Auto merge of #80510 - JohnTitor:rollup-gow7y0l, r=JohnTitor

Rollup of 7 pull requests

Successful merges:

 - #80185 (Fix ICE when pointing at multi bytes character)
 - #80260 (slightly more typed interface to panic implementation)
 - #80311 (Improvements to NatVis support)
 - #80337 (Use `desc` as a doc-comment for queries if there are no doc comments)
 - #80381 (Revert "Cleanup markdown span handling")
 - #80492 (remove empty wraps, don't return Results from from infallible functions)
 - #80509 (where possible, pass slices instead of &Vec or &String (clippy::ptr_arg))

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

compiler/rustc_mir/src/borrow_check/diagnostics/mod.rs

@@ -954,7 +954,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
         &self,
         def_id: DefId,
         target_place: PlaceRef<'tcx>,
-        places: &Vec<Operand<'tcx>>,
+        places: &[Operand<'tcx>],
     ) -> Option<(Span, Option<GeneratorKind>, Span)> {
         debug!(
             "closure_span: def_id={:?} target_place={:?} places={:?}",

compiler/rustc_mir/src/borrow_check/type_check/liveness/local_use_map.rs

@@ -58,11 +58,7 @@ impl vll::LinkElem for Appearance {
 }
 
 impl LocalUseMap {
-    crate fn build(
-        live_locals: &Vec<Local>,
-        elements: &RegionValueElements,
-        body: &Body<'_>,
-    ) -> Self {
+    crate fn build(live_locals: &[Local], elements: &RegionValueElements, body: &Body<'_>) -> Self {
         let nones = IndexVec::from_elem_n(None, body.local_decls.len());
         let mut local_use_map = LocalUseMap {
             first_def_at: nones.clone(),

compiler/rustc_mir/src/interpret/validity.rs

@@ -153,7 +153,7 @@ impl<T: Copy + Eq + Hash + std::fmt::Debug, PATH: Default> RefTracking<T, PATH>
 }
 
 /// Format a path
-fn write_path(out: &mut String, path: &Vec<PathElem>) {
+fn write_path(out: &mut String, path: &[PathElem]) {
     use self::PathElem::*;
 
     for elem in path.iter() {

compiler/rustc_mir/src/transform/coverage/counters.rs

@@ -140,7 +140,7 @@ impl<'a> BcbCounters<'a> {
     /// message for subsequent debugging.
     fn make_bcb_counters(
         &mut self,
-        coverage_spans: &Vec<CoverageSpan>,
+        coverage_spans: &[CoverageSpan],
     ) -> Result<Vec<CoverageKind>, Error> {
         debug!("make_bcb_counters(): adding a counter or expression to each BasicCoverageBlock");
         let num_bcbs = self.basic_coverage_blocks.num_nodes();
@@ -465,7 +465,7 @@ impl<'a> BcbCounters<'a> {
     fn choose_preferred_expression_branch(
         &self,
         traversal: &TraverseCoverageGraphWithLoops,
-        branches: &Vec<BcbBranch>,
+        branches: &[BcbBranch],
     ) -> BcbBranch {
         let branch_needs_a_counter =
             |branch: &BcbBranch| branch.counter(&self.basic_coverage_blocks).is_none();
@@ -509,7 +509,7 @@ impl<'a> BcbCounters<'a> {
     fn find_some_reloop_branch(
         &self,
         traversal: &TraverseCoverageGraphWithLoops,
-        branches: &Vec<BcbBranch>,
+        branches: &[BcbBranch],
     ) -> Option<BcbBranch> {
         let branch_needs_a_counter =
             |branch: &BcbBranch| branch.counter(&self.basic_coverage_blocks).is_none();

compiler/rustc_mir/src/transform/function_item_references.rs

@@ -99,7 +99,7 @@ impl<'a, 'tcx> FunctionItemRefChecker<'a, 'tcx> {
         &self,
         def_id: DefId,
         substs_ref: SubstsRef<'tcx>,
-        args: &Vec<Operand<'tcx>>,
+        args: &[Operand<'tcx>],
         source_info: SourceInfo,
     ) {
         let param_env = self.tcx.param_env(def_id);
@@ -162,7 +162,7 @@ impl<'a, 'tcx> FunctionItemRefChecker<'a, 'tcx> {
             .unwrap_or(None)
     }
 
-    fn nth_arg_span(&self, args: &Vec<Operand<'tcx>>, n: usize) -> Span {
+    fn nth_arg_span(&self, args: &[Operand<'tcx>], n: usize) -> Span {
         match &args[n] {
             Operand::Copy(place) | Operand::Move(place) => {
                 self.body.local_decls[place.local].source_info.span