Auto merge of #106833 - JohnTitor:rollup-z8398jk, r=JohnTitor

Rollup of 13 pull requests

Successful merges:

 - #104965 (reword Option::as_ref and Option::map examples)
 - #105172 (Added error documentation for write_fmt)
 - #106605 (rustdoc: fix outdated lint section of the book)
 - #106670 (Check compiler docs in PR CI)
 - #106692 (mv binary_heap.rs binary_heap/mod.rs)
 - #106693 (rustdoc: rename CSS rustdoc-toggle -> toggle and toggle -> settings-toggle)
 - #106707 (Remove duplicate sha-1 dependency)
 - #106762 (Add `AtomicPtr::as_mut_ptr`)
 - #106766 (Remove dead code in rustdoc stripper)
 - #106775 (Remove stale reference to the test suite location)
 - #106799 (Stop having unused lifetimes on some `impl`s)
 - #106816 (Update `rental` hack to work with remapped paths.)
 - #106819 (rustdoc: remove unnecessary DOM class `h1.fqn`)

Failed merges:

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

50 files changed, 487 insertions, 235 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 573fd30b8a5..735f24355a1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3014,9 +3014,9 @@ dependencies = [
 
 [[package]]
 name = "pest"
-version = "2.3.0"
+version = "2.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b0560d531d1febc25a3c9398a62a71256c0178f2e3443baedd9ad4bb8c9deb4"
+checksum = "0f6e86fb9e7026527a0d46bc308b841d73170ef8f443e1807f6ef88526a816d4"
 dependencies = [
  "thiserror",
  "ucd-trie",
@@ -3024,9 +3024,9 @@ dependencies = [
 
 [[package]]
 name = "pest_derive"
-version = "2.3.0"
+version = "2.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "905708f7f674518498c1f8d644481440f476d39ca6ecae83319bba7c6c12da91"
+checksum = "96504449aa860c8dcde14f9fba5c58dc6658688ca1fe363589d6327b8662c603"
 dependencies = [
  "pest",
  "pest_generator",
@@ -3034,9 +3034,9 @@ dependencies = [
 
 [[package]]
 name = "pest_generator"
-version = "2.3.0"
+version = "2.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5803d8284a629cc999094ecd630f55e91b561a1d1ba75e233b00ae13b91a69ad"
+checksum = "798e0220d1111ae63d66cb66a5dcb3fc2d986d520b98e49e1852bfdb11d7c5e7"
 dependencies = [
  "pest",
  "pest_meta",
@@ -3047,13 +3047,13 @@ dependencies = [
 
 [[package]]
 name = "pest_meta"
-version = "2.3.0"
+version = "2.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1538eb784f07615c6d9a8ab061089c6c54a344c5b4301db51990ca1c241e8c04"
+checksum = "984298b75898e30a843e278a9f2452c31e349a073a0ce6fd950a12a74464e065"
 dependencies = [
  "once_cell",
  "pest",
- "sha-1",
+ "sha1",
 ]
 
 [[package]]
@@ -4685,7 +4685,7 @@ dependencies = [
  "rustc_macros",
  "rustc_serialize",
  "scoped-tls",
- "sha-1",
+ "sha1",
  "sha2",
  "tracing",
  "unicode-width",
@@ -5095,17 +5095,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "sha-1"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "028f48d513f9678cda28f6e4064755b3fbb2af6acd672f2c209b62323f7aea0f"
-dependencies = [
- "cfg-if",
- "cpufeatures",
- "digest",
-]
-
-[[package]]
 name = "sha1"
 version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -5540,18 +5529,18 @@ checksum = "ceb05e71730d396f960f8f3901cdb41be2d339b303e9d7d3a07c5ff0536e671b"
 
 [[package]]
 name = "thiserror"
-version = "1.0.33"
+version = "1.0.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d0a539a918745651435ac7db7a18761589a94cd7e94cd56999f828bf73c8a57"
+checksum = "6a9cd18aa97d5c45c6603caea1da6628790b37f7a34b6ca89522331c5180fed0"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.33"
+version = "1.0.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c251e90f708e16c49a16f4917dc2131e75222b72edfa9cb7f7c58ae56aae0c09"
+checksum = "1fb327af4685e4d03fa8cbcf1716380da910eeb2bb8be417e7f9fd3fb164f36f"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -5832,9 +5821,9 @@ dependencies = [
 
 [[package]]
 name = "ucd-trie"
-version = "0.1.3"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56dee185309b50d1f11bfedef0fe6d036842e3fb77413abef29f8f8d1c5d4c1c"
+checksum = "9e79c4d996edb816c91e4308506774452e55e95c3c9de07b6729e17e15a5ef81"
 
 [[package]]
 name = "ui_test"
diff --git a/compiler/rustc_expand/src/base.rs b/compiler/rustc_expand/src/base.rs
index 00453f78287..ffde8480c02 100644
--- a/compiler/rustc_expand/src/base.rs
+++ b/compiler/rustc_expand/src/base.rs
@@ -31,11 +31,11 @@ use rustc_span::edition::Edition;
 use rustc_span::hygiene::{AstPass, ExpnData, ExpnKind, LocalExpnId};
 use rustc_span::source_map::SourceMap;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
-use rustc_span::{BytePos, FileName, RealFileName, Span, DUMMY_SP};
+use rustc_span::{BytePos, FileName, Span, DUMMY_SP};
 use smallvec::{smallvec, SmallVec};
 
 use std::iter;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::rc::Rc;
 
 pub(crate) use rustc_span::hygiene::MacroKind;
@@ -1423,8 +1423,10 @@ fn pretty_printing_compatibility_hack(item: &Item, sess: &ParseSess) -> bool {
             if let [variant] = &*enum_def.variants {
                 if variant.ident.name == sym::Input {
                     let filename = sess.source_map().span_to_filename(item.ident.span);
-                    if let FileName::Real(RealFileName::LocalPath(path)) = filename {
-                        if let Some(c) = path
+                    if let FileName::Real(real) = filename {
+                        if let Some(c) = real
+                            .local_path()
+                            .unwrap_or(Path::new(""))
                             .components()
                             .flat_map(|c| c.as_os_str().to_str())
                             .find(|c| c.starts_with("rental") || c.starts_with("allsorts-rental"))
diff --git a/compiler/rustc_span/Cargo.toml b/compiler/rustc_span/Cargo.toml
index 5ce2577b63c..ae81d95e279 100644
--- a/compiler/rustc_span/Cargo.toml
+++ b/compiler/rustc_span/Cargo.toml
@@ -15,6 +15,6 @@ scoped-tls = "1.0"
 unicode-width = "0.1.4"
 cfg-if = "1.0"
 tracing = "0.1"
-sha1 = { package = "sha-1", version = "0.10.0" }
+sha1 = "0.10.0"
 sha2 = "0.10.1"
 md5 = { package = "md-5", version = "0.10.0" }
diff --git a/library/alloc/src/collections/binary_heap.rs b/library/alloc/src/collections/binary_heap/mod.rs
index 4583bc9a158..4583bc9a158 100644
--- a/library/alloc/src/collections/binary_heap.rs
+++ b/library/alloc/src/collections/binary_heap/mod.rs
diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs
index 51e6a76cea8..fa5073e3304 100644
--- a/library/core/src/fmt/mod.rs
+++ b/library/core/src/fmt/mod.rs
@@ -174,6 +174,11 @@ pub trait Write {
     /// This method should generally not be invoked manually, but rather through
     /// the [`write!`] macro itself.
     ///
+    /// # Errors
+    ///
+    /// This function will return an instance of [`Error`] on error. Please see
+    /// [write_str](Write::write_str) for details.
+    ///
     /// # Examples
     ///
     /// ```
diff --git a/library/core/src/option.rs b/library/core/src/option.rs
index 39462dca4ff..7cc00e3f8d1 100644
--- a/library/core/src/option.rs
+++ b/library/core/src/option.rs
@@ -652,13 +652,14 @@ impl<T> Option<T> {
     ///
     /// # Examples
     ///
-    /// Converts an <code>Option<[String]></code> into an <code>Option<[usize]></code>, preserving
-    /// the original. The [`map`] method takes the `self` argument by value, consuming the original,
-    /// so this technique uses `as_ref` to first take an `Option` to a reference
-    /// to the value inside the original.
+    /// Calculates the length of an <code>Option<[String]></code> as an <code>Option<[usize]></code>
+    /// without moving the [`String`]. The [`map`] method takes the `self` argument by value,
+    /// consuming the original, so this technique uses `as_ref` to first take an `Option` to a
+    /// reference to the value inside the original.
     ///
     /// [`map`]: Option::map
     /// [String]: ../../std/string/struct.String.html "String"
+    /// [`String`]: ../../std/string/struct.String.html "String"
     ///
     /// ```
     /// let text: Option<String> = Some("Hello, world!".to_string());
@@ -946,8 +947,8 @@ impl<T> Option<T> {
     ///
     /// # Examples
     ///
-    /// Converts an <code>Option<[String]></code> into an <code>Option<[usize]></code>, consuming
-    /// the original:
+    /// Calculates the length of an <code>Option<[String]></code> as an
+    /// <code>Option<[usize]></code>, consuming the original:
     ///
     /// [String]: ../../std/string/struct.String.html "String"
     /// ```
diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs
index edc68d6fae5..14367eb09bc 100644
--- a/library/core/src/sync/atomic.rs
+++ b/library/core/src/sync/atomic.rs
@@ -1786,6 +1786,42 @@ impl<T> AtomicPtr<T> {
         // SAFETY: data races are prevented by atomic intrinsics.
         unsafe { atomic_xor(self.p.get(), core::ptr::invalid_mut(val), order).cast() }
     }
+
+    /// Returns a mutable pointer to the underlying pointer.
+    ///
+    /// Doing non-atomic reads and writes on the resulting integer can be a data race.
+    /// This method is mostly useful for FFI, where the function signature may use
+    /// `*mut *mut T` instead of `&AtomicPtr<T>`.
+    ///
+    /// Returning an `*mut` pointer from a shared reference to this atomic is safe because the
+    /// atomic types work with interior mutability. All modifications of an atomic change the value
+    /// through a shared reference, and can do so safely as long as they use atomic operations. Any
+    /// use of the returned raw pointer requires an `unsafe` block and still has to uphold the same
+    /// restriction: operations on it must be atomic.
+    ///
+    /// # Examples
+    ///
+    /// ```ignore (extern-declaration)
+    /// #![feature(atomic_mut_ptr)]
+    //// use std::sync::atomic::AtomicPtr;
+    ///
+    /// extern "C" {
+    ///     fn my_atomic_op(arg: *mut *mut u32);
+    /// }
+    ///
+    /// let mut value = 17;
+    /// let atomic = AtomicPtr::new(&mut value);
+    ///
+    /// // SAFETY: Safe as long as `my_atomic_op` is atomic.
+    /// unsafe {
+    ///     my_atomic_op(atomic.as_mut_ptr());
+    /// }
+    /// ```
+    #[inline]
+    #[unstable(feature = "atomic_mut_ptr", reason = "recently added", issue = "66893")]
+    pub fn as_mut_ptr(&self) -> *mut *mut T {
+        self.p.get()
+    }
 }
 
 #[cfg(target_has_atomic_load_store = "8")]
@@ -2678,9 +2714,9 @@ macro_rules! atomic_int {
             #[doc = concat!("    fn my_atomic_op(arg: *mut ", stringify!($int_type), ");")]
             /// }
             ///
-            #[doc = concat!("let mut atomic = ", stringify!($atomic_type), "::new(1);")]
+            #[doc = concat!("let atomic = ", stringify!($atomic_type), "::new(1);")]
             ///
-            // SAFETY: Safe as long as `my_atomic_op` is atomic.
+            /// // SAFETY: Safe as long as `my_atomic_op` is atomic.
             /// unsafe {
             ///     my_atomic_op(atomic.as_mut_ptr());
             /// }
diff --git a/library/std/src/path.rs b/library/std/src/path.rs
index 82d68369312..a2dcee0e2bd 100644
--- a/library/std/src/path.rs
+++ b/library/std/src/path.rs
@@ -3177,9 +3177,9 @@ impl<'a> IntoIterator for &'a Path {
 }
 
 macro_rules! impl_cmp {
-    ($lhs:ty, $rhs: ty) => {
+    (<$($life:lifetime),*> $lhs:ty, $rhs: ty) => {
         #[stable(feature = "partialeq_path", since = "1.6.0")]
-        impl<'a, 'b> PartialEq<$rhs> for $lhs {
+        impl<$($life),*> PartialEq<$rhs> for $lhs {
             #[inline]
             fn eq(&self, other: &$rhs) -> bool {
                 <Path as PartialEq>::eq(self, other)
@@ -3187,7 +3187,7 @@ macro_rules! impl_cmp {
         }
 
         #[stable(feature = "partialeq_path", since = "1.6.0")]
-        impl<'a, 'b> PartialEq<$lhs> for $rhs {
+        impl<$($life),*> PartialEq<$lhs> for $rhs {
             #[inline]
             fn eq(&self, other: &$lhs) -> bool {
                 <Path as PartialEq>::eq(self, other)
@@ -3195,7 +3195,7 @@ macro_rules! impl_cmp {
         }
 
         #[stable(feature = "cmp_path", since = "1.8.0")]
-        impl<'a, 'b> PartialOrd<$rhs> for $lhs {
+        impl<$($life),*> PartialOrd<$rhs> for $lhs {
             #[inline]
             fn partial_cmp(&self, other: &$rhs) -> Option<cmp::Ordering> {
                 <Path as PartialOrd>::partial_cmp(self, other)
@@ -3203,7 +3203,7 @@ macro_rules! impl_cmp {
         }
 
         #[stable(feature = "cmp_path", since = "1.8.0")]
-        impl<'a, 'b> PartialOrd<$lhs> for $rhs {
+        impl<$($life),*> PartialOrd<$lhs> for $rhs {
             #[inline]
             fn partial_cmp(&self, other: &$lhs) -> Option<cmp::Ordering> {
                 <Path as PartialOrd>::partial_cmp(self, other)
@@ -3212,16 +3212,16 @@ macro_rules! impl_cmp {
     };
 }
 
-impl_cmp!(PathBuf, Path);
-impl_cmp!(PathBuf, &'a Path);
-impl_cmp!(Cow<'a, Path>, Path);
-impl_cmp!(Cow<'a, Path>, &'b Path);
-impl_cmp!(Cow<'a, Path>, PathBuf);
+impl_cmp!(<> PathBuf, Path);
+impl_cmp!(<'a> PathBuf, &'a Path);
+impl_cmp!(<'a> Cow<'a, Path>, Path);
+impl_cmp!(<'a, 'b> Cow<'a, Path>, &'b Path);
+impl_cmp!(<'a> Cow<'a, Path>, PathBuf);
 
 macro_rules! impl_cmp_os_str {
-    ($lhs:ty, $rhs: ty) => {
+    (<$($life:lifetime),*> $lhs:ty, $rhs: ty) => {
         #[stable(feature = "cmp_path", since = "1.8.0")]
-        impl<'a, 'b> PartialEq<$rhs> for $lhs {
+        impl<$($life),*> PartialEq<$rhs> for $lhs {
             #[inline]
             fn eq(&self, other: &$rhs) -> bool {
                 <Path as PartialEq>::eq(self, other.as_ref())
@@ -3229,7 +3229,7 @@ macro_rules! impl_cmp_os_str {
         }
 
         #[stable(feature = "cmp_path", since = "1.8.0")]
-        impl<'a, 'b> PartialEq<$lhs> for $rhs {
+        impl<$($life),*> PartialEq<$lhs> for $rhs {
             #[inline]
             fn eq(&self, other: &$lhs) -> bool {
                 <Path as PartialEq>::eq(self.as_ref(), other)
@@ -3237,7 +3237,7 @@ macro_rules! impl_cmp_os_str {
         }
 
         #[stable(feature = "cmp_path", since = "1.8.0")]
-        impl<'a, 'b> PartialOrd<$rhs> for $lhs {
+        impl<$($life),*> PartialOrd<$rhs> for $lhs {
             #[inline]
             fn partial_cmp(&self, other: &$rhs) -> Option<cmp::Ordering> {
                 <Path as PartialOrd>::partial_cmp(self, other.as_ref())
@@ -3245,7 +3245,7 @@ macro_rules! impl_cmp_os_str {
         }
 
         #[stable(feature = "cmp_path", since = "1.8.0")]
-        impl<'a, 'b> PartialOrd<$lhs> for $rhs {
+        impl<$($life),*> PartialOrd<$lhs> for $rhs {
             #[inline]
             fn partial_cmp(&self, other: &$lhs) -> Option<cmp::Ordering> {
                 <Path as PartialOrd>::partial_cmp(self.as_ref(), other)
@@ -3254,20 +3254,20 @@ macro_rules! impl_cmp_os_str {
     };
 }
 
-impl_cmp_os_str!(PathBuf, OsStr);
-impl_cmp_os_str!(PathBuf, &'a OsStr);
-impl_cmp_os_str!(PathBuf, Cow<'a, OsStr>);
-impl_cmp_os_str!(PathBuf, OsString);
-impl_cmp_os_str!(Path, OsStr);
-impl_cmp_os_str!(Path, &'a OsStr);
-impl_cmp_os_str!(Path, Cow<'a, OsStr>);
-impl_cmp_os_str!(Path, OsString);
-impl_cmp_os_str!(&'a Path, OsStr);
-impl_cmp_os_str!(&'a Path, Cow<'b, OsStr>);
-impl_cmp_os_str!(&'a Path, OsString);
-impl_cmp_os_str!(Cow<'a, Path>, OsStr);
-impl_cmp_os_str!(Cow<'a, Path>, &'b OsStr);
-impl_cmp_os_str!(Cow<'a, Path>, OsString);
+impl_cmp_os_str!(<> PathBuf, OsStr);
+impl_cmp_os_str!(<'a> PathBuf, &'a OsStr);
+impl_cmp_os_str!(<'a> PathBuf, Cow<'a, OsStr>);
+impl_cmp_os_str!(<> PathBuf, OsString);
+impl_cmp_os_str!(<> Path, OsStr);
+impl_cmp_os_str!(<'a> Path, &'a OsStr);
+impl_cmp_os_str!(<'a> Path, Cow<'a, OsStr>);
+impl_cmp_os_str!(<> Path, OsString);
+impl_cmp_os_str!(<'a> &'a Path, OsStr);
+impl_cmp_os_str!(<'a, 'b> &'a Path, Cow<'b, OsStr>);
+impl_cmp_os_str!(<'a> &'a Path, OsString);
+impl_cmp_os_str!(<'a> Cow<'a, Path>, OsStr);
+impl_cmp_os_str!(<'a, 'b> Cow<'a, Path>, &'b OsStr);
+impl_cmp_os_str!(<'a> Cow<'a, Path>, OsString);
 
 #[stable(since = "1.7.0", feature = "strip_prefix")]
 impl fmt::Display for StripPrefixError {
diff --git a/src/README.md b/src/README.md
index 90ab8026970..7b357da2ffc 100644
--- a/src/README.md
+++ b/src/README.md
@@ -1,8 +1,7 @@
-This directory contains the source code of the rust project, including:
+This directory contains some source code for the Rust project, including:
 
-- The test suite
 - The bootstrapping build system
-- Various submodules for tools, like cargo, etc.
+- Various submodules for tools, like cargo, tidy, etc.
 
 For more information on how various parts of the compiler work, see the [rustc dev guide].
 
diff --git a/src/ci/docker/host-x86_64/mingw-check/Dockerfile b/src/ci/docker/host-x86_64/mingw-check/Dockerfile
index adf6bb4b377..d5bc76eeb23 100644
--- a/src/ci/docker/host-x86_64/mingw-check/Dockerfile
+++ b/src/ci/docker/host-x86_64/mingw-check/Dockerfile
@@ -45,6 +45,7 @@ ENV SCRIPT python3 ../x.py --stage 2 test src/tools/expand-yaml-anchors && \
            python3 ../x.py test --stage 0 src/tools/compiletest && \
            python3 ../x.py test --stage 0 core alloc std test proc_macro && \
            # Build both public and internal documentation.
+           RUSTDOCFLAGS=\"--document-private-items --document-hidden-items\" python3 ../x.py doc --stage 0 compiler && \
            RUSTDOCFLAGS=\"--document-private-items --document-hidden-items\" python3 ../x.py doc --stage 0 library/test && \
            /scripts/validate-toolstate.sh && \
            /scripts/validate-error-codes.sh && \
diff --git a/src/doc/rustdoc/src/lints.md b/src/doc/rustdoc/src/lints.md
index bff01d7cb7c..45db3bb9b00 100644
--- a/src/doc/rustdoc/src/lints.md
+++ b/src/doc/rustdoc/src/lints.md
@@ -261,7 +261,7 @@ typo mistakes for some common attributes.
 
 ## `invalid_html_tags`
 
-This lint is **allowed by default** and is **nightly-only**. It detects unclosed
+This lint **warns by default**. It detects unclosed
 or invalid HTML tags. For example:
 
 ```rust
diff --git a/src/librustdoc/html/render/context.rs b/src/librustdoc/html/render/context.rs
index c8899ee62b5..20b51336c35 100644
--- a/src/librustdoc/html/render/context.rs
+++ b/src/librustdoc/html/render/context.rs
@@ -639,7 +639,7 @@ impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> {
                 write!(
                     buf,
                     "<div class=\"main-heading\">\
-                     <h1 class=\"fqn\">Rustdoc settings</h1>\
+                     <h1>Rustdoc settings</h1>\
                      <span class=\"out-of-band\">\
                          <a id=\"back\" href=\"javascript:void(0)\" onclick=\"history.back();\">\
                             Back\
@@ -677,7 +677,7 @@ impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> {
                 write!(
                     buf,
                     "<div class=\"main-heading\">\
-                     <h1 class=\"fqn\">Rustdoc help</h1>\
+                     <h1>Rustdoc help</h1>\
                      <span class=\"out-of-band\">\
                          <a id=\"back\" href=\"javascript:void(0)\" onclick=\"history.back();\">\
                             Back\
diff --git a/src/librustdoc/html/render/mod.rs b/src/librustdoc/html/render/mod.rs
index 8bccf68029a..358b9185fb3 100644
--- a/src/librustdoc/html/render/mod.rs
+++ b/src/librustdoc/html/render/mod.rs
@@ -364,7 +364,7 @@ impl AllTypes {
             }
         }
 
-        f.write_str("<h1 class=\"fqn\">List of all items</h1>");
+        f.write_str("<h1>List of all items</h1>");
         // Note: print_entries does not escape the title, because we know the current set of titles
         // doesn't require escaping.
         print_entries(f, &self.structs, ItemSection::Structs);
@@ -394,7 +394,7 @@ fn scrape_examples_help(shared: &SharedContext<'_>) -> String {
     let mut ids = IdMap::default();
     format!(
         "<div class=\"main-heading\">\
-            <h1 class=\"fqn\">About scraped examples</h1>\
+            <h1>About scraped examples</h1>\
         </div>\
         <div>{}</div>",
         Markdown {
@@ -513,7 +513,7 @@ fn document_full_inner(
         debug!("Doc block: =====\n{}\n=====", s);
         if is_collapsible {
             w.write_str(
-                "<details class=\"rustdoc-toggle top-doc\" open>\
+                "<details class=\"toggle top-doc\" open>\
                 <summary class=\"hideme\">\
                      <span>Expand description</span>\
                 </summary>",
@@ -1514,7 +1514,7 @@ fn render_impl(
         let toggled = !doc_buffer.is_empty();
         if toggled {
             let method_toggle_class = if item_type.is_method() { " method-toggle" } else { "" };
-            write!(w, "<details class=\"rustdoc-toggle{}\" open><summary>", method_toggle_class);
+            write!(w, "<details class=\"toggle{}\" open><summary>", method_toggle_class);
         }
         match &*item.kind {
             clean::MethodItem(..) | clean::TyMethodItem(_) => {
@@ -1730,7 +1730,7 @@ fn render_impl(
             close_tags.insert_str(0, "</details>");
             write!(
                 w,
-                "<details class=\"rustdoc-toggle implementors-toggle\"{}>",
+                "<details class=\"toggle implementors-toggle\"{}>",
                 if rendering_params.toggle_open_by_default { " open" } else { "" }
             );
             write!(w, "<summary>")
@@ -2999,7 +2999,7 @@ fn render_call_locations(w: &mut Buffer, cx: &mut Context<'_>, item: &clean::Ite
     if it.peek().is_some() {
         write!(
             w,
-            "<details class=\"rustdoc-toggle more-examples-toggle\">\
+            "<details class=\"toggle more-examples-toggle\">\
                   <summary class=\"hideme\">\
                      <span>More examples</span>\
                   </summary>\
diff --git a/src/librustdoc/html/render/print_item.rs b/src/librustdoc/html/render/print_item.rs
index c16d6477fc3..d6e57decdcf 100644
--- a/src/librustdoc/html/render/print_item.rs
+++ b/src/librustdoc/html/render/print_item.rs
@@ -204,7 +204,7 @@ fn should_hide_fields(n_fields: usize) -> bool {
 fn toggle_open(w: &mut Buffer, text: impl fmt::Display) {
     write!(
         w,
-        "<details class=\"rustdoc-toggle type-contents-toggle\">\
+        "<details class=\"toggle type-contents-toggle\">\
             <summary class=\"hideme\">\
                 <span>Show {}</span>\
             </summary>",
@@ -733,7 +733,7 @@ fn item_trait(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, t: &clean:
         let toggled = !content.is_empty();
         if toggled {
             let method_toggle_class = if item_type.is_method() { " method-toggle" } else { "" };
-            write!(w, "<details class=\"rustdoc-toggle{method_toggle_class}\" open><summary>");
+            write!(w, "<details class=\"toggle{method_toggle_class}\" open><summary>");
         }
         write!(w, "<section id=\"{}\" class=\"method has-srclink\">", id);
         render_rightside(w, cx, m, t, RenderMode::Normal);
@@ -1840,7 +1840,7 @@ fn document_non_exhaustive(w: &mut Buffer, item: &clean::Item) {
     if item.is_non_exhaustive() {
         write!(
             w,
-            "<details class=\"rustdoc-toggle non-exhaustive\">\
+            "<details class=\"toggle non-exhaustive\">\
                  <summary class=\"hideme\"><span>{}</span></summary>\
                  <div class=\"docblock\">",
             {
diff --git a/src/librustdoc/html/render/write_shared.rs b/src/librustdoc/html/render/write_shared.rs
index 3ea4c4bea88..ca3e9916487 100644
--- a/src/librustdoc/html/render/write_shared.rs
+++ b/src/librustdoc/html/render/write_shared.rs
@@ -345,7 +345,7 @@ if (typeof exports !== 'undefined') {exports.searchIndex = searchIndex};
             };
 
             let content = format!(
-                "<h1 class=\"fqn\">List of all crates</h1><ul class=\"all-items\">{}</ul>",
+                "<h1>List of all crates</h1><ul class=\"all-items\">{}</ul>",
                 krates
                     .iter()
                     .map(|s| {
diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css
index b2fa6e82acc..2070bb54b1b 100644
--- a/src/librustdoc/html/static/css/rustdoc.css
+++ b/src/librustdoc/html/static/css/rustdoc.css
@@ -139,7 +139,7 @@ h1, h2, h3, h4 {
 .docblock > h6:first-child {
 	margin-top: 0;
 }
-h1.fqn {
+.main-heading h1 {
 	margin: 0;
 	padding: 0;
 	flex-grow: 1;
@@ -317,7 +317,7 @@ main {
 	margin-right: auto;
 }
 
-details:not(.rustdoc-toggle) summary {
+details:not(.toggle) summary {
 	margin-bottom: .6em;
 }
 
@@ -1401,7 +1401,7 @@ details.dir-entry a {
 	Unfortunately we can't yet specify contain: content or contain: strict
 	because the [-]/[+] toggles extend past the boundaries of the <details>
 	https://developer.mozilla.org/en-US/docs/Web/CSS/contain */
-details.rustdoc-toggle {
+details.toggle {
 	contain: layout;
 	position: relative;
 }
@@ -1409,26 +1409,26 @@ details.rustdoc-toggle {
 /* The hideme class is used on summary tags that contain a span with
 	placeholder text shown only when the toggle is closed. For instance,
 	"Expand description" or "Show methods". */
-details.rustdoc-toggle > summary.hideme {
+details.toggle > summary.hideme {
 	cursor: pointer;
 	font-size: 1rem;
 }
 
-details.rustdoc-toggle > summary {
+details.toggle > summary {
 	list-style: none;
 	/* focus outline is shown on `::before` instead of this */
 	outline: none;
 }
-details.rustdoc-toggle > summary::-webkit-details-marker,
-details.rustdoc-toggle > summary::marker {
+details.toggle > summary::-webkit-details-marker,
+details.toggle > summary::marker {
 	display: none;
 }
 
-details.rustdoc-toggle > summary.hideme > span {
+details.toggle > summary.hideme > span {
 	margin-left: 9px;
 }
 
-details.rustdoc-toggle > summary::before {
+details.toggle > summary::before {
 	background: url("toggle-plus-1092eb4930d581b0.svg") no-repeat top left;
 	content: "";
 	cursor: pointer;
@@ -1440,14 +1440,14 @@ details.rustdoc-toggle > summary::before {
 	filter: var(--toggle-filter);
 }
 
-details.rustdoc-toggle > summary.hideme > span,
+details.toggle > summary.hideme > span,
 .more-examples-toggle summary, .more-examples-toggle .hide-more {
 	color: var(--toggles-color);
 }
 
 /* Screen readers see the text version at the end the line.
 	Visual readers see the icon at the start of the line, but small and transparent. */
-details.rustdoc-toggle > summary::after {
+details.toggle > summary::after {
 	content: "Expand";
 	overflow: hidden;
 	width: 0;
@@ -1455,17 +1455,17 @@ details.rustdoc-toggle > summary::after {
 	position: absolute;
 }
 
-details.rustdoc-toggle > summary.hideme::after {
+details.toggle > summary.hideme::after {
 	/* "hideme" toggles already have a description when they're contracted */
 	content: "";
 }
 
-details.rustdoc-toggle > summary:focus::before,
-details.rustdoc-toggle > summary:hover::before {
+details.toggle > summary:focus::before,
+details.toggle > summary:hover::before {
 	opacity: 1;
 }
 
-details.rustdoc-toggle > summary:focus-visible::before {
+details.toggle > summary:focus-visible::before {
 	/* The SVG is black, and gets turned white using a filter in the dark themes.
 	   Do the same with the outline.
 	   The dotted 1px style is copied from Firefox's focus ring style.
@@ -1478,17 +1478,17 @@ details.non-exhaustive {
 	margin-bottom: 8px;
 }
 
-details.rustdoc-toggle > summary.hideme::before {
+details.toggle > summary.hideme::before {
 	position: relative;
 }
 
-details.rustdoc-toggle > summary:not(.hideme)::before {
+details.toggle > summary:not(.hideme)::before {
 	position: absolute;
 	left: -24px;
 	top: 4px;
 }
 
-.impl-items > details.rustdoc-toggle > summary:not(.hideme)::before {
+.impl-items > details.toggle > summary:not(.hideme)::before {
 	position: absolute;
 	left: -24px;
 }
@@ -1498,19 +1498,19 @@ details.rustdoc-toggle > summary:not(.hideme)::before {
 	affect the layout of the items to its right. To do that, we use
 	absolute positioning. Note that we also set position: relative
 	on the parent <details> to make this work properly. */
-details.rustdoc-toggle[open] > summary.hideme {
+details.toggle[open] > summary.hideme {
 	position: absolute;
 }
 
-details.rustdoc-toggle[open] > summary.hideme > span {
+details.toggle[open] > summary.hideme > span {
 	display: none;
 }
 
-details.rustdoc-toggle[open] > summary::before {
+details.toggle[open] > summary::before {
 	background: url("toggle-minus-31bbd6e4c77f5c96.svg") no-repeat top left;
 }
 
-details.rustdoc-toggle[open] > summary::after {
+details.toggle[open] > summary::after {
 	content: "Collapse";
 }
 
@@ -1660,8 +1660,8 @@ in storage.js
 		display: block;
 	}
 
-	#main-content > details.rustdoc-toggle > summary::before,
-	#main-content > div > details.rustdoc-toggle > summary::before {
+	#main-content > details.toggle > summary::before,
+	#main-content > div > details.toggle > summary::before {
 		left: -11px;
 	}
 
@@ -1715,12 +1715,12 @@ in storage.js
 	}
 
 	/* Position of the "[-]" element. */
-	details.rustdoc-toggle:not(.top-doc) > summary {
+	details.toggle:not(.top-doc) > summary {
 		margin-left: 10px;
 	}
-	.impl-items > details.rustdoc-toggle > summary:not(.hideme)::before,
-	#main-content > details.rustdoc-toggle:not(.top-doc) > summary::before,
-	#main-content > div > details.rustdoc-toggle > summary::before {
+	.impl-items > details.toggle > summary:not(.hideme)::before,
+	#main-content > details.toggle:not(.top-doc) > summary::before,
+	#main-content > div > details.toggle > summary::before {
 		left: -11px;
 	}
 
@@ -1753,8 +1753,8 @@ in storage.js
 
 @media print {
 	nav.sidebar, nav.sub, .out-of-band, a.srclink, #copy-path,
-	details.rustdoc-toggle[open] > summary::before, details.rustdoc-toggle > summary::before,
-	details.rustdoc-toggle.top-doc > summary {
+	details.toggle[open] > summary::before, details.toggle > summary::before,
+	details.toggle.top-doc > summary {
 		display: none;
 	}
 
@@ -1796,24 +1796,24 @@ in storage.js
 .impl,
 #implementors-list > .docblock,
 .impl-items > section,
-.impl-items > .rustdoc-toggle > summary,
+.impl-items > .toggle > summary,
 .methods > section,
-.methods > .rustdoc-toggle > summary
+.methods > .toggle > summary
 {
 	margin-bottom: 0.75em;
 }
 
 .variants > .docblock,
 .implementors-toggle > .docblock,
-.impl-items > .rustdoc-toggle[open]:not(:last-child),
-.methods > .rustdoc-toggle[open]:not(:last-child),
+.impl-items > .toggle[open]:not(:last-child),
+.methods > .toggle[open]:not(:last-child),
 .implementors-toggle[open]:not(:last-child) {
 	margin-bottom: 2em;
 }
 
-#trait-implementations-list .impl-items > .rustdoc-toggle:not(:last-child),
-#synthetic-implementations-list .impl-items > .rustdoc-toggle:not(:last-child),
-#blanket-implementations-list .impl-items > .rustdoc-toggle:not(:last-child) {
+#trait-implementations-list .impl-items > .toggle:not(:last-child),
+#synthetic-implementations-list .impl-items > .toggle:not(:last-child),
+#blanket-implementations-list .impl-items > .toggle:not(:last-child) {
 	margin-bottom: 1em;
 }
 
diff --git a/src/librustdoc/html/static/css/settings.css b/src/librustdoc/html/static/css/settings.css
index 875a260c811..91419093147 100644
--- a/src/librustdoc/html/static/css/settings.css
+++ b/src/librustdoc/html/static/css/settings.css
@@ -9,7 +9,7 @@
 }
 
 .setting-line .radio-line input,
-.setting-line .toggle input {
+.setting-line .settings-toggle input {
 	margin-right: 0.3em;
 	height: 1.2rem;
 	width: 1.2rem;
@@ -22,14 +22,14 @@
 .setting-line .radio-line input {
 	border-radius: 50%;
 }
-.setting-line .toggle input:checked {
+.setting-line .settings-toggle input:checked {
 	content: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40">\
 		<path d="M7,25L17,32L33,12" fill="none" stroke="black" stroke-width="5"/>\
 		<path d="M7,23L17,30L33,10" fill="none" stroke="white" stroke-width="5"/></svg>');
 }
 
 .setting-line .radio-line input + span,
-.setting-line .toggle span {
+.setting-line .settings-toggle span {
 	padding-bottom: 1px;
 }
 
@@ -50,7 +50,7 @@
 	margin-left: 0.5em;
 }
 
-.toggle {
+.settings-toggle {
 	position: relative;
 	width: 100%;
 	margin-right: 20px;
@@ -67,11 +67,11 @@
 	box-shadow: inset 0 0 0 3px var(--main-background-color);
 	background-color: var(--settings-input-color);
 }
-.setting-line .toggle input:checked {
+.setting-line .settings-toggle input:checked {
 	background-color: var(--settings-input-color);
 }
 .setting-line .radio-line input:focus,
-.setting-line .toggle input:focus {
+.setting-line .settings-toggle input:focus {
 	box-shadow: 0 0 1px 1px var(--settings-input-color);
 }
 /* In here we combine both `:focus` and `:checked` properties. */
@@ -80,6 +80,6 @@
 		0 0 2px 2px var(--settings-input-color);
 }
 .setting-line .radio-line input:hover,
-.setting-line .toggle input:hover {
+.setting-line .settings-toggle input:hover {
 	border-color: var(--settings-input-color) !important;
 }
diff --git a/src/librustdoc/html/static/js/main.js b/src/librustdoc/html/static/js/main.js
index 51aee8e7c89..4f6f8c57597 100644
--- a/src/librustdoc/html/static/js/main.js
+++ b/src/librustdoc/html/static/js/main.js
@@ -526,7 +526,7 @@ function loadCss(cssUrl) {
         }
 
         let currentNbImpls = implementors.getElementsByClassName("impl").length;
-        const traitName = document.querySelector("h1.fqn > .trait").textContent;
+        const traitName = document.querySelector(".main-heading h1 > .trait").textContent;
         const baseIdName = "impl-" + traitName + "-";
         const libs = Object.getOwnPropertyNames(imp);
         // We don't want to include impls from this JS file, when the HTML already has them.
@@ -620,7 +620,7 @@ function loadCss(cssUrl) {
     function expandAllDocs() {
         const innerToggle = document.getElementById(toggleAllDocsId);
         removeClass(innerToggle, "will-expand");
-        onEachLazy(document.getElementsByClassName("rustdoc-toggle"), e => {
+        onEachLazy(document.getElementsByClassName("toggle"), e => {
             if (!hasClass(e, "type-contents-toggle") && !hasClass(e, "more-examples-toggle")) {
                 e.open = true;
             }
@@ -632,7 +632,7 @@ function loadCss(cssUrl) {
     function collapseAllDocs() {
         const innerToggle = document.getElementById(toggleAllDocsId);
         addClass(innerToggle, "will-expand");
-        onEachLazy(document.getElementsByClassName("rustdoc-toggle"), e => {
+        onEachLazy(document.getElementsByClassName("toggle"), e => {
             if (e.parentNode.id !== "implementations-list" ||
                 (!hasClass(e, "implementors-toggle") &&
                  !hasClass(e, "type-contents-toggle"))
@@ -680,7 +680,7 @@ function loadCss(cssUrl) {
             setImplementorsTogglesOpen("blanket-implementations-list", false);
         }
 
-        onEachLazy(document.getElementsByClassName("rustdoc-toggle"), e => {
+        onEachLazy(document.getElementsByClassName("toggle"), e => {
             if (!hideLargeItemContents && hasClass(e, "type-contents-toggle")) {
                 e.open = true;
             }
@@ -823,7 +823,7 @@ function loadCss(cssUrl) {
         });
     });
 
-    onEachLazy(document.querySelectorAll(".rustdoc-toggle > summary:not(.hideme)"), el => {
+    onEachLazy(document.querySelectorAll(".toggle > summary:not(.hideme)"), el => {
         el.addEventListener("click", e => {
             if (e.target.tagName !== "SUMMARY" && e.target.tagName !== "A") {
                 e.preventDefault();
diff --git a/src/librustdoc/html/static/js/settings.js b/src/librustdoc/html/static/js/settings.js
index 589bfc79360..9ed8f63610f 100644
--- a/src/librustdoc/html/static/js/settings.js
+++ b/src/librustdoc/html/static/js/settings.js
@@ -150,10 +150,10 @@
                 });
                 output += "</div></div>";
             } else {
-                // This is a toggle.
+                // This is a checkbox toggle.
                 const checked = setting["default"] === true ? " checked" : "";
                 output += `\
-<label class="toggle">\
+<label class="settings-toggle">\
     <input type="checkbox" id="${js_data_name}"${checked}>\
     <span class="label">${setting_name}</span>\
 </label>`;
diff --git a/src/librustdoc/html/templates/print_item.html b/src/librustdoc/html/templates/print_item.html
index 611d124d4b9..ee2880bf6d1 100644
--- a/src/librustdoc/html/templates/print_item.html
+++ b/src/librustdoc/html/templates/print_item.html
@@ -1,5 +1,5 @@
 <div class="main-heading"> {#- -#}
-    <h1 class="fqn"> {#- -#}
+    <h1> {#- -#}
         {{-typ-}}
         {#- The breadcrumbs of the item path, like std::string -#}
         {%- for component in path_components -%}
diff --git a/src/librustdoc/passes/stripper.rs b/src/librustdoc/passes/stripper.rs
index f5501b3d523..048ed264623 100644
--- a/src/librustdoc/passes/stripper.rs
+++ b/src/librustdoc/passes/stripper.rs
@@ -97,17 +97,7 @@ impl<'a, 'tcx> DocFolder for Stripper<'a, 'tcx> {
             }
 
             // handled in the `strip-priv-imports` pass
-            clean::ExternCrateItem { .. } => {}
-            clean::ImportItem(ref imp) => {
-                // Because json doesn't inline imports from private modules, we need to mark
-                // the imported item as retained so it's impls won't be stripped.
-                //
-                // FIXME: Is it necessary to check for json output here: See
-                // https://github.com/rust-lang/rust/pull/100325#discussion_r941495215
-                if let Some(did) = imp.source.did && self.is_json_output {
-                    self.retained.insert(did.into());
-                }
-            }
+            clean::ExternCrateItem { .. } | clean::ImportItem(_) => {}
 
             clean::ImplItem(..) => {}
 
diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index 29501d2d3b6..845eb5af0d6 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -217,7 +217,7 @@ const PERMITTED_RUSTC_DEPENDENCIES: &[&str] = &[
     "serde",
     "serde_derive",
     "serde_json",
-    "sha-1",
+    "sha1",
     "sha2",
     "sharded-slab",
     "smallvec",
diff --git a/tests/rustdoc-gui/anchors.goml b/tests/rustdoc-gui/anchors.goml
index c9b53a1a0f7..85cb7227420 100644
--- a/tests/rustdoc-gui/anchors.goml
+++ b/tests/rustdoc-gui/anchors.goml
@@ -2,7 +2,7 @@
 
 define-function: (
     "check-colors",
-    (theme, main_color, title_color, fqn_color, fqn_type_color, src_link_color, sidebar_link_color),
+    (theme, main_color, title_color, main_heading_color, main_heading_type_color, src_link_color, sidebar_link_color),
     block {
         goto: "file://" + |DOC_PATH| + "/staged_api/struct.Foo.html"
         // This is needed to ensure that the text color is computed.
@@ -14,8 +14,8 @@ define-function: (
         reload:
 
         assert-css: ("#toggle-all-docs", {"color": |main_color|})
-        assert-css: (".fqn a:nth-of-type(1)", {"color": |fqn_color|})
-        assert-css: (".fqn a:nth-of-type(2)", {"color": |fqn_type_color|})
+        assert-css: (".main-heading h1 a:nth-of-type(1)", {"color": |main_heading_color|})
+        assert-css: (".main-heading a:nth-of-type(2)", {"color": |main_heading_type_color|})
         assert-css: (
              ".rightside .srclink",
              {"color": |src_link_color|, "text-decoration": "none solid " + |src_link_color|},
@@ -57,7 +57,7 @@ define-function: (
         assert-css: ("#top-doc-prose-title", {"color": |title_color|})
 
         assert-css: (".sidebar a", {"color": |sidebar_link_color|})
-        assert-css: ("h1.fqn a", {"color": |title_color|})
+        assert-css: (".main-heading h1 a", {"color": |title_color|})
 
         // We move the cursor over the "Implementations" title so the anchor is displayed.
         move-cursor-to: "h2#implementations"
@@ -77,8 +77,8 @@ call-function: (
         "theme": "ayu",
         "main_color": "rgb(197, 197, 197)",
         "title_color": "rgb(255, 255, 255)",
-        "fqn_color": "rgb(255, 255, 255)",
-        "fqn_type_color": "rgb(255, 160, 165)",
+        "main_heading_color": "rgb(255, 255, 255)",
+        "main_heading_type_color": "rgb(255, 160, 165)",
         "src_link_color": "rgb(57, 175, 215)",
         "sidebar_link_color": "rgb(83, 177, 219)",
     },
@@ -89,8 +89,8 @@ call-function: (
         "theme": "dark",
         "main_color": "rgb(221, 221, 221)",
         "title_color": "rgb(221, 221, 221)",
-        "fqn_color": "rgb(221, 221, 221)",
-        "fqn_type_color": "rgb(45, 191, 184)",
+        "main_heading_color": "rgb(221, 221, 221)",
+        "main_heading_type_color": "rgb(45, 191, 184)",
         "src_link_color": "rgb(210, 153, 29)",
         "sidebar_link_color": "rgb(253, 191, 53)",
     },
@@ -101,8 +101,8 @@ call-function: (
         "theme": "light",
         "main_color": "rgb(0, 0, 0)",
         "title_color": "rgb(0, 0, 0)",
-        "fqn_color": "rgb(0, 0, 0)",
-        "fqn_type_color": "rgb(173, 55, 138)",
+        "main_heading_color": "rgb(0, 0, 0)",
+        "main_heading_type_color": "rgb(173, 55, 138)",
         "src_link_color": "rgb(56, 115, 173)",
         "sidebar_link_color": "rgb(53, 109, 164)",
     },
diff --git a/tests/rustdoc-gui/headings.goml b/tests/rustdoc-gui/headings.goml
index 45b3fee26e4..e4ba5f1246d 100644
--- a/tests/rustdoc-gui/headings.goml
+++ b/tests/rustdoc-gui/headings.goml
@@ -13,7 +13,7 @@
 // 14px  0.875rem
 goto: "file://" + |DOC_PATH| + "/test_docs/struct.HeavilyDocumentedStruct.html"
 
-assert-css: ("h1.fqn", {"font-size": "24px"})
+assert-css: (".main-heading h1", {"font-size": "24px"})
 
 assert-css: ("h2#top-doc-prose-title", {"font-size": "22px"})
 assert-css: ("h2#top-doc-prose-title", {"border-bottom-width": "1px"})
@@ -52,7 +52,7 @@ assert-css: ("h6#sub-sub-heading-for-struct-impl-item-doc", {"font-size": "14px"
 
 goto: "file://" + |DOC_PATH| + "/test_docs/enum.HeavilyDocumentedEnum.html"
 
-assert-css: ("h1.fqn", {"font-size": "24px"})
+assert-css: (".main-heading h1", {"font-size": "24px"})
 
 assert-css: ("h2#top-doc-prose-title", {"font-size": "22px"})
 assert-css: ("h2#top-doc-prose-title", {"border-bottom-width": "1px"})
@@ -111,7 +111,7 @@ assert-css: ("//ul[@class='block mod']/preceding-sibling::h3", {"border-bottom-w
 
 goto: "file://" + |DOC_PATH| + "/test_docs/union.HeavilyDocumentedUnion.html"
 
-assert-css: ("h1.fqn", {"font-size": "24px"})
+assert-css: (".main-heading h1", {"font-size": "24px"})
 
 assert-css: ("h2#top-doc-prose-title", {"font-size": "22px"})
 assert-css: ("h2#top-doc-prose-title", {"border-bottom-width": "1px"})
@@ -143,7 +143,7 @@ assert-css: ("h6#sub-heading-for-union-impl-item-doc", {"border-bottom-width": "
 
 goto: "file://" + |DOC_PATH| + "/test_docs/macro.heavily_documented_macro.html"
 
-assert-css: ("h1.fqn", {"font-size": "24px"})
+assert-css: (".main-heading h1", {"font-size": "24px"})
 
 assert-css: ("h2#top-doc-prose-title", {"font-size": "22px"})
 assert-css: ("h2#top-doc-prose-title", {"border-bottom-width": "1px"})
diff --git a/tests/rustdoc-gui/method-margins.goml b/tests/rustdoc-gui/method-margins.goml
index ed36bcdec17..720268a9e7e 100644
--- a/tests/rustdoc-gui/method-margins.goml
+++ b/tests/rustdoc-gui/method-margins.goml
@@ -1,18 +1,18 @@
 // This test ensures that the margins on methods are coherent inside an impl block.
 goto: "file://" + |DOC_PATH| + "/test_docs/trait_members/struct.HasTrait.html#impl-TraitMembers-for-HasTrait"
 
-assert-count: ("#trait-implementations-list > .rustdoc-toggle", 1)
+assert-count: ("#trait-implementations-list > .toggle", 1)
 
 compare-elements-css: (
     // compare margin on type with margin on method
-    "#trait-implementations-list .impl-items > .rustdoc-toggle:nth-child(1) > summary",
-    "#trait-implementations-list .impl-items > .rustdoc-toggle:nth-child(2) > summary",
+    "#trait-implementations-list .impl-items > .toggle:nth-child(1) > summary",
+    "#trait-implementations-list .impl-items > .toggle:nth-child(2) > summary",
     ["margin"]
 )
 
 compare-elements-css: (
     // compare margin on type with margin on method
-    "#trait-implementations-list .impl-items > .rustdoc-toggle:nth-child(1)",
-    "#trait-implementations-list .impl-items > .rustdoc-toggle:nth-child(2)",
+    "#trait-implementations-list .impl-items > .toggle:nth-child(1)",
+    "#trait-implementations-list .impl-items > .toggle:nth-child(2)",
     ["margin"]
 )
diff --git a/tests/rustdoc-gui/search-result-go-to-first.goml b/tests/rustdoc-gui/search-result-go-to-first.goml
index 994fd87c996..f444baa6ce1 100644
--- a/tests/rustdoc-gui/search-result-go-to-first.goml
+++ b/tests/rustdoc-gui/search-result-go-to-first.goml
@@ -3,17 +3,17 @@
 // First, we check that the first page doesn't have the string we're looking for to ensure
 // that the feature is changing page as expected.
 goto: "file://" + |DOC_PATH| + "/test_docs/index.html"
-assert-text-false: (".fqn", "Struct test_docs::Foo")
+assert-text-false: (".main-heading h1", "Struct test_docs::Foo")
 
 // We now check that we land on the search result page if "go_to_first" isn't set.
 goto: "file://" + |DOC_PATH| + "/test_docs/index.html?search=struct%3AFoo"
 // Waiting for the search results to appear...
 wait-for: "#search-tabs"
-assert-text-false: (".fqn", "Struct test_docs::Foo")
+assert-text-false: (".main-heading h1", "Struct test_docs::Foo")
 // Ensure that the search results are displayed, not the "normal" content.
 assert-css: ("#main-content", {"display": "none"})
 
 // Now we can check that the feature is working as expected!
 goto: "file://" + |DOC_PATH| + "/test_docs/index.html?search=struct%3AFoo&go_to_first=true"
 // Waiting for the page to load...
-wait-for-text: (".fqn", "Struct test_docs::Foo")
+wait-for-text: (".main-heading h1", "Struct test_docs::Foo")
diff --git a/tests/rustdoc-gui/settings.goml b/tests/rustdoc-gui/settings.goml
index fc3beaa53fa..f236dc3e0fe 100644
--- a/tests/rustdoc-gui/settings.goml
+++ b/tests/rustdoc-gui/settings.goml
@@ -159,7 +159,7 @@ assert-text: ("#preferred-light-theme .setting-name", "Preferred light theme")
 // We now check that clicking on the toggles' text is like clicking on the checkbox.
 // To test it, we use the "Disable keyboard shortcuts".
 local-storage: {"rustdoc-disable-shortcuts": "false"}
-click: ".setting-line:last-child .toggle .label"
+click: ".setting-line:last-child .settings-toggle .label"
 assert-local-storage: {"rustdoc-disable-shortcuts": "true"}
 
 // Make sure that "Disable keyboard shortcuts" actually took effect.
@@ -169,7 +169,7 @@ assert-false: "#help-button .popover"
 wait-for-css: ("#settings-menu .popover", {"display": "block"})
 
 // Now turn keyboard shortcuts back on, and see if they work.
-click: ".setting-line:last-child .toggle .label"
+click: ".setting-line:last-child .settings-toggle .label"
 assert-local-storage: {"rustdoc-disable-shortcuts": "false"}
 press-key: "Escape"
 press-key: "?"
diff --git a/tests/rustdoc-gui/toggle-click-deadspace.goml b/tests/rustdoc-gui/toggle-click-deadspace.goml
index 029403ee13e..ac346f25b88 100644
--- a/tests/rustdoc-gui/toggle-click-deadspace.goml
+++ b/tests/rustdoc-gui/toggle-click-deadspace.goml
@@ -1,15 +1,15 @@
 // This test ensures that clicking on a method summary, but not on the "[-]",
 // doesn't toggle the <details>.
 goto: "file://" + |DOC_PATH| + "/lib2/struct.Foo.html"
-assert-attribute: (".impl-items .rustdoc-toggle", {"open": ""})
+assert-attribute: (".impl-items .toggle", {"open": ""})
 click: "h4.code-header" // This is the position of "pub" in "pub fn a_method"
-assert-attribute: (".impl-items .rustdoc-toggle", {"open": ""})
+assert-attribute: (".impl-items .toggle", {"open": ""})
 click-with-offset: (
-    ".impl-items .rustdoc-toggle summary",
+    ".impl-items .toggle summary",
     {"x": -24, "y": 8}, // This is the position of "[-]" next to that pub fn.
 )
-assert-attribute-false: (".impl-items .rustdoc-toggle", {"open": ""})
+assert-attribute-false: (".impl-items .toggle", {"open": ""})
 
 // Click the "Trait" part of "impl Trait" and verify it navigates.
 click: "#impl-Trait-for-Foo h3 a:first-of-type"
-assert-text: (".fqn", "Trait lib2::Trait")
+assert-text: (".main-heading h1", "Trait lib2::Trait")
diff --git a/tests/rustdoc-gui/toggle-docs.goml b/tests/rustdoc-gui/toggle-docs.goml
index 89ce78e3aab..c9d236e9bba 100644
--- a/tests/rustdoc-gui/toggle-docs.goml
+++ b/tests/rustdoc-gui/toggle-docs.goml
@@ -20,10 +20,10 @@ assert-text: ("#toggle-all-docs", "[−]")
 goto: "file://" + |DOC_PATH| + "/test_docs/struct.Foo.html"
 // We first check that everything is visible.
 assert-text: ("#toggle-all-docs", "[−]")
-assert-attribute: ("#implementations-list details.rustdoc-toggle", {"open": ""}, ALL)
-assert-attribute: ("#trait-implementations-list details.rustdoc-toggle", {"open": ""}, ALL)
+assert-attribute: ("#implementations-list details.toggle", {"open": ""}, ALL)
+assert-attribute: ("#trait-implementations-list details.toggle", {"open": ""}, ALL)
 assert-attribute-false: (
-    "#blanket-implementations-list > details.rustdoc-toggle",
+    "#blanket-implementations-list > details.toggle",
     {"open": ""},
     ALL,
 )
@@ -32,18 +32,18 @@ assert-attribute-false: (
 click: "#toggle-all-docs"
 wait-for-text: ("#toggle-all-docs", "[+]")
 // We check that all <details> are collapsed (except for the impl block ones).
-assert-attribute-false: ("details.rustdoc-toggle:not(.implementors-toggle)", {"open": ""}, ALL)
+assert-attribute-false: ("details.toggle:not(.implementors-toggle)", {"open": ""}, ALL)
 assert-attribute: ("#implementations-list > details.implementors-toggle", {"open": ""})
 // We now check that the other impl blocks are collapsed.
 assert-attribute-false: (
-    "#blanket-implementations-list > details.rustdoc-toggle.implementors-toggle",
+    "#blanket-implementations-list > details.toggle.implementors-toggle",
     {"open": ""},
     ALL,
 )
 // We open them all again.
 click: "#toggle-all-docs"
 wait-for-text: ("#toggle-all-docs", "[−]")
-assert-attribute: ("details.rustdoc-toggle", {"open": ""}, ALL)
+assert-attribute: ("details.toggle", {"open": ""}, ALL)
 
 // Checking the toggles style.
 show-text: true
@@ -56,12 +56,12 @@ define-function: (
         // We reload the page so the local storage settings are being used.
         reload:
 
-        assert-css: ("details.rustdoc-toggle > summary::before", {
+        assert-css: ("details.toggle > summary::before", {
             "opacity": "0.5",
             "filter": |filter|,
         }, ALL)
-        move-cursor-to: "details.rustdoc-toggle summary"
-        assert-css: ("details.rustdoc-toggle > summary:hover::before", {
+        move-cursor-to: "details.toggle summary"
+        assert-css: ("details.toggle > summary:hover::before", {
             "opacity": "1",
             "filter": |filter|,
         })
diff --git a/tests/rustdoc-gui/toggled-open-implementations.goml b/tests/rustdoc-gui/toggled-open-implementations.goml
index e4d59b5d728..000293b555f 100644
--- a/tests/rustdoc-gui/toggled-open-implementations.goml
+++ b/tests/rustdoc-gui/toggled-open-implementations.goml
@@ -2,4 +2,4 @@
 // has all the implementations toggled open by default, so users can
 // find method names in those implementations with Ctrl-F.
 goto: "file://" + |DOC_PATH| + "/test_docs/struct.Foo.html"
-assert-attribute: (".rustdoc-toggle.implementors-toggle", {"open": ""})
+assert-attribute: (".toggle.implementors-toggle", {"open": ""})
diff --git a/tests/rustdoc/index-page.rs b/tests/rustdoc/index-page.rs
index 0c947ea2e28..fc755afda4a 100644
--- a/tests/rustdoc/index-page.rs
+++ b/tests/rustdoc/index-page.rs
@@ -5,7 +5,7 @@
 #![crate_name = "foo"]
 
 // @has foo/../index.html
-// @has - '//h1[@class="fqn"]' 'List of all crates'
+// @has - '//h1' 'List of all crates'
 // @has - '//ul[@class="all-items"]//a[@href="foo/index.html"]' 'foo'
 // @has - '//ul[@class="all-items"]//a[@href="all_item_types/index.html"]' 'all_item_types'
 pub struct Foo;
diff --git a/tests/rustdoc/issue-41783.rs b/tests/rustdoc/issue-41783.rs
index 769f984a274..7578d49daa5 100644
--- a/tests/rustdoc/issue-41783.rs
+++ b/tests/rustdoc/issue-41783.rs
@@ -5,7 +5,7 @@
 // @!hasraw - '<span class="attr">#[outer]</span>'
 // @hasraw - '#![inner]</span>'
 // @!hasraw - '<span class="attr">#![inner]</span>'
-// @snapshot 'codeblock' - '//*[@class="rustdoc-toggle top-doc"]/*[@class="docblock"]//pre/code'
+// @snapshot 'codeblock' - '//*[@class="toggle top-doc"]/*[@class="docblock"]//pre/code'
 
 /// ```no_run
 /// # # space
diff --git a/tests/rustdoc/keyword.rs b/tests/rustdoc/keyword.rs
index ea127385091..4d047af3255 100644
--- a/tests/rustdoc/keyword.rs
+++ b/tests/rustdoc/keyword.rs
@@ -7,7 +7,7 @@
 // @has foo/index.html '//div[@class="sidebar-elems"]//li/a' 'Keywords'
 // @has foo/index.html '//div[@class="sidebar-elems"]//li/a/@href' '#keywords'
 // @has foo/keyword.match.html '//a[@class="keyword"]' 'match'
-// @has foo/keyword.match.html '//h1[@class="fqn"]' 'Keyword match'
+// @has foo/keyword.match.html '//h1' 'Keyword match'
 // @has foo/keyword.match.html '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has foo/index.html '//a/@href' '../foo/index.html'
 // @!has foo/foo/index.html
diff --git a/tests/rustdoc/local-reexport-doc.rs b/tests/rustdoc/local-reexport-doc.rs
index 1c8468008dd..5dc857773a3 100644
--- a/tests/rustdoc/local-reexport-doc.rs
+++ b/tests/rustdoc/local-reexport-doc.rs
@@ -4,7 +4,7 @@
 #![crate_name = "foo"]
 
 // @has 'foo/fn.g.html'
-// @has - '//*[@class="rustdoc-toggle top-doc"]/*[@class="docblock"]' \
+// @has - '//*[@class="toggle top-doc"]/*[@class="docblock"]' \
 // 'outer module inner module'
 
 mod inner_mod {
diff --git a/tests/rustdoc/mixing-doc-comments-and-attrs.rs b/tests/rustdoc/mixing-doc-comments-and-attrs.rs
index a27c5ae6d01..010058361fa 100644
--- a/tests/rustdoc/mixing-doc-comments-and-attrs.rs
+++ b/tests/rustdoc/mixing-doc-comments-and-attrs.rs
@@ -1,7 +1,7 @@
 #![crate_name = "foo"]
 
 // @has 'foo/struct.S1.html'
-// @snapshot S1_top-doc - '//details[@class="rustdoc-toggle top-doc"]/div[@class="docblock"]'
+// @snapshot S1_top-doc - '//details[@class="toggle top-doc"]/div[@class="docblock"]'
 
 #[doc = "Hello world!\n\n"]
 /// Goodbye!
@@ -9,7 +9,7 @@
 pub struct S1;
 
 // @has 'foo/struct.S2.html'
-// @snapshot S2_top-doc - '//details[@class="rustdoc-toggle top-doc"]/div[@class="docblock"]'
+// @snapshot S2_top-doc - '//details[@class="toggle top-doc"]/div[@class="docblock"]'
 
 /// Hello world!
 ///
@@ -18,7 +18,7 @@ pub struct S1;
 pub struct S2;
 
 // @has 'foo/struct.S3.html'
-// @snapshot S3_top-doc - '//details[@class="rustdoc-toggle top-doc"]/div[@class="docblock"]'
+// @snapshot S3_top-doc - '//details[@class="toggle top-doc"]/div[@class="docblock"]'
 /** Par 1
 */ ///
 /// Par 2
diff --git a/tests/rustdoc/multiple-import-levels.rs b/tests/rustdoc/multiple-import-levels.rs
index 1daae49cde9..29b67c6b2b1 100644
--- a/tests/rustdoc/multiple-import-levels.rs
+++ b/tests/rustdoc/multiple-import-levels.rs
@@ -21,14 +21,14 @@ mod c {
 }
 
 // @has 'foo/struct.Type.html'
-// @has - '//*[@class="rustdoc-toggle top-doc"]/*[@class="docblock"]' 'foo 2 1'
+// @has - '//*[@class="toggle top-doc"]/*[@class="docblock"]' 'foo 2 1'
 /// foo
 pub use b::Type;
 // @has 'foo/struct.Whatever.html'
-// @has - '//*[@class="rustdoc-toggle top-doc"]/*[@class="docblock"]' 'whatever 3 2 1'
+// @has - '//*[@class="toggle top-doc"]/*[@class="docblock"]' 'whatever 3 2 1'
 /// whatever
 pub use c::Type as Whatever;
 // @has 'foo/struct.Woof.html'
-// @has - '//*[@class="rustdoc-toggle top-doc"]/*[@class="docblock"]' 'a dog 4 2 1'
+// @has - '//*[@class="toggle top-doc"]/*[@class="docblock"]' 'a dog 4 2 1'
 /// a dog
 pub use c::Woof;
diff --git a/tests/rustdoc/primitive-reference.rs b/tests/rustdoc/primitive-reference.rs
index ea8d2d16602..c3a5eb6d324 100644
--- a/tests/rustdoc/primitive-reference.rs
+++ b/tests/rustdoc/primitive-reference.rs
@@ -9,7 +9,7 @@
 // @has - '//div[@class="sidebar-elems"]//li/a/@href' '#primitives'
 // @has foo/primitive.reference.html
 // @has - '//a[@class="primitive"]' 'reference'
-// @has - '//h1[@class="fqn"]' 'Primitive Type reference'
+// @has - '//h1' 'Primitive Type reference'
 // @has - '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 
 // There should be only one implementation listed.
diff --git a/tests/rustdoc/primitive-slice-auto-trait.rs b/tests/rustdoc/primitive-slice-auto-trait.rs
index cdddd6b6507..77922414676 100644
--- a/tests/rustdoc/primitive-slice-auto-trait.rs
+++ b/tests/rustdoc/primitive-slice-auto-trait.rs
@@ -4,7 +4,7 @@
 #![feature(rustdoc_internals)]
 
 // @has foo/primitive.slice.html '//a[@class="primitive"]' 'slice'
-// @has - '//h1[@class="fqn"]' 'Primitive Type slice'
+// @has - '//h1' 'Primitive Type slice'
 // @has - '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has - '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementations'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'impl<T> Send for [T]where T: Send'
diff --git a/tests/rustdoc/primitive-tuple-auto-trait.rs b/tests/rustdoc/primitive-tuple-auto-trait.rs
index df681457f0f..4344d24f986 100644
--- a/tests/rustdoc/primitive-tuple-auto-trait.rs
+++ b/tests/rustdoc/primitive-tuple-auto-trait.rs
@@ -4,7 +4,7 @@
 #![feature(rustdoc_internals)]
 
 // @has foo/primitive.tuple.html '//a[@class="primitive"]' 'tuple'
-// @has - '//h1[@class="fqn"]' 'Primitive Type tuple'
+// @has - '//h1' 'Primitive Type tuple'
 // @has - '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has - '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementations'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'Send'
diff --git a/tests/rustdoc/primitive-unit-auto-trait.rs b/tests/rustdoc/primitive-unit-auto-trait.rs
index 391e33bea61..61850e2462d 100644
--- a/tests/rustdoc/primitive-unit-auto-trait.rs
+++ b/tests/rustdoc/primitive-unit-auto-trait.rs
@@ -4,7 +4,7 @@
 #![feature(rustdoc_internals)]
 
 // @has foo/primitive.unit.html '//a[@class="primitive"]' 'unit'
-// @has - '//h1[@class="fqn"]' 'Primitive Type unit'
+// @has - '//h1' 'Primitive Type unit'
 // @has - '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has - '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementations'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'impl Send for ()'
diff --git a/tests/rustdoc/primitive.rs b/tests/rustdoc/primitive.rs
index 6347fdac3db..516c7c0c6fe 100644
--- a/tests/rustdoc/primitive.rs
+++ b/tests/rustdoc/primitive.rs
@@ -7,7 +7,7 @@
 // @has foo/index.html '//div[@class="sidebar-elems"]//li/a' 'Primitive Types'
 // @has foo/index.html '//div[@class="sidebar-elems"]//li/a/@href' '#primitives'
 // @has foo/primitive.i32.html '//a[@class="primitive"]' 'i32'
-// @has foo/primitive.i32.html '//h1[@class="fqn"]' 'Primitive Type i32'
+// @has foo/primitive.i32.html '//h1' 'Primitive Type i32'
 // @has foo/primitive.i32.html '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has foo/index.html '//a/@href' '../foo/index.html'
 // @!has foo/index.html '//span' '🔒'
diff --git a/tests/rustdoc/strip-block-doc-comments-stars.rs b/tests/rustdoc/strip-block-doc-comments-stars.rs
index ea28d84f1ff..ca4c93f92e0 100644
--- a/tests/rustdoc/strip-block-doc-comments-stars.rs
+++ b/tests/rustdoc/strip-block-doc-comments-stars.rs
@@ -4,7 +4,7 @@
 // block doc comments can have their lines starting with a star.
 
 // @has foo/fn.foo.html
-// @snapshot docblock - '//*[@class="rustdoc-toggle top-doc"]//*[@class="docblock"]'
+// @snapshot docblock - '//*[@class="toggle top-doc"]//*[@class="docblock"]'
 /**
  *     a
  */
diff --git a/tests/rustdoc/toggle-item-contents.rs b/tests/rustdoc/toggle-item-contents.rs
index 47a1d62f5a7..87240f233ff 100644
--- a/tests/rustdoc/toggle-item-contents.rs
+++ b/tests/rustdoc/toggle-item-contents.rs
@@ -1,15 +1,15 @@
 #![allow(unused)]
 
 // @has 'toggle_item_contents/struct.PubStruct.html'
-// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 0
+// @count - '//details[@class="toggle type-contents-toggle"]' 0
 pub struct PubStruct {
     pub a: usize,
     pub b: usize,
 }
 
 // @has 'toggle_item_contents/struct.BigPubStruct.html'
-// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
-// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show 13 fields'
+// @count - '//details[@class="toggle type-contents-toggle"]' 1
+// @has - '//details[@class="toggle type-contents-toggle"]' 'Show 13 fields'
 pub struct BigPubStruct {
     pub a: usize,
     pub b: usize,
@@ -27,8 +27,8 @@ pub struct BigPubStruct {
 }
 
 // @has 'toggle_item_contents/union.BigUnion.html'
-// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
-// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show 13 fields'
+// @count - '//details[@class="toggle type-contents-toggle"]' 1
+// @has - '//details[@class="toggle type-contents-toggle"]' 'Show 13 fields'
 pub union BigUnion {
     pub a: usize,
     pub b: usize,
@@ -46,7 +46,7 @@ pub union BigUnion {
 }
 
 // @has 'toggle_item_contents/union.Union.html'
-// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 0
+// @count - '//details[@class="toggle type-contents-toggle"]' 0
 pub union Union {
     pub a: usize,
     pub b: usize,
@@ -54,7 +54,7 @@ pub union Union {
 }
 
 // @has 'toggle_item_contents/struct.PrivStruct.html'
-// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 0
+// @count - '//details[@class="toggle type-contents-toggle"]' 0
 // @has - '//div[@class="item-decl"]' '/* private fields */'
 pub struct PrivStruct {
     a: usize,
@@ -62,7 +62,7 @@ pub struct PrivStruct {
 }
 
 // @has 'toggle_item_contents/enum.Enum.html'
-// @!has - '//details[@class="rustdoc-toggle type-contents-toggle"]' ''
+// @!has - '//details[@class="toggle type-contents-toggle"]' ''
 pub enum Enum {
     A, B, C,
     D {
@@ -72,7 +72,7 @@ pub enum Enum {
 }
 
 // @has 'toggle_item_contents/enum.EnumStructVariant.html'
-// @!has - '//details[@class="rustdoc-toggle type-contents-toggle"]' ''
+// @!has - '//details[@class="toggle type-contents-toggle"]' ''
 pub enum EnumStructVariant {
     A, B, C,
     D {
@@ -81,14 +81,14 @@ pub enum EnumStructVariant {
 }
 
 // @has 'toggle_item_contents/enum.LargeEnum.html'
-// @count - '//*[@class="rust enum"]//details[@class="rustdoc-toggle type-contents-toggle"]' 1
-// @has - '//*[@class="rust enum"]//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show 13 variants'
+// @count - '//*[@class="rust enum"]//details[@class="toggle type-contents-toggle"]' 1
+// @has - '//*[@class="rust enum"]//details[@class="toggle type-contents-toggle"]' 'Show 13 variants'
 pub enum LargeEnum {
     A, B, C, D, E, F(u8), G, H, I, J, K, L, M
 }
 
 // @has 'toggle_item_contents/trait.Trait.html'
-// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 0
+// @count - '//details[@class="toggle type-contents-toggle"]' 0
 pub trait Trait {
     type A;
     #[must_use]
@@ -97,8 +97,8 @@ pub trait Trait {
 }
 
 // @has 'toggle_item_contents/trait.GinormousTrait.html'
-// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
-// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show 16 associated items'
+// @count - '//details[@class="toggle type-contents-toggle"]' 1
+// @has - '//details[@class="toggle type-contents-toggle"]' 'Show 16 associated items'
 pub trait GinormousTrait {
     type A;
     type B;
@@ -120,8 +120,8 @@ pub trait GinormousTrait {
 }
 
 // @has 'toggle_item_contents/trait.HugeTrait.html'
-// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
-// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show 12 associated constants and 2 methods'
+// @count - '//details[@class="toggle type-contents-toggle"]' 1
+// @has - '//details[@class="toggle type-contents-toggle"]' 'Show 12 associated constants and 2 methods'
 pub trait HugeTrait {
     type A;
     const M: usize = 1;
@@ -142,8 +142,8 @@ pub trait HugeTrait {
 }
 
 // @has 'toggle_item_contents/trait.GiganticTrait.html'
-// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
-// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show 1 associated constant and 1 method'
+// @count - '//details[@class="toggle type-contents-toggle"]' 1
+// @has - '//details[@class="toggle type-contents-toggle"]' 'Show 1 associated constant and 1 method'
 pub trait GiganticTrait {
     type A;
     type B;
@@ -163,8 +163,8 @@ pub trait GiganticTrait {
 }
 
 // @has 'toggle_item_contents/trait.BigTrait.html'
-// @count - '//details[@class="rustdoc-toggle type-contents-toggle"]' 1
-// @has - '//details[@class="rustdoc-toggle type-contents-toggle"]' 'Show 14 methods'
+// @count - '//details[@class="toggle type-contents-toggle"]' 1
+// @has - '//details[@class="toggle type-contents-toggle"]' 'Show 14 methods'
 pub trait BigTrait {
     type A;
     #[must_use]
diff --git a/tests/rustdoc/toggle-method.rs b/tests/rustdoc/toggle-method.rs
index 1aa74e59659..ebc316ca8ad 100644
--- a/tests/rustdoc/toggle-method.rs
+++ b/tests/rustdoc/toggle-method.rs
@@ -4,9 +4,9 @@
 // summary. Struct methods with no documentation should not be wrapped.
 //
 // @has foo/struct.Foo.html
-// @has - '//details[@class="rustdoc-toggle method-toggle"]//summary//h4[@class="code-header"]' 'is_documented()'
-// @has - '//details[@class="rustdoc-toggle method-toggle"]//*[@class="docblock"]' 'is_documented is documented'
-// @!has - '//details[@class="rustdoc-toggle method-toggle"]//summary//h4[@class="code-header"]' 'not_documented()'
+// @has - '//details[@class="toggle method-toggle"]//summary//h4[@class="code-header"]' 'is_documented()'
+// @has - '//details[@class="toggle method-toggle"]//*[@class="docblock"]' 'is_documented is documented'
+// @!has - '//details[@class="toggle method-toggle"]//summary//h4[@class="code-header"]' 'not_documented()'
 pub struct Foo {
 }
 
diff --git a/tests/rustdoc/toggle-trait-fn.rs b/tests/rustdoc/toggle-trait-fn.rs
index 0a1f088b9ab..686a174fc8f 100644
--- a/tests/rustdoc/toggle-trait-fn.rs
+++ b/tests/rustdoc/toggle-trait-fn.rs
@@ -4,14 +4,14 @@
 // summary. Trait methods with no documentation should not be wrapped.
 //
 // @has foo/trait.Foo.html
-// @has - '//details[@class="rustdoc-toggle"]//summary//h4[@class="code-header"]' 'type Item'
-// @!has - '//details[@class="rustdoc-toggle"]//summary//h4[@class="code-header"]' 'type Item2'
-// @has -  '//details[@class="rustdoc-toggle method-toggle"]//summary//h4[@class="code-header"]' 'is_documented()'
-// @!has - '//details[@class="rustdoc-toggle method-toggle"]//summary//h4[@class="code-header"]' 'not_documented()'
-// @has -  '//details[@class="rustdoc-toggle method-toggle"]//*[@class="docblock"]' 'is_documented is documented'
-// @has -  '//details[@class="rustdoc-toggle method-toggle"]//summary//h4[@class="code-header"]' 'is_documented_optional()'
-// @!has - '//details[@class="rustdoc-toggle method-toggle"]//summary//h4[@class="code-header"]' 'not_documented_optional()'
-// @has -  '//details[@class="rustdoc-toggle method-toggle"]//*[@class="docblock"]' 'is_documented_optional is documented'
+// @has - '//details[@class="toggle"]//summary//h4[@class="code-header"]' 'type Item'
+// @!has - '//details[@class="toggle"]//summary//h4[@class="code-header"]' 'type Item2'
+// @has -  '//details[@class="toggle method-toggle"]//summary//h4[@class="code-header"]' 'is_documented()'
+// @!has - '//details[@class="toggle method-toggle"]//summary//h4[@class="code-header"]' 'not_documented()'
+// @has -  '//details[@class="toggle method-toggle"]//*[@class="docblock"]' 'is_documented is documented'
+// @has -  '//details[@class="toggle method-toggle"]//summary//h4[@class="code-header"]' 'is_documented_optional()'
+// @!has - '//details[@class="toggle method-toggle"]//summary//h4[@class="code-header"]' 'not_documented_optional()'
+// @has -  '//details[@class="toggle method-toggle"]//*[@class="docblock"]' 'is_documented_optional is documented'
 pub trait Foo {
     /// is documented
     type Item;
diff --git a/tests/ui/proc-macro/pretty-print-hack-show.stderr b/tests/ui/proc-macro/pretty-print-hack-show.local.stderr
index 873054927c9..873054927c9 100644
--- a/tests/ui/proc-macro/pretty-print-hack-show.stderr
+++ b/tests/ui/proc-macro/pretty-print-hack-show.local.stderr
diff --git a/tests/ui/proc-macro/pretty-print-hack-show.stdout b/tests/ui/proc-macro/pretty-print-hack-show.local.stdout
index 3d793d2a014..3d793d2a014 100644
--- a/tests/ui/proc-macro/pretty-print-hack-show.stdout
+++ b/tests/ui/proc-macro/pretty-print-hack-show.local.stdout
diff --git a/tests/ui/proc-macro/pretty-print-hack-show.remapped.stderr b/tests/ui/proc-macro/pretty-print-hack-show.remapped.stderr
new file mode 100644
index 00000000000..ab501384889
--- /dev/null
+++ b/tests/ui/proc-macro/pretty-print-hack-show.remapped.stderr
@@ -0,0 +1,179 @@
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+   = note: `#[deny(proc_macro_back_compat)]` on by default
+
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+
+error: aborting due to 8 previous errors
+
+Future incompatibility report: Future breakage diagnostic:
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+   = note: `#[deny(proc_macro_back_compat)]` on by default
+
+Future breakage diagnostic:
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+   = note: `#[deny(proc_macro_back_compat)]` on by default
+
+Future breakage diagnostic:
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+   = note: `#[deny(proc_macro_back_compat)]` on by default
+
+Future breakage diagnostic:
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+   = note: `#[deny(proc_macro_back_compat)]` on by default
+
+Future breakage diagnostic:
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+   = note: `#[deny(proc_macro_back_compat)]` on by default
+
+Future breakage diagnostic:
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+   = note: `#[deny(proc_macro_back_compat)]` on by default
+
+Future breakage diagnostic:
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+   = note: `#[deny(proc_macro_back_compat)]` on by default
+
+Future breakage diagnostic:
+error: using an old version of `rental`
+  --> remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6
+   |
+LL | enum ProceduralMasqueradeDummyType {
+   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
+   = note: older versions of the `rental` crate will stop compiling in future versions of Rust; please update to `rental` v0.5.6, or switch to one of the `rental` alternatives
+   = note: `#[deny(proc_macro_back_compat)]` on by default
+
diff --git a/tests/ui/proc-macro/pretty-print-hack-show.remapped.stdout b/tests/ui/proc-macro/pretty-print-hack-show.remapped.stdout
new file mode 100644
index 00000000000..61ca53b28d4
--- /dev/null
+++ b/tests/ui/proc-macro/pretty-print-hack-show.remapped.stdout
@@ -0,0 +1,44 @@
+PRINT-DERIVE INPUT (DISPLAY): enum ProceduralMasqueradeDummyType { Input, }
+PRINT-DERIVE RE-COLLECTED (DISPLAY): enum ProceduralMasqueradeDummyType { Input }
+PRINT-DERIVE INPUT (DEBUG): TokenStream [
+    Ident {
+        ident: "enum",
+        span: remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:1: 4:5 (#0),
+    },
+    Ident {
+        ident: "ProceduralMasqueradeDummyType",
+        span: remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:6: 4:35 (#0),
+    },
+    Group {
+        delimiter: Brace,
+        stream: TokenStream [
+            Ident {
+                ident: "Input",
+                span: remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:13:5: 13:10 (#0),
+            },
+        ],
+        span: remapped/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs:4:36: 14:2 (#0),
+    },
+]
+PRINT-DERIVE INPUT (DISPLAY): enum ProceduralMasqueradeDummyType { Input, }
+PRINT-DERIVE RE-COLLECTED (DISPLAY): enum ProceduralMasqueradeDummyType { Input }
+PRINT-DERIVE INPUT (DEBUG): TokenStream [
+    Ident {
+        ident: "enum",
+        span: remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:1: 4:5 (#0),
+    },
+    Ident {
+        ident: "ProceduralMasqueradeDummyType",
+        span: remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:6: 4:35 (#0),
+    },
+    Group {
+        delimiter: Brace,
+        stream: TokenStream [
+            Ident {
+                ident: "Input",
+                span: remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:13:5: 13:10 (#0),
+            },
+        ],
+        span: remapped/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs:4:36: 14:2 (#0),
+    },
+]
diff --git a/tests/ui/proc-macro/pretty-print-hack-show.rs b/tests/ui/proc-macro/pretty-print-hack-show.rs
index 9b1899e4922..e9ff66ba45a 100644
--- a/tests/ui/proc-macro/pretty-print-hack-show.rs
+++ b/tests/ui/proc-macro/pretty-print-hack-show.rs
@@ -1,5 +1,11 @@
 // aux-build:test-macros.rs
 // compile-flags: -Z span-debug
+// revisions: local remapped
+// [remapped]compile-flags: --remap-path-prefix={{src-base}}=remapped
+
+// The remapped paths are not normalized by compiletest.
+// normalize-stdout-test: "\\(proc-macro|pretty-print-hack)" -> "/$1"
+// normalize-stderr-test: "\\(proc-macro|pretty-print-hack)" -> "/$1"
 
 #![no_std] // Don't load unnecessary hygiene information from std
 extern crate std;