diff --git a/compiler/rustc_builtin_macros/src/test.rs b/compiler/rustc_builtin_macros/src/test.rs
index 7efb6cc61eecb..705141614e252 100644
--- a/compiler/rustc_builtin_macros/src/test.rs
+++ b/compiler/rustc_builtin_macros/src/test.rs
@@ -115,7 +115,7 @@ pub fn expand_test_or_bench(
             // reworked in the future to not need it, it'd be nice.
             _ => diag.struct_span_err(attr_sp, msg).forget_guarantee(),
         };
-        err.span_label(attr_sp, "the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions")
+        err.span_label(attr_sp, "the `#[test]` macro causes a function to be run on a test and has no effect on non-functions")
             .span_label(item.span, format!("expected a non-associated function, found {} {}", item.kind.article(), item.kind.descr()))
             .span_suggestion(attr_sp, "replace with conditional compilation to make the item only exist when tests are being run", "#[cfg(test)]", Applicability::MaybeIncorrect)
             .emit();
diff --git a/compiler/rustc_middle/src/lint.rs b/compiler/rustc_middle/src/lint.rs
index f3e4f1faeb05c..7b0054a96d3ea 100644
--- a/compiler/rustc_middle/src/lint.rs
+++ b/compiler/rustc_middle/src/lint.rs
@@ -274,29 +274,28 @@ pub fn explain_lint_level_source(
     }
 }
 
-pub fn struct_lint_level<'s, 'd>(
-    sess: &'s Session,
+pub fn struct_lint_level(
+    sess: &Session,
     lint: &'static Lint,
     level: Level,
     src: LintLevelSource,
     span: Option<MultiSpan>,
     msg: impl Into<DiagnosticMessage>,
-    decorate: impl 'd
-    + for<'a, 'b> FnOnce(
+    decorate: impl for<'a, 'b> FnOnce(
         &'b mut DiagnosticBuilder<'a, ()>,
     ) -> &'b mut DiagnosticBuilder<'a, ()>,
 ) {
     // Avoid codegen bloat from monomorphization by immediately doing dyn dispatch of `decorate` to
     // the "real" work.
-    fn struct_lint_level_impl<'s, 'd>(
-        sess: &'s Session,
+    fn struct_lint_level_impl(
+        sess: &Session,
         lint: &'static Lint,
         level: Level,
         src: LintLevelSource,
         span: Option<MultiSpan>,
         msg: impl Into<DiagnosticMessage>,
         decorate: Box<
-            dyn 'd
+            dyn '_
                 + for<'a, 'b> FnOnce(
                     &'b mut DiagnosticBuilder<'a, ()>,
                 ) -> &'b mut DiagnosticBuilder<'a, ()>,
diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css
index a9dbb2d4a1b42..45433fd9b65fe 100644
--- a/src/librustdoc/html/static/css/rustdoc.css
+++ b/src/librustdoc/html/static/css/rustdoc.css
@@ -184,18 +184,6 @@ h4.code-header {
 	margin: 0;
 	padding: 0;
 }
-.impl,
-.impl-items .method,
-.methods .method,
-.impl-items .type,
-.methods .type,
-.impl-items .associatedconstant,
-.methods .associatedconstant,
-.impl-items .associatedtype,
-.methods .associatedtype {
-	flex-basis: 100%;
-	position: relative;
-}
 
 #crate-search,
 h1, h2, h3, h4, h5, h6,
diff --git a/src/test/ui/test-attrs/test-on-not-fn.stderr b/src/test/ui/test-attrs/test-on-not-fn.stderr
index 23efd5bc0d9fa..fc2c5f62bedb0 100644
--- a/src/test/ui/test-attrs/test-on-not-fn.stderr
+++ b/src/test/ui/test-attrs/test-on-not-fn.stderr
@@ -2,7 +2,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:3:1
    |
 LL | #[test]
-   | ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   | ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | mod test {}
    | ----------- expected a non-associated function, found a module
    |
@@ -15,7 +15,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:6:1
    |
 LL |   #[test]
-   |   ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   |   ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | / mod loooooooooooooong_teeeeeeeeeest {
 LL | |     /*
 LL | |     this is a comment
@@ -34,7 +34,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:20:1
    |
 LL | #[test]
-   | ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   | ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | extern "C" {}
    | ------------- expected a non-associated function, found an extern block
    |
@@ -47,7 +47,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:23:1
    |
 LL | #[test]
-   | ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   | ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | trait Foo {}
    | ------------ expected a non-associated function, found a trait
    |
@@ -60,7 +60,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:26:1
    |
 LL | #[test]
-   | ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   | ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | impl Foo for i32 {}
    | ------------------- expected a non-associated function, found an implementation
    |
@@ -73,7 +73,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:29:1
    |
 LL | #[test]
-   | ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   | ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | const FOO: i32 = -1_i32;
    | ------------------------ expected a non-associated function, found a constant item
    |
@@ -86,7 +86,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:32:1
    |
 LL | #[test]
-   | ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   | ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | static BAR: u64 = 10_000_u64;
    | ----------------------------- expected a non-associated function, found a static item
    |
@@ -99,7 +99,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:35:1
    |
 LL |   #[test]
-   |   ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   |   ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | / enum MyUnit {
 LL | |     Unit,
 LL | | }
@@ -114,7 +114,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:40:1
    |
 LL | #[test]
-   | ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   | ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | struct NewI32(i32);
    | ------------------- expected a non-associated function, found a struct
    |
@@ -127,7 +127,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:43:1
    |
 LL |   #[test]
-   |   ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   |   ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | / union Spooky {
 LL | |     x: i32,
 LL | |     y: u32,
@@ -143,7 +143,7 @@ error: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:50:1
    |
 LL |   #[test]
-   |   ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   |   ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL |   #[derive(Copy, Clone, Debug)]
 LL | / struct MoreAttrs {
 LL | |     a: i32,
@@ -160,7 +160,7 @@ warning: the `#[test]` attribute may only be used on a non-associated function
   --> $DIR/test-on-not-fn.rs:61:1
    |
 LL | #[test]
-   | ^^^^^^^ the `#[test]` macro causes a a function to be run on a test and has no effect on non-functions
+   | ^^^^^^^ the `#[test]` macro causes a function to be run on a test and has no effect on non-functions
 LL | foo!();
    | ------- expected a non-associated function, found an item macro invocation
    |
diff --git a/src/tools/rust-analyzer/crates/ide-db/src/imports/merge_imports.rs b/src/tools/rust-analyzer/crates/ide-db/src/imports/merge_imports.rs
index 7fb4b90e6d992..371d642c15d1d 100644
--- a/src/tools/rust-analyzer/crates/ide-db/src/imports/merge_imports.rs
+++ b/src/tools/rust-analyzer/crates/ide-db/src/imports/merge_imports.rs
@@ -225,7 +225,7 @@ fn path_cmp_short(a: &ast::Path, b: &ast::Path) -> Ordering {
 }
 
 /// Compares two paths, if one ends earlier than the other the has_tl parameters decide which is
-/// greater as a a path that has a tree list should be greater, while one that just ends without
+/// greater as a path that has a tree list should be greater, while one that just ends without
 /// a tree list should be considered less.
 pub(super) fn use_tree_path_cmp(
     a: &ast::Path,
diff --git a/src/tools/rust-analyzer/crates/rust-analyzer/src/bin/logger.rs b/src/tools/rust-analyzer/crates/rust-analyzer/src/bin/logger.rs
index 298814af5a465..ac10721d95514 100644
--- a/src/tools/rust-analyzer/crates/rust-analyzer/src/bin/logger.rs
+++ b/src/tools/rust-analyzer/crates/rust-analyzer/src/bin/logger.rs
@@ -132,7 +132,7 @@ where
 
             let ext = span.extensions();
 
-            // `FormattedFields` is a a formatted representation of the span's
+            // `FormattedFields` is a formatted representation of the span's
             // fields, which is stored in its extensions by the `fmt` layer's
             // `new_span` method. The fields will have been formatted
             // by the same field formatter that's provided to the event