred| match *pred {
             WP::BoundPredicate { ty: Generic(ref g), ref bounds } => {
                 if bounds.iter().any(|b| b.is_sized_bound(cx)) {
-                    sized_params.insert(g.clone());
+                    sized_params.insert(*g);
                     false
                 } else {
                     true
@@ -847,7 +847,7 @@ impl<'a, 'tcx> Clean<Generics> for (&'a ty::Generics, ty::GenericPredicates<'tcx
                 && !sized_params.contains(&tp.name)
             {
                 where_predicates.push(WP::BoundPredicate {
-                    ty: Type::Generic(tp.name.clone()),
+                    ty: Type::Generic(tp.name),
                     bounds: vec![GenericBound::maybe_sized(cx)],
                 })
             }

src/librustdoc/clean/utils.rs

@@ -74,7 +74,7 @@ crate fn krate(mut cx: &mut DocContext<'_>) -> Crate {
             )
         }));
         m.items.extend(keywords.into_iter().map(|(def_id, kw)| {
-            Item::from_def_id_and_parts(def_id, Some(kw.clone()), ItemKind::KeywordItem(kw), cx)
+            Item::from_def_id_and_parts(def_id, Some(kw), ItemKind::KeywordItem(kw), cx)
         }));
     }
 
@@ -307,7 +307,7 @@ crate fn strip_path(path: &Path) -> Path {
         .segments
         .iter()
         .map(|s| PathSegment {
-            name: s.name.clone(),
+            name: s.name,
             args: GenericArgs::AngleBracketed { args: vec![], bindings: vec![] },
         })
         .collect();

src/librustdoc/html/render/mod.rs

@@ -538,7 +538,7 @@ impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> {
     fn after_krate(&mut self, krate: &clean::Crate, cache: &Cache) -> Result<(), Error> {
         let final_file = self.dst.join(&*krate.name.as_str()).join("all.html");
         let settings_file = self.dst.join("settings.html");
-        let crate_name = krate.name.clone();
+        let crate_name = krate.name;
 
         let mut root_path = self.dst.to_str().expect("invalid path").to_owned();
         if !root_path.ends_with('/') {
@@ -3967,7 +3967,7 @@ fn render_impl(
         cache: &Cache,
     ) {
         for trait_item in &t.items {
-            let n = trait_item.name.clone();
+            let n = trait_item.name;
             if i.items.iter().any(|m| m.name == n) {
                 continue;
             }

src/librustdoc/passes/collect_intra_doc_links.rs

@@ -1234,7 +1234,7 @@ impl LinkCollector<'_, '_> {
     ) -> Option<(Res, Option<String>)> {
         // Try to look up both the result and the corresponding side channel value
         if let Some(ref cached) = self.visited_links.get(&key) {
-            self.kind_side_channel.set(cached.side_channel.clone());
+            self.kind_side_channel.set(cached.side_channel);
             return Some(cached.res.clone());
         }