Auto merge of #100273 - Mark-Simulacrum:stable-next, r=Mark-Simulacrum 1.63.0

[stable] 1.63.0 release

Includes cherry picks of:

* https://github.com/rust-lang/rust/pull/100207
* https://github.com/rust-lang/rust-clippy/pull/9302
*  Avoid ICE in rustdoc when using Fn bounds #100205

r? `@Mark-Simulacrum`

1 files changed, 18 insertions, 10 deletions

diff --git a/src/librustdoc/clean/auto_trait.rs b/src/librustdoc/clean/auto_trait.rs
index fb178cbd95e..5e9f3346af9 100644
--- a/src/librustdoc/clean/auto_trait.rs
+++ b/src/librustdoc/clean/auto_trait.rs
@@ -345,15 +345,13 @@ impl<'a, 'tcx> AutoTraitFinder<'a, 'tcx> {
     fn make_final_bounds(
         &self,
         ty_to_bounds: FxHashMap<Type, FxHashSet<GenericBound>>,
-        ty_to_fn: FxHashMap<Type, (Option<PolyTrait>, Option<Type>)>,
+        ty_to_fn: FxHashMap<Type, (PolyTrait, Option<Type>)>,
         lifetime_to_bounds: FxHashMap<Lifetime, FxHashSet<GenericBound>>,
     ) -> Vec<WherePredicate> {
         ty_to_bounds
             .into_iter()
             .flat_map(|(ty, mut bounds)| {
-                if let Some(data) = ty_to_fn.get(&ty) {
-                    let (poly_trait, output) =
-                        (data.0.as_ref().unwrap().clone(), data.1.as_ref().cloned().map(Box::new));
+                if let Some((ref poly_trait, ref output)) = ty_to_fn.get(&ty) {
                     let mut new_path = poly_trait.trait_.clone();
                     let last_segment = new_path.segments.pop().expect("segments were empty");
 
@@ -371,8 +369,9 @@ impl<'a, 'tcx> AutoTraitFinder<'a, 'tcx> {
                         GenericArgs::Parenthesized { inputs, output } => (inputs, output),
                     };
 
+                    let output = output.as_ref().cloned().map(Box::new);
                     if old_output.is_some() && old_output != output {
-                        panic!("Output mismatch for {:?} {:?} {:?}", ty, old_output, data.1);
+                        panic!("Output mismatch for {:?} {:?} {:?}", ty, old_output, output);
                     }
 
                     let new_params = GenericArgs::Parenthesized { inputs: old_input, output };
@@ -382,7 +381,10 @@ impl<'a, 'tcx> AutoTraitFinder<'a, 'tcx> {
                         .push(PathSegment { name: last_segment.name, args: new_params });
 
                     bounds.insert(GenericBound::TraitBound(
-                        PolyTrait { trait_: new_path, generic_params: poly_trait.generic_params },
+                        PolyTrait {
+                            trait_: new_path,
+                            generic_params: poly_trait.generic_params.clone(),
+                        },
                         hir::TraitBoundModifier::None,
                     ));
                 }
@@ -468,7 +470,7 @@ impl<'a, 'tcx> AutoTraitFinder<'a, 'tcx> {
         let mut lifetime_to_bounds: FxHashMap<_, FxHashSet<_>> = Default::default();
         let mut ty_to_traits: FxHashMap<Type, FxHashSet<Path>> = Default::default();
 
-        let mut ty_to_fn: FxHashMap<Type, (Option<PolyTrait>, Option<Type>)> = Default::default();
+        let mut ty_to_fn: FxHashMap<Type, (PolyTrait, Option<Type>)> = Default::default();
 
         for p in clean_where_predicates {
             let (orig_p, p) = (p, p.clean(self.cx));
@@ -532,8 +534,8 @@ impl<'a, 'tcx> AutoTraitFinder<'a, 'tcx> {
                         if is_fn {
                             ty_to_fn
                                 .entry(ty.clone())
-                                .and_modify(|e| *e = (Some(poly_trait.clone()), e.1.clone()))
-                                .or_insert(((Some(poly_trait.clone())), None));
+                                .and_modify(|e| *e = (poly_trait.clone(), e.1.clone()))
+                                .or_insert(((poly_trait.clone()), None));
 
                             ty_to_bounds.entry(ty.clone()).or_default();
                         } else {
@@ -556,7 +558,13 @@ impl<'a, 'tcx> AutoTraitFinder<'a, 'tcx> {
                                     .and_modify(|e| {
                                         *e = (e.0.clone(), Some(rhs.ty().unwrap().clone()))
                                     })
-                                    .or_insert((None, Some(rhs.ty().unwrap().clone())));
+                                    .or_insert((
+                                        PolyTrait {
+                                            trait_: trait_.clone(),
+                                            generic_params: Vec::new(),
+                                        },
+                                        Some(rhs.ty().unwrap().clone()),
+                                    ));
                                 continue;
                             }