diff --git a/compiler/rustc_const_eval/src/interpret/eval_context.rs b/compiler/rustc_const_eval/src/interpret/eval_context.rs
index d46950ed90315..a7c08f225b004 100644
--- a/compiler/rustc_const_eval/src/interpret/eval_context.rs
+++ b/compiler/rustc_const_eval/src/interpret/eval_context.rs
@@ -15,7 +15,7 @@ use rustc_middle::ty::{
 use rustc_mir_dataflow::storage::AlwaysLiveLocals;
 use rustc_query_system::ich::StableHashingContext;
 use rustc_session::Limit;
-use rustc_span::{Pos, Span, DUMMY_SP};
+use rustc_span::{Pos, Span};
 use rustc_target::abi::{Align, HasDataLayout, Size, TargetDataLayout};
 
 use super::{
@@ -525,7 +525,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
             .try_subst_mir_and_normalize_erasing_regions(*self.tcx, self.param_env, value)
             .or_else(|e| {
                 self.tcx.sess.delay_span_bug(
-                    DUMMY_SP,
+                    self.cur_span(),
                     format!("failed to normalize {}", e.get_type_for_failure()).as_str(),
                 );
 
diff --git a/compiler/rustc_const_eval/src/interpret/intrinsics.rs b/compiler/rustc_const_eval/src/interpret/intrinsics.rs
index 18dde3bc34ef1..d6f856a6f0a70 100644
--- a/compiler/rustc_const_eval/src/interpret/intrinsics.rs
+++ b/compiler/rustc_const_eval/src/interpret/intrinsics.rs
@@ -140,7 +140,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
 
             sym::min_align_of_val | sym::size_of_val => {
                 // Avoid `deref_operand` -- this is not a deref, the ptr does not have to be
-                // dereferencable!
+                // dereferenceable!
                 let place = self.ref_to_mplace(&self.read_immediate(&args[0])?)?;
                 let (size, align) = self
                     .size_and_align_of_mplace(&place)?
diff --git a/compiler/rustc_const_eval/src/interpret/place.rs b/compiler/rustc_const_eval/src/interpret/place.rs
index 4c95da896a223..e526bfa2b52c7 100644
--- a/compiler/rustc_const_eval/src/interpret/place.rs
+++ b/compiler/rustc_const_eval/src/interpret/place.rs
@@ -327,7 +327,7 @@ where
         self.memory.get_mut(place.ptr, size, place.align)
     }
 
-    /// Check if this mplace is dereferencable and sufficiently aligned.
+    /// Check if this mplace is dereferenceable and sufficiently aligned.
     fn check_mplace_access(
         &self,
         mplace: MPlaceTy<'tcx, M::PointerTag>,
diff --git a/library/alloc/src/collections/btree/map/tests.rs b/library/alloc/src/collections/btree/map/tests.rs
index 17389657afb92..c95aeeaa60558 100644
--- a/library/alloc/src/collections/btree/map/tests.rs
+++ b/library/alloc/src/collections/btree/map/tests.rs
@@ -1556,7 +1556,7 @@ fn test_clone_from() {
 }
 
 #[allow(dead_code)]
-fn test_variance() {
+fn assert_covariance() {
     fn map_key<'new>(v: BTreeMap<&'static str, ()>) -> BTreeMap<&'new str, ()> {
         v
     }
@@ -1615,7 +1615,7 @@ fn test_variance() {
 }
 
 #[allow(dead_code)]
-fn test_sync() {
+fn assert_sync() {
     fn map<T: Sync>(v: &BTreeMap<T, T>) -> impl Sync + '_ {
         v
     }
@@ -1684,7 +1684,7 @@ fn test_sync() {
 }
 
 #[allow(dead_code)]
-fn test_send() {
+fn assert_send() {
     fn map<T: Send>(v: BTreeMap<T, T>) -> impl Send {
         v
     }
diff --git a/library/alloc/src/collections/btree/set/tests.rs b/library/alloc/src/collections/btree/set/tests.rs
index 2fc17a7c8603f..7390ff5a59c8c 100644
--- a/library/alloc/src/collections/btree/set/tests.rs
+++ b/library/alloc/src/collections/btree/set/tests.rs
@@ -3,6 +3,7 @@ use super::super::testing::rng::DeterministicRng;
 use super::*;
 use crate::vec::Vec;
 use std::cmp::Ordering;
+use std::hash::{Hash, Hasher};
 use std::iter::FromIterator;
 use std::panic::{catch_unwind, AssertUnwindSafe};
 
@@ -513,7 +514,7 @@ fn test_recovery() {
 }
 
 #[allow(dead_code)]
-fn test_variance() {
+fn assert_covariance() {
     fn set<'new>(v: BTreeSet<&'static str>) -> BTreeSet<&'new str> {
         v
     }
@@ -530,7 +531,7 @@ fn test_variance() {
 }
 
 #[allow(dead_code)]
-fn test_sync() {
+fn assert_sync() {
     fn set<T: Sync>(v: &BTreeSet<T>) -> impl Sync + '_ {
         v
     }
@@ -569,7 +570,7 @@ fn test_sync() {
 }
 
 #[allow(dead_code)]
-fn test_send() {
+fn assert_send() {
     fn set<T: Send>(v: BTreeSet<T>) -> impl Send {
         v
     }
@@ -607,6 +608,37 @@ fn test_send() {
     }
 }
 
+#[allow(dead_code)]
+// Check that the member-like functions conditionally provided by #[derive()]
+// are not overriden by genuine member functions with a different signature.
+fn assert_derives() {
+    fn hash<T: Hash, H: Hasher>(v: BTreeSet<T>, state: &mut H) {
+        v.hash(state);
+        // Tested much more thoroughly outside the crate in btree_set_hash.rs
+    }
+    fn eq<T: PartialEq>(v: BTreeSet<T>) {
+        let _ = v.eq(&v);
+    }
+    fn ne<T: PartialEq>(v: BTreeSet<T>) {
+        let _ = v.ne(&v);
+    }
+    fn cmp<T: Ord>(v: BTreeSet<T>) {
+        let _ = v.cmp(&v);
+    }
+    fn min<T: Ord>(v: BTreeSet<T>, w: BTreeSet<T>) {
+        let _ = v.min(w);
+    }
+    fn max<T: Ord>(v: BTreeSet<T>, w: BTreeSet<T>) {
+        let _ = v.max(w);
+    }
+    fn clamp<T: Ord>(v: BTreeSet<T>, w: BTreeSet<T>, x: BTreeSet<T>) {
+        let _ = v.clamp(w, x);
+    }
+    fn partial_cmp<T: PartialOrd>(v: &BTreeSet<T>) {
+        let _ = v.partial_cmp(&v);
+    }
+}
+
 #[test]
 fn test_ord_absence() {
     fn set<K>(mut set: BTreeSet<K>) {
diff --git a/library/alloc/src/collections/vec_deque/iter_mut.rs b/library/alloc/src/collections/vec_deque/iter_mut.rs
index 31e6e3b06af5f..ee2df0d516012 100644
--- a/library/alloc/src/collections/vec_deque/iter_mut.rs
+++ b/library/alloc/src/collections/vec_deque/iter_mut.rs
@@ -12,7 +12,7 @@ use super::{count, wrap_index, RingSlices};
 /// [`iter_mut`]: super::VecDeque::iter_mut
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct IterMut<'a, T: 'a> {
-    // Internal safety invariant: the entire slice is dereferencable.
+    // Internal safety invariant: the entire slice is dereferenceable.
     ring: *mut [T],
     tail: usize,
     head: usize,
@@ -42,7 +42,7 @@ impl<T: fmt::Debug> fmt::Debug for IterMut<'_, T> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let (front, back) = RingSlices::ring_slices(self.ring, self.head, self.tail);
         // SAFETY: these are the elements we have not handed out yet, so aliasing is fine.
-        // The `IterMut` invariant also ensures everything is dereferencable.
+        // The `IterMut` invariant also ensures everything is dereferenceable.
         let (front, back) = unsafe { (&*front, &*back) };
         f.debug_tuple("IterMut").field(&front).field(&back).finish()
     }
@@ -78,7 +78,7 @@ impl<'a, T> Iterator for IterMut<'a, T> {
     {
         let (front, back) = RingSlices::ring_slices(self.ring, self.head, self.tail);
         // SAFETY: these are the elements we have not handed out yet, so aliasing is fine.
-        // The `IterMut` invariant also ensures everything is dereferencable.
+        // The `IterMut` invariant also ensures everything is dereferenceable.
         let (front, back) = unsafe { (&mut *front, &mut *back) };
         accum = front.iter_mut().fold(accum, &mut f);
         back.iter_mut().fold(accum, &mut f)
@@ -132,7 +132,7 @@ impl<'a, T> DoubleEndedIterator for IterMut<'a, T> {
     {
         let (front, back) = RingSlices::ring_slices(self.ring, self.head, self.tail);
         // SAFETY: these are the elements we have not handed out yet, so aliasing is fine.
-        // The `IterMut` invariant also ensures everything is dereferencable.
+        // The `IterMut` invariant also ensures everything is dereferenceable.
         let (front, back) = unsafe { (&mut *front, &mut *back) };
         accum = back.iter_mut().rfold(accum, &mut f);
         front.iter_mut().rfold(accum, &mut f)
diff --git a/library/alloc/src/collections/vec_deque/mod.rs b/library/alloc/src/collections/vec_deque/mod.rs
index 702d97858eb45..075becfb7d11a 100644
--- a/library/alloc/src/collections/vec_deque/mod.rs
+++ b/library/alloc/src/collections/vec_deque/mod.rs
@@ -1020,7 +1020,7 @@ impl<T, A: Allocator> VecDeque<T, A> {
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
         // SAFETY: The internal `IterMut` safety invariant is established because the
-        // `ring` we create is a dereferencable slice for lifetime '_.
+        // `ring` we create is a dereferenceable slice for lifetime '_.
         let ring = ptr::slice_from_raw_parts_mut(self.ptr(), self.cap());
 
         unsafe { IterMut::new(ring, self.tail, self.head, PhantomData) }
@@ -1209,7 +1209,7 @@ impl<T, A: Allocator> VecDeque<T, A> {
         let (tail, head) = self.range_tail_head(range);
 
         // SAFETY: The internal `IterMut` safety invariant is established because the
-        // `ring` we create is a dereferencable slice for lifetime '_.
+        // `ring` we create is a dereferenceable slice for lifetime '_.
         let ring = ptr::slice_from_raw_parts_mut(self.ptr(), self.cap());
 
         unsafe { IterMut::new(ring, tail, head, PhantomData) }
diff --git a/library/alloc/src/rc.rs b/library/alloc/src/rc.rs
index c4e5e44fec0b2..33bee4324fd38 100644
--- a/library/alloc/src/rc.rs
+++ b/library/alloc/src/rc.rs
@@ -2121,7 +2121,7 @@ impl<T: ?Sized> Weak<T> {
             // a valid payload address, as the payload is at least as aligned as RcBox (usize).
             ptr as *const T
         } else {
-            // SAFETY: if is_dangling returns false, then the pointer is dereferencable.
+            // SAFETY: if is_dangling returns false, then the pointer is dereferenceable.
             // The payload may be dropped at this point, and we have to maintain provenance,
             // so use raw pointer manipulation.
             unsafe { ptr::addr_of_mut!((*ptr).value) }
diff --git a/library/alloc/src/sync.rs b/library/alloc/src/sync.rs
index 733a898b285ac..7c065f37d1fa8 100644
--- a/library/alloc/src/sync.rs
+++ b/library/alloc/src/sync.rs
@@ -1743,7 +1743,7 @@ impl<T: ?Sized> Weak<T> {
             // a valid payload address, as the payload is at least as aligned as ArcInner (usize).
             ptr as *const T
         } else {
-            // SAFETY: if is_dangling returns false, then the pointer is dereferencable.
+            // SAFETY: if is_dangling returns false, then the pointer is dereferenceable.
             // The payload may be dropped at this point, and we have to maintain provenance,
             // so use raw pointer manipulation.
             unsafe { ptr::addr_of_mut!((*ptr).data) }
diff --git a/library/core/src/ptr/const_ptr.rs b/library/core/src/ptr/const_ptr.rs
index 3c716672113e5..332be06dd1617 100644
--- a/library/core/src/ptr/const_ptr.rs
+++ b/library/core/src/ptr/const_ptr.rs
@@ -119,7 +119,7 @@ impl<T: ?Sized> *const T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * The pointer must point to an initialized instance of `T`.
     ///
@@ -183,7 +183,7 @@ impl<T: ?Sized> *const T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * You must enforce Rust's aliasing rules, since the returned lifetime `'a` is
     ///   arbitrarily chosen and does not necessarily reflect the actual lifetime of the data.
@@ -1003,7 +1003,7 @@ impl<T> *const [T] {
     /// Returns a raw pointer to an element or subslice, without doing bounds
     /// checking.
     ///
-    /// Calling this method with an out-of-bounds index or when `self` is not dereferencable
+    /// Calling this method with an out-of-bounds index or when `self` is not dereferenceable
     /// is *[undefined behavior]* even if the resulting pointer is not used.
     ///
     /// [undefined behavior]: https://doc.rust-lang.org/reference/behavior-considered-undefined.html
@@ -1025,7 +1025,7 @@ impl<T> *const [T] {
     where
         I: SliceIndex<[T]>,
     {
-        // SAFETY: the caller ensures that `self` is dereferencable and `index` in-bounds.
+        // SAFETY: the caller ensures that `self` is dereferenceable and `index` in-bounds.
         unsafe { index.get_unchecked(self) }
     }
 
diff --git a/library/core/src/ptr/mut_ptr.rs b/library/core/src/ptr/mut_ptr.rs
index 5d4e37641ee84..15ef64bc73f82 100644
--- a/library/core/src/ptr/mut_ptr.rs
+++ b/library/core/src/ptr/mut_ptr.rs
@@ -122,7 +122,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * The pointer must point to an initialized instance of `T`.
     ///
@@ -189,7 +189,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * You must enforce Rust's aliasing rules, since the returned lifetime `'a` is
     ///   arbitrarily chosen and does not necessarily reflect the actual lifetime of the data.
@@ -368,7 +368,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * The pointer must point to an initialized instance of `T`.
     ///
@@ -434,7 +434,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * You must enforce Rust's aliasing rules, since the returned lifetime `'a` is
     ///   arbitrarily chosen and does not necessarily reflect the actual lifetime of the data.
@@ -1266,7 +1266,7 @@ impl<T> *mut [T] {
     /// Returns a raw pointer to an element or subslice, without doing bounds
     /// checking.
     ///
-    /// Calling this method with an out-of-bounds index or when `self` is not dereferencable
+    /// Calling this method with an out-of-bounds index or when `self` is not dereferenceable
     /// is *[undefined behavior]* even if the resulting pointer is not used.
     ///
     /// [undefined behavior]: https://doc.rust-lang.org/reference/behavior-considered-undefined.html
@@ -1288,7 +1288,7 @@ impl<T> *mut [T] {
     where
         I: SliceIndex<[T]>,
     {
-        // SAFETY: the caller ensures that `self` is dereferencable and `index` in-bounds.
+        // SAFETY: the caller ensures that `self` is dereferenceable and `index` in-bounds.
         unsafe { index.get_unchecked_mut(self) }
     }
 
diff --git a/library/core/src/ptr/non_null.rs b/library/core/src/ptr/non_null.rs
index 58110b0680943..4f4e7eca28180 100644
--- a/library/core/src/ptr/non_null.rs
+++ b/library/core/src/ptr/non_null.rs
@@ -109,7 +109,7 @@ impl<T: Sized> NonNull<T> {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * You must enforce Rust's aliasing rules, since the returned lifetime `'a` is
     ///   arbitrarily chosen and does not necessarily reflect the actual lifetime of the data.
@@ -142,7 +142,7 @@ impl<T: Sized> NonNull<T> {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * You must enforce Rust's aliasing rules, since the returned lifetime `'a` is
     ///   arbitrarily chosen and does not necessarily reflect the actual lifetime of the data.
@@ -289,7 +289,7 @@ impl<T: ?Sized> NonNull<T> {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * The pointer must point to an initialized instance of `T`.
     ///
@@ -338,7 +338,7 @@ impl<T: ?Sized> NonNull<T> {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * The pointer must point to an initialized instance of `T`.
     ///
@@ -604,7 +604,7 @@ impl<T> NonNull<[T]> {
     /// Returns a raw pointer to an element or subslice, without doing bounds
     /// checking.
     ///
-    /// Calling this method with an out-of-bounds index or when `self` is not dereferencable
+    /// Calling this method with an out-of-bounds index or when `self` is not dereferenceable
     /// is *[undefined behavior]* even if the resulting pointer is not used.
     ///
     /// [undefined behavior]: https://doc.rust-lang.org/reference/behavior-considered-undefined.html
@@ -628,7 +628,7 @@ impl<T> NonNull<[T]> {
     where
         I: SliceIndex<[T]>,
     {
-        // SAFETY: the caller ensures that `self` is dereferencable and `index` in-bounds.
+        // SAFETY: the caller ensures that `self` is dereferenceable and `index` in-bounds.
         // As a consequence, the resulting pointer cannot be null.
         unsafe { NonNull::new_unchecked(self.as_ptr().get_unchecked_mut(index)) }
     }
diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs
index f9ea99ea8aa5c..7d5d70f17207c 100644
--- a/library/core/src/slice/mod.rs
+++ b/library/core/src/slice/mod.rs
@@ -380,7 +380,7 @@ impl<T> [T] {
         I: SliceIndex<Self>,
     {
         // SAFETY: the caller must uphold most of the safety requirements for `get_unchecked`;
-        // the slice is dereferencable because `self` is a safe reference.
+        // the slice is dereferenceable because `self` is a safe reference.
         // The returned pointer is safe because impls of `SliceIndex` have to guarantee that it is.
         unsafe { &*index.get_unchecked(self) }
     }
@@ -416,7 +416,7 @@ impl<T> [T] {
         I: SliceIndex<Self>,
     {
         // SAFETY: the caller must uphold the safety requirements for `get_unchecked_mut`;
-        // the slice is dereferencable because `self` is a safe reference.
+        // the slice is dereferenceable because `self` is a safe reference.
         // The returned pointer is safe because impls of `SliceIndex` have to guarantee that it is.
         unsafe { &mut *index.get_unchecked_mut(self) }
     }
diff --git a/library/core/src/str/mod.rs b/library/core/src/str/mod.rs
index cd5ed35be79ba..1d4600fa4a2d7 100644
--- a/library/core/src/str/mod.rs
+++ b/library/core/src/str/mod.rs
@@ -416,7 +416,7 @@ impl str {
     #[inline]
     pub unsafe fn get_unchecked<I: SliceIndex<str>>(&self, i: I) -> &I::Output {
         // SAFETY: the caller must uphold the safety contract for `get_unchecked`;
-        // the slice is dereferencable because `self` is a safe reference.
+        // the slice is dereferenceable because `self` is a safe reference.
         // The returned pointer is safe because impls of `SliceIndex` have to guarantee that it is.
         unsafe { &*i.get_unchecked(self) }
     }
@@ -451,7 +451,7 @@ impl str {
     #[inline]
     pub unsafe fn get_unchecked_mut<I: SliceIndex<str>>(&mut self, i: I) -> &mut I::Output {
         // SAFETY: the caller must uphold the safety contract for `get_unchecked_mut`;
-        // the slice is dereferencable because `self` is a safe reference.
+        // the slice is dereferenceable because `self` is a safe reference.
         // The returned pointer is safe because impls of `SliceIndex` have to guarantee that it is.
         unsafe { &mut *i.get_unchecked_mut(self) }
     }
@@ -504,7 +504,7 @@ impl str {
     #[inline]
     pub unsafe fn slice_unchecked(&self, begin: usize, end: usize) -> &str {
         // SAFETY: the caller must uphold the safety contract for `get_unchecked`;
-        // the slice is dereferencable because `self` is a safe reference.
+        // the slice is dereferenceable because `self` is a safe reference.
         // The returned pointer is safe because impls of `SliceIndex` have to guarantee that it is.
         unsafe { &*(begin..end).get_unchecked(self) }
     }
@@ -537,7 +537,7 @@ impl str {
     #[inline]
     pub unsafe fn slice_mut_unchecked(&mut self, begin: usize, end: usize) -> &mut str {
         // SAFETY: the caller must uphold the safety contract for `get_unchecked_mut`;
-        // the slice is dereferencable because `self` is a safe reference.
+        // the slice is dereferenceable because `self` is a safe reference.
         // The returned pointer is safe because impls of `SliceIndex` have to guarantee that it is.
         unsafe { &mut *(begin..end).get_unchecked_mut(self) }
     }
diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index 5f28ffeda8fee..dd179df394889 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -1564,7 +1564,9 @@ impl Step for Extended {
             builder.install(&etc.join("gfx/rust-logo.ico"), &exe, 0o644);
 
             // Generate msi installer
-            let wix = PathBuf::from(env::var_os("WIX").unwrap());
+            let wix_path = env::var_os("WIX")
+                .expect("`WIX` environment variable must be set for generating MSI installer(s).");
+            let wix = PathBuf::from(wix_path);
             let heat = wix.join("bin/heat.exe");
             let candle = wix.join("bin/candle.exe");
             let light = wix.join("bin/light.exe");
diff --git a/src/test/rustdoc/doc-notable_trait-mut_t_is_not_an_iterator.rs b/src/test/rustdoc/doc-notable_trait-mut_t_is_not_an_iterator.rs
new file mode 100644
index 0000000000000..bfce46cf4444a
--- /dev/null
+++ b/src/test/rustdoc/doc-notable_trait-mut_t_is_not_an_iterator.rs
@@ -0,0 +1,23 @@
+//! Test case for [#80737].
+//!
+//! A SomeTrait that is implemented for `&mut T where T: SomeTrait`
+//! should not be marked as "notable" for return values that do not
+//! have bounds on the trait itself.
+//!
+//! [#80737]: https://github.com/rust-lang/rust/issues/80737
+
+#![feature(rustdoc_internals)]
+#![no_std]
+
+#[doc(primitive = "reference")]
+/// Some useless docs, wouhou!
+///
+/// We need to put this in here, because notable traits
+/// that are implemented on foreign types don't show up.
+mod reference {}
+
+// @has doc_notable_trait_mut_t_is_not_an_iterator/fn.fn_no_matches.html
+// @!has - '//code[@class="content"]' 'Iterator'
+pub fn fn_no_matches<'a, T: 'a>() -> &'a mut T {
+    panic!()
+}
diff --git a/triagebot.toml b/triagebot.toml
index 7a9908fe8c075..fb9cee43b2dfb 100644
--- a/triagebot.toml
+++ b/triagebot.toml
@@ -91,6 +91,29 @@ exclude_labels = [
     "requires-nightly",
 ]
 
+[autolabel."T-rustdoc"]
+trigger_files = [
+    # Source code
+    "src/librustdoc",
+    "src/tools/rustdoc",
+    "src/rustdoc-json-types",
+
+    # Tests
+    "src/test/rustdoc",
+    "src/test/rustdoc-ui",
+    "src/test/rustdoc-gui",
+    "src/test/rustdoc-js",
+    "src/test/rustdoc-js-std",
+    "src/test/rustdoc-json",
+
+    # Internal tooling
+    "src/etc/htmldocck.py",
+    "src/tools/jsondocck",
+    "src/tools/rustdoc-gui",
+    "src/tools/rustdoc-js",
+    "src/tools/rustdoc-themes",
+]
+
 [notify-zulip."I-prioritize"]
 zulip_stream = 245100 # #t-compiler/wg-prioritization/alerts
 topic = "#{number} {title}"