Perform match checking on THIR.

compiler/rustc_hir/src/pat_util.rs

@@ -2,7 +2,6 @@
 use crate::def_id::DefId;
 use crate::hir::{self, BindingAnnotation, ByRef, HirId, PatKind};
 use rustc_data_structures::fx::FxHashSet;
-use rustc_span::hygiene::DesugaringKind;
 use rustc_span::symbol::Ident;
 use rustc_span::Span;
 
@@ -136,14 +135,4 @@ pub fn contains_explicit_ref_binding(&self) -> Option<hir::Mutability> {
         });
         result
     }
-
-    /// If the pattern is `Some(<pat>)` from a desugared for loop, returns the inner pattern
-    pub fn for_loop_some(&self) -> Option<&Self> {
-        if self.span.desugaring_kind() == Some(DesugaringKind::ForLoop) {
-            if let hir::PatKind::Struct(_, [pat_field], _) = self.kind {
-                return Some(pat_field.pat);
-            }
-        }
-        None
-    }
 }

compiler/rustc_mir_build/messages.ftl

@@ -239,19 +239,9 @@ mir_build_trailing_irrefutable_let_patterns = trailing irrefutable {$count ->
     } into the body
 
 mir_build_bindings_with_variant_name =
-    pattern binding `{$ident}` is named the same as one of the variants of the type `{$ty_path}`
+    pattern binding `{$name}` is named the same as one of the variants of the type `{$ty_path}`
     .suggestion = to match on the variant, qualify the path
 
-mir_build_irrefutable_let_patterns_generic_let = irrefutable `let` {$count ->
-        [one] pattern
-        *[other] patterns
-    }
-    .note = {$count ->
-        [one] this pattern
-        *[other] these patterns
-    } will always match, so the `let` is useless
-    .help = consider removing `let`
-
 mir_build_irrefutable_let_patterns_if_let = irrefutable `if let` {$count ->
         [one] pattern
         *[other] patterns

compiler/rustc_mir_build/src/build/mod.rs

@@ -58,6 +58,7 @@ fn mir_build(tcx: TyCtxt<'_>, def: ty::WithOptConstParam<LocalDefId>) -> Body<'_
         ty::WithOptConstParam { did, const_param_did: None } => {
             tcx.ensure_with_value().thir_check_unsafety(did);
             tcx.ensure_with_value().thir_abstract_const(did);
+            tcx.ensure_with_value().check_match(did);
         }
     }
 

compiler/rustc_mir_build/src/errors.rs

@@ -10,7 +10,8 @@
 use rustc_macros::{Diagnostic, LintDiagnostic, Subdiagnostic};
 use rustc_middle::thir::Pat;
 use rustc_middle::ty::{self, Ty};
-use rustc_span::{symbol::Ident, Span};
+use rustc_span::symbol::Symbol;
+use rustc_span::Span;
 
 #[derive(LintDiagnostic)]
 #[diag(mir_build_unconditional_recursion)]
@@ -534,18 +535,10 @@ pub struct TrailingIrrefutableLetPatterns {
 #[derive(LintDiagnostic)]
 #[diag(mir_build_bindings_with_variant_name, code = "E0170")]
 pub struct BindingsWithVariantName {
-    #[suggestion(code = "{ty_path}::{ident}", applicability = "machine-applicable")]
+    #[suggestion(code = "{ty_path}::{name}", applicability = "machine-applicable")]
     pub suggestion: Option<Span>,
     pub ty_path: String,
-    pub ident: Ident,
-}
-
-#[derive(LintDiagnostic)]
-#[diag(mir_build_irrefutable_let_patterns_generic_let)]
-#[note]
-#[help]
-pub struct IrrefutableLetPatternsGenericLet {
-    pub count: usize,
+    pub name: Symbol,
 }
 
 #[derive(LintDiagnostic)]
@@ -590,7 +583,7 @@ pub struct BorrowOfMovedValue<'tcx> {
     pub binding_span: Span,
     #[label(mir_build_value_borrowed_label)]
     pub conflicts_ref: Vec<Span>,
-    pub name: Ident,
+    pub name: Symbol,
     pub ty: Ty<'tcx>,
     #[suggestion(code = "ref ", applicability = "machine-applicable")]
     pub suggest_borrowing: Option<Span>,
@@ -638,19 +631,19 @@ pub enum Conflict {
     Mut {
         #[primary_span]
         span: Span,
-        name: Ident,
+        name: Symbol,
     },
     #[label(mir_build_borrow)]
     Ref {
         #[primary_span]
         span: Span,
-        name: Ident,
+        name: Symbol,
     },
     #[label(mir_build_moved)]
     Moved {
         #[primary_span]
         span: Span,
-        name: Ident,
+        name: Symbol,
     },
 }
 

compiler/rustc_mir_build/src/thir/pattern/mod.rs

@@ -54,11 +54,9 @@ pub(super) fn pat_from_hir<'a, 'tcx>(
     pat: &'tcx hir::Pat<'tcx>,
 ) -> Box<Pat<'tcx>> {
     let mut pcx = PatCtxt::new(tcx, param_env, typeck_results);
+    pcx.include_lint_checks();
     let result = pcx.lower_pattern(pat);
-    if !pcx.errors.is_empty() {
-        let msg = format!("encountered errors lowering pattern: {:?}", pcx.errors);
-        tcx.sess.delay_span_bug(pat.span, &msg);
-    }
+    pcx.report_inlining_errors();
     debug!("pat_from_hir({:?}) = {:?}", pat, result);
     result
 }
@@ -77,6 +75,25 @@ fn include_lint_checks(&mut self) -> &mut Self {
         self
     }
 
+    fn report_inlining_errors(&self) {
+        for error in &self.errors {
+            match *error {
+                PatternError::StaticInPattern(span) => {
+                    self.tcx.sess.emit_err(StaticInPattern { span });
+                }
+                PatternError::AssocConstInPattern(span) => {
+                    self.tcx.sess.emit_err(AssocConstInPattern { span });
+                }
+                PatternError::ConstParamInPattern(span) => {
+                    self.tcx.sess.emit_err(ConstParamInPattern { span });
+                }
+                PatternError::NonConstPath(span) => {
+                    self.tcx.sess.emit_err(NonConstPath { span });
+                }
+            }
+        }
+    }
+
     fn lower_pattern(&mut self, pat: &'tcx hir::Pat<'tcx>) -> Box<Pat<'tcx>> {
         // When implicit dereferences have been inserted in this pattern, the unadjusted lowered
         // pattern has the type that results *after* dereferencing. For example, in this code:

tests/ui/chalkify/bugs/async.stderr

@@ -14,14 +14,15 @@ LL | async fn foo(x: u32) -> u32 {
    |                         ^^^query stack during panic:
 #0 [typeck] type-checking `foo`
 #1 [thir_body] building THIR for `foo`
-#2 [mir_built] building MIR for `foo`
-#3 [unsafety_check_result] unsafety-checking `foo`
-#4 [mir_const] preparing `foo` for borrow checking
-#5 [mir_promoted] processing MIR for `foo`
-#6 [mir_borrowck] borrow-checking `foo`
-#7 [type_of] computing type of `foo::{opaque#0}`
-#8 [check_mod_item_types] checking item types in top-level module
-#9 [analysis] running analysis passes on this crate
+#2 [check_match] match-checking `foo`
+#3 [mir_built] building MIR for `foo`
+#4 [unsafety_check_result] unsafety-checking `foo`
+#5 [mir_const] preparing `foo` for borrow checking
+#6 [mir_promoted] processing MIR for `foo`
+#7 [mir_borrowck] borrow-checking `foo`
+#8 [type_of] computing type of `foo::{opaque#0}`
+#9 [check_mod_item_types] checking item types in top-level module
+#10 [analysis] running analysis passes on this crate
 end of query stack
 error: aborting due to 2 previous errors
 

tests/ui/consts/const-eval/const-eval-overflow-2.rs

@@ -14,7 +14,6 @@ fn main() {
     match -128i8 {
         NEG_NEG_128 => println!("A"),
         //~^ ERROR could not evaluate constant pattern
-        //~| ERROR could not evaluate constant pattern
         _ => println!("B"),
     }
 }

tests/ui/consts/const-eval/const-eval-overflow-2.stderr

@@ -10,12 +10,6 @@ error: could not evaluate constant pattern
 LL |         NEG_NEG_128 => println!("A"),
    |         ^^^^^^^^^^^
 
-error: could not evaluate constant pattern
-  --> $DIR/const-eval-overflow-2.rs:15:9
-   |
-LL |         NEG_NEG_128 => println!("A"),
-   |         ^^^^^^^^^^^
-
-error: aborting due to 3 previous errors
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.

tests/ui/consts/const-eval/ref_to_int_match.32bit.stderr

@@ -1,5 +1,5 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ref_to_int_match.rs:25:27
+  --> $DIR/ref_to_int_match.rs:24:27
    |
 LL | const BAR: Int = unsafe { Foo { r: &42 }.f };
    |                           ^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
@@ -13,12 +13,6 @@ error: could not evaluate constant pattern
 LL |         10..=BAR => {},
    |              ^^^
 
-error: could not evaluate constant pattern
-  --> $DIR/ref_to_int_match.rs:7:14
-   |
-LL |         10..=BAR => {},
-   |              ^^^
-
-error: aborting due to 3 previous errors
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.

tests/ui/consts/const-eval/ref_to_int_match.64bit.stderr

@@ -1,5 +1,5 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ref_to_int_match.rs:25:27
+  --> $DIR/ref_to_int_match.rs:24:27
    |
 LL | const BAR: Int = unsafe { Foo { r: &42 }.f };
    |                           ^^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes
@@ -13,12 +13,6 @@ error: could not evaluate constant pattern
 LL |         10..=BAR => {},
    |              ^^^
 
-error: could not evaluate constant pattern
-  --> $DIR/ref_to_int_match.rs:7:14
-   |
-LL |         10..=BAR => {},
-   |              ^^^
-
-error: aborting due to 3 previous errors
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0080`.

tests/ui/consts/const-eval/ref_to_int_match.rs

@@ -5,7 +5,6 @@ fn main() {
     match n {
         0..=10 => {},
         10..=BAR => {}, //~ ERROR could not evaluate constant pattern
-                        //~| ERROR could not evaluate constant pattern
         _ => {},
     }
 }

tests/ui/consts/const-match-check.eval1.stderr

@@ -9,8 +9,8 @@ LL |     A = { let 0 = 0; 0 },
    = note: the matched value is of type `i32`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL |     A = { if let 0 = 0 { todo!() } 0 },
-   |           ++           ~~~~~~~~~~~
+LL |     A = { if let 0 = 0 { todo!() }; 0 },
+   |           ++           +++++++++++
 help: alternatively, you could prepend the pattern with an underscore to define a new named variable; identifiers cannot begin with digits
    |
 LL |     A = { let _0 = 0; 0 },

tests/ui/consts/const-match-check.eval2.stderr

@@ -9,8 +9,8 @@ LL |     let x: [i32; { let 0 = 0; 0 }] = [];
    = note: the matched value is of type `i32`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL |     let x: [i32; { if let 0 = 0 { todo!() } 0 }] = [];
-   |                    ++           ~~~~~~~~~~~
+LL |     let x: [i32; { if let 0 = 0 { todo!() }; 0 }] = [];
+   |                    ++           +++++++++++
 help: alternatively, you could prepend the pattern with an underscore to define a new named variable; identifiers cannot begin with digits
    |
 LL |     let x: [i32; { let _0 = 0; 0 }] = [];

tests/ui/consts/const-match-check.matchck.stderr

@@ -9,8 +9,8 @@ LL | const X: i32 = { let 0 = 0; 0 };
    = note: the matched value is of type `i32`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL | const X: i32 = { if let 0 = 0 { todo!() } 0 };
-   |                  ++           ~~~~~~~~~~~
+LL | const X: i32 = { if let 0 = 0 { todo!() }; 0 };
+   |                  ++           +++++++++++
 help: alternatively, you could prepend the pattern with an underscore to define a new named variable; identifiers cannot begin with digits
    |
 LL | const X: i32 = { let _0 = 0; 0 };
@@ -27,8 +27,8 @@ LL | static Y: i32 = { let 0 = 0; 0 };
    = note: the matched value is of type `i32`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL | static Y: i32 = { if let 0 = 0 { todo!() } 0 };
-   |                   ++           ~~~~~~~~~~~
+LL | static Y: i32 = { if let 0 = 0 { todo!() }; 0 };
+   |                   ++           +++++++++++
 help: alternatively, you could prepend the pattern with an underscore to define a new named variable; identifiers cannot begin with digits
    |
 LL | static Y: i32 = { let _0 = 0; 0 };
@@ -45,8 +45,8 @@ LL |     const X: i32 = { let 0 = 0; 0 };
    = note: the matched value is of type `i32`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL |     const X: i32 = { if let 0 = 0 { todo!() } 0 };
-   |                      ++           ~~~~~~~~~~~
+LL |     const X: i32 = { if let 0 = 0 { todo!() }; 0 };
+   |                      ++           +++++++++++
 help: alternatively, you could prepend the pattern with an underscore to define a new named variable; identifiers cannot begin with digits
    |
 LL |     const X: i32 = { let _0 = 0; 0 };
@@ -63,8 +63,8 @@ LL |     const X: i32 = { let 0 = 0; 0 };
    = note: the matched value is of type `i32`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL |     const X: i32 = { if let 0 = 0 { todo!() } 0 };
-   |                      ++           ~~~~~~~~~~~
+LL |     const X: i32 = { if let 0 = 0 { todo!() }; 0 };
+   |                      ++           +++++++++++
 help: alternatively, you could prepend the pattern with an underscore to define a new named variable; identifiers cannot begin with digits
    |
 LL |     const X: i32 = { let _0 = 0; 0 };

tests/ui/consts/const-pattern-irrefutable.rs

@@ -12,17 +12,14 @@ fn main() {
     let a = 4;
     //~^ ERROR refutable pattern in local binding
     //~| patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered
-    //~| missing patterns are not covered because `a` is interpreted as a constant pattern, not a new variable
-    //~| HELP introduce a variable instead
+    //~| HELP you might want to use `if let` to ignore the variants that aren't matched
     let c = 4;
     //~^ ERROR refutable pattern in local binding
     //~| patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered
-    //~| missing patterns are not covered because `c` is interpreted as a constant pattern, not a new variable
-    //~| HELP introduce a variable instead
+    //~| HELP you might want to use `if let` to ignore the variants that aren't matched
     let d = 4;
     //~^ ERROR refutable pattern in local binding
     //~| patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered
-    //~| missing patterns are not covered because `d` is interpreted as a constant pattern, not a new variable
-    //~| HELP introduce a variable instead
+    //~| HELP you might want to use `if let` to ignore the variants that aren't matched
     fn f() {} // Check that the `NOTE`s still work with an item here (cf. issue #35115).
 }

tests/ui/consts/const-pattern-irrefutable.stderr

@@ -1,47 +1,44 @@
 error[E0005]: refutable pattern in local binding
   --> $DIR/const-pattern-irrefutable.rs:12:9
    |
-LL | const a: u8 = 2;
-   | ----------- constant defined here
-...
 LL |     let a = 4;
-   |         ^
-   |         |
-   |         patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered
-   |         missing patterns are not covered because `a` is interpreted as a constant pattern, not a new variable
-   |         help: introduce a variable instead: `a_var`
+   |         ^ patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered
    |
+   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
+   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
    = note: the matched value is of type `u8`
+help: you might want to use `if let` to ignore the variants that aren't matched
+   |
+LL |     if let a = 4 { todo!() };
+   |     ++           +++++++++++
 
 error[E0005]: refutable pattern in local binding
-  --> $DIR/const-pattern-irrefutable.rs:17:9
+  --> $DIR/const-pattern-irrefutable.rs:16:9
    |
-LL |     pub const b: u8 = 2;
-   |     --------------- constant defined here
-...
 LL |     let c = 4;
-   |         ^
-   |         |
-   |         patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered
-   |         missing patterns are not covered because `c` is interpreted as a constant pattern, not a new variable
-   |         help: introduce a variable instead: `c_var`
+   |         ^ patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered
    |
+   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
+   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
    = note: the matched value is of type `u8`
+help: you might want to use `if let` to ignore the variants that aren't matched
+   |
+LL |     if let c = 4 { todo!() };
+   |     ++           +++++++++++
 
 error[E0005]: refutable pattern in local binding
-  --> $DIR/const-pattern-irrefutable.rs:22:9
+  --> $DIR/const-pattern-irrefutable.rs:20:9
    |
-LL |     pub const d: u8 = 2;
-   |     --------------- constant defined here
-...
 LL |     let d = 4;
-   |         ^
-   |         |
-   |         patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered
-   |         missing patterns are not covered because `d` is interpreted as a constant pattern, not a new variable
-   |         help: introduce a variable instead: `d_var`
+   |         ^ patterns `0_u8..=1_u8` and `3_u8..=u8::MAX` not covered
    |
+   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
+   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
    = note: the matched value is of type `u8`
+help: you might want to use `if let` to ignore the variants that aren't matched
+   |
+LL |     if let d = 4 { todo!() };
+   |     ++           +++++++++++
 
 error: aborting due to 3 previous errors
 

tests/ui/consts/const_in_pattern/incomplete-slice.stderr

@@ -19,7 +19,7 @@ LL |     match &[][..] {
    = note: the matched value is of type `&[E]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         E_SL => {}
+LL ~         E_SL => {},
 LL +         &_ => todo!()
    |
 

tests/ui/consts/issue-43105.rs

@@ -7,7 +7,6 @@ fn main() {
     match 1 {
         NUM => unimplemented!(),
         //~^ ERROR could not evaluate constant pattern
-        //~| ERROR could not evaluate constant pattern
         _ => unimplemented!(),
     }
 }

tests/ui/consts/issue-43105.stderr

@@ -12,12 +12,6 @@ error: could not evaluate constant pattern
 LL |         NUM => unimplemented!(),
    |         ^^^
 
-error: could not evaluate constant pattern
-  --> $DIR/issue-43105.rs:8:9
-   |
-LL |         NUM => unimplemented!(),
-   |         ^^^
-
-error: aborting due to 3 previous errors
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0015`.

tests/ui/consts/issue-73976-polymorphic.rs

@@ -19,7 +19,6 @@ impl<T: 'static> GetTypeId<T> {
 const fn check_type_id<T: 'static>() -> bool {
     matches!(GetTypeId::<T>::VALUE, GetTypeId::<T>::VALUE)
     //~^ ERROR constant pattern depends on a generic parameter
-    //~| ERROR constant pattern depends on a generic parameter
 }
 
 pub struct GetTypeNameLen<T>(T);
@@ -31,7 +30,6 @@ impl<T: 'static> GetTypeNameLen<T> {
 const fn check_type_name_len<T: 'static>() -> bool {
     matches!(GetTypeNameLen::<T>::VALUE, GetTypeNameLen::<T>::VALUE)
     //~^ ERROR constant pattern depends on a generic parameter
-    //~| ERROR constant pattern depends on a generic parameter
 }
 
 fn main() {

tests/ui/consts/issue-73976-polymorphic.stderr

@@ -5,22 +5,10 @@ LL |     matches!(GetTypeId::<T>::VALUE, GetTypeId::<T>::VALUE)
    |                                     ^^^^^^^^^^^^^^^^^^^^^
 
 error: constant pattern depends on a generic parameter
-  --> $DIR/issue-73976-polymorphic.rs:32:42
+  --> $DIR/issue-73976-polymorphic.rs:31:42
    |
 LL |     matches!(GetTypeNameLen::<T>::VALUE, GetTypeNameLen::<T>::VALUE)
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: constant pattern depends on a generic parameter
-  --> $DIR/issue-73976-polymorphic.rs:20:37
-   |
-LL |     matches!(GetTypeId::<T>::VALUE, GetTypeId::<T>::VALUE)
-   |                                     ^^^^^^^^^^^^^^^^^^^^^
-
-error: constant pattern depends on a generic parameter
-  --> $DIR/issue-73976-polymorphic.rs:32:42
-   |
-LL |     matches!(GetTypeNameLen::<T>::VALUE, GetTypeNameLen::<T>::VALUE)
-   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: aborting due to 4 previous errors
+error: aborting due to 2 previous errors
 

tests/ui/consts/issue-78655.rs

@@ -6,5 +6,4 @@
 fn main() {
     let FOO = FOO;
     //~^ ERROR could not evaluate constant pattern
-    //~| ERROR could not evaluate constant pattern
 }

tests/ui/consts/issue-78655.stderr

@@ -17,12 +17,6 @@ error: could not evaluate constant pattern
 LL |     let FOO = FOO;
    |         ^^^
 
-error: could not evaluate constant pattern
-  --> $DIR/issue-78655.rs:7:9
-   |
-LL |     let FOO = FOO;
-   |         ^^^
-
-error: aborting due to 3 previous errors
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0381`.

tests/ui/consts/issue-79137-toogeneric.rs

@@ -11,7 +11,6 @@ impl<T> GetVariantCount<T> {
 const fn check_variant_count<T>() -> bool {
     matches!(GetVariantCount::<T>::VALUE, GetVariantCount::<T>::VALUE)
     //~^ ERROR constant pattern depends on a generic parameter
-    //~| ERROR constant pattern depends on a generic parameter
 }
 
 fn main() {

tests/ui/consts/issue-79137-toogeneric.stderr

@@ -4,11 +4,5 @@ error: constant pattern depends on a generic parameter
 LL |     matches!(GetVariantCount::<T>::VALUE, GetVariantCount::<T>::VALUE)
    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: constant pattern depends on a generic parameter
-  --> $DIR/issue-79137-toogeneric.rs:12:43
-   |
-LL |     matches!(GetVariantCount::<T>::VALUE, GetVariantCount::<T>::VALUE)
-   |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: aborting due to 2 previous errors
+error: aborting due to previous error
 

tests/ui/consts/miri_unleashed/const_refers_to_static_cross_crate.32bit.stderr

@@ -27,7 +27,7 @@ LL | const U8_MUT: &u8 = {
            }
 
 error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:43:9
+  --> $DIR/const_refers_to_static_cross_crate.rs:42:9
    |
 LL |         U8_MUT => true,
    |         ^^^^^^
@@ -39,7 +39,7 @@ LL |     unsafe { &(*static_cross_crate::ZERO_REF)[0] }
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constant accesses static
 
 error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:54:9
+  --> $DIR/const_refers_to_static_cross_crate.rs:52:9
    |
 LL |         U8_MUT2 => true,
    |         ^^^^^^^
@@ -51,31 +51,7 @@ LL |     unsafe { match static_cross_crate::OPT_ZERO { Some(ref u) => u, None =>
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constant accesses static
 
 error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:62:9
-   |
-LL |         U8_MUT3 => true,
-   |         ^^^^^^^
-
-error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:34:9
-   |
-LL |         SLICE_MUT => true,
-   |         ^^^^^^^^^
-
-error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:43:9
-   |
-LL |         U8_MUT => true,
-   |         ^^^^^^
-
-error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:54:9
-   |
-LL |         U8_MUT2 => true,
-   |         ^^^^^^^
-
-error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:62:9
+  --> $DIR/const_refers_to_static_cross_crate.rs:59:9
    |
 LL |         U8_MUT3 => true,
    |         ^^^^^^^
@@ -133,6 +109,6 @@ help: skipping check that does not even have a feature gate
 LL |     unsafe { match static_cross_crate::OPT_ZERO { Some(ref u) => u, None => panic!() } }
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 12 previous errors; 1 warning emitted
+error: aborting due to 8 previous errors; 1 warning emitted
 
 For more information about this error, try `rustc --explain E0080`.

tests/ui/consts/miri_unleashed/const_refers_to_static_cross_crate.64bit.stderr

@@ -27,7 +27,7 @@ LL | const U8_MUT: &u8 = {
            }
 
 error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:43:9
+  --> $DIR/const_refers_to_static_cross_crate.rs:42:9
    |
 LL |         U8_MUT => true,
    |         ^^^^^^
@@ -39,7 +39,7 @@ LL |     unsafe { &(*static_cross_crate::ZERO_REF)[0] }
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constant accesses static
 
 error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:54:9
+  --> $DIR/const_refers_to_static_cross_crate.rs:52:9
    |
 LL |         U8_MUT2 => true,
    |         ^^^^^^^
@@ -51,31 +51,7 @@ LL |     unsafe { match static_cross_crate::OPT_ZERO { Some(ref u) => u, None =>
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constant accesses static
 
 error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:62:9
-   |
-LL |         U8_MUT3 => true,
-   |         ^^^^^^^
-
-error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:34:9
-   |
-LL |         SLICE_MUT => true,
-   |         ^^^^^^^^^
-
-error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:43:9
-   |
-LL |         U8_MUT => true,
-   |         ^^^^^^
-
-error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:54:9
-   |
-LL |         U8_MUT2 => true,
-   |         ^^^^^^^
-
-error: could not evaluate constant pattern
-  --> $DIR/const_refers_to_static_cross_crate.rs:62:9
+  --> $DIR/const_refers_to_static_cross_crate.rs:59:9
    |
 LL |         U8_MUT3 => true,
    |         ^^^^^^^
@@ -133,6 +109,6 @@ help: skipping check that does not even have a feature gate
 LL |     unsafe { match static_cross_crate::OPT_ZERO { Some(ref u) => u, None => panic!() } }
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 12 previous errors; 1 warning emitted
+error: aborting due to 8 previous errors; 1 warning emitted
 
 For more information about this error, try `rustc --explain E0080`.

tests/ui/consts/miri_unleashed/const_refers_to_static_cross_crate.rs

@@ -33,7 +33,6 @@
     match x {
         SLICE_MUT => true,
         //~^ ERROR could not evaluate constant pattern
-        //~| ERROR could not evaluate constant pattern
         &[1..] => false,
     }
 }
@@ -42,7 +41,6 @@ pub fn test2(x: &u8) -> bool {
     match x {
         U8_MUT => true,
         //~^ ERROR could not evaluate constant pattern
-        //~| ERROR could not evaluate constant pattern
         &(1..) => false,
     }
 }
@@ -53,7 +51,6 @@ pub fn test3(x: &u8) -> bool {
     match x {
         U8_MUT2 => true,
         //~^ ERROR could not evaluate constant pattern
-        //~| ERROR could not evaluate constant pattern
         &(1..) => false,
     }
 }
@@ -61,7 +58,6 @@ pub fn test4(x: &u8) -> bool {
     match x {
         U8_MUT3 => true,
         //~^ ERROR could not evaluate constant pattern
-        //~| ERROR could not evaluate constant pattern
         &(1..) => false,
     }
 }

tests/ui/error-codes/E0004.stderr

@@ -14,7 +14,7 @@ LL |     HastaLaVistaBaby,
    = note: the matched value is of type `Terminator`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         Terminator::TalkToMyHand => {}
+LL ~         Terminator::TalkToMyHand => {},
 LL +         Terminator::HastaLaVistaBaby => todo!()
    |
 

tests/ui/error-codes/E0030-teach.rs

@@ -4,6 +4,5 @@ fn main() {
     match 5u32 {
         1000 ..= 5 => {}
         //~^ ERROR lower range bound must be less than or equal to upper
-        //~| ERROR lower range bound must be less than or equal to upper
     }
 }

tests/ui/error-codes/E0030-teach.stderr

@@ -6,12 +6,6 @@ LL |         1000 ..= 5 => {}
    |
    = note: When matching against a range, the compiler verifies that the range is non-empty. Range patterns include both end-points, so this is equivalent to requiring the start of the range to be less than or equal to the end of the range.
 
-error[E0030]: lower range bound must be less than or equal to upper
-  --> $DIR/E0030-teach.rs:5:9
-   |
-LL |         1000 ..= 5 => {}
-   |         ^^^^ lower bound larger than upper bound
-
-error: aborting due to 2 previous errors
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0030`.

tests/ui/error-codes/E0030.rs

@@ -2,6 +2,5 @@ fn main() {
     match 5u32 {
         1000 ..= 5 => {}
         //~^ ERROR lower range bound must be less than or equal to upper
-        //~| ERROR lower range bound must be less than or equal to upper
     }
 }

tests/ui/error-codes/E0030.stderr

@@ -4,12 +4,6 @@ error[E0030]: lower range bound must be less than or equal to upper
 LL |         1000 ..= 5 => {}
    |         ^^^^ lower bound larger than upper bound
 
-error[E0030]: lower range bound must be less than or equal to upper
-  --> $DIR/E0030.rs:3:9
-   |
-LL |         1000 ..= 5 => {}
-   |         ^^^^ lower bound larger than upper bound
-
-error: aborting due to 2 previous errors
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0030`.

tests/ui/feature-gates/feature-gate-non_exhaustive_omitted_patterns_lint.stderr

@@ -115,7 +115,7 @@ LL |         A, B, C,
    = note: the matched value is of type `Foo`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         Foo::B => {}
+LL ~         Foo::B => {},
 LL +         Foo::C => todo!()
    |
 

tests/ui/feature-gates/feature-gate-precise_pointer_size_matching.stderr

@@ -9,7 +9,7 @@ LL |     match 0usize {
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `usize` matching
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         0..=usize::MAX => {}
+LL ~         0..=usize::MAX => {},
 LL +         _ => todo!()
    |
 
@@ -24,7 +24,7 @@ LL |     match 0isize {
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `isize` matching
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         isize::MIN..=isize::MAX => {}
+LL ~         isize::MIN..=isize::MAX => {},
 LL +         _ => todo!()
    |
 

tests/ui/half-open-range-patterns/half-open-range-pats-thir-lower-empty.rs

@@ -10,44 +10,31 @@ macro_rules! m {
 fn main() {
     m!(0, ..u8::MIN);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
     m!(0, ..u16::MIN);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
     m!(0, ..u32::MIN);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
     m!(0, ..u64::MIN);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
     m!(0, ..u128::MIN);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
 
     m!(0, ..i8::MIN);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
     m!(0, ..i16::MIN);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
     m!(0, ..i32::MIN);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
     m!(0, ..i64::MIN);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
     m!(0, ..i128::MIN);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
 
     m!(0f32, ..f32::NEG_INFINITY);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
     m!(0f64, ..f64::NEG_INFINITY);
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
 
     m!('a', ..'\u{0}');
     //~^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
 }

tests/ui/half-open-range-patterns/half-open-range-pats-thir-lower-empty.stderr

@@ -5,155 +5,77 @@ LL |     m!(0, ..u8::MIN);
    |           ^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:14:11
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:13:11
    |
 LL |     m!(0, ..u16::MIN);
    |           ^^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:17:11
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:15:11
    |
 LL |     m!(0, ..u32::MIN);
    |           ^^^^^^^^^^
 
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:20:11
-   |
-LL |     m!(0, ..u64::MIN);
-   |           ^^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:23:11
-   |
-LL |     m!(0, ..u128::MIN);
-   |           ^^^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:27:11
-   |
-LL |     m!(0, ..i8::MIN);
-   |           ^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:30:11
-   |
-LL |     m!(0, ..i16::MIN);
-   |           ^^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:33:11
-   |
-LL |     m!(0, ..i32::MIN);
-   |           ^^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:36:11
-   |
-LL |     m!(0, ..i64::MIN);
-   |           ^^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:39:11
-   |
-LL |     m!(0, ..i128::MIN);
-   |           ^^^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:43:14
-   |
-LL |     m!(0f32, ..f32::NEG_INFINITY);
-   |              ^^^^^^^^^^^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:46:14
-   |
-LL |     m!(0f64, ..f64::NEG_INFINITY);
-   |              ^^^^^^^^^^^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:50:13
-   |
-LL |     m!('a', ..'\u{0}');
-   |             ^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:11:11
-   |
-LL |     m!(0, ..u8::MIN);
-   |           ^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:14:11
-   |
-LL |     m!(0, ..u16::MIN);
-   |           ^^^^^^^^^^
-
 error[E0579]: lower range bound must be less than upper
   --> $DIR/half-open-range-pats-thir-lower-empty.rs:17:11
    |
-LL |     m!(0, ..u32::MIN);
-   |           ^^^^^^^^^^
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:20:11
-   |
 LL |     m!(0, ..u64::MIN);
    |           ^^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:23:11
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:19:11
    |
 LL |     m!(0, ..u128::MIN);
    |           ^^^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:27:11
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:22:11
    |
 LL |     m!(0, ..i8::MIN);
    |           ^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:30:11
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:24:11
    |
 LL |     m!(0, ..i16::MIN);
    |           ^^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:33:11
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:26:11
    |
 LL |     m!(0, ..i32::MIN);
    |           ^^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:36:11
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:28:11
    |
 LL |     m!(0, ..i64::MIN);
    |           ^^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:39:11
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:30:11
    |
 LL |     m!(0, ..i128::MIN);
    |           ^^^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:43:14
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:33:14
    |
 LL |     m!(0f32, ..f32::NEG_INFINITY);
    |              ^^^^^^^^^^^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:46:14
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:35:14
    |
 LL |     m!(0f64, ..f64::NEG_INFINITY);
    |              ^^^^^^^^^^^^^^^^^^^
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/half-open-range-pats-thir-lower-empty.rs:50:13
+  --> $DIR/half-open-range-pats-thir-lower-empty.rs:38:13
    |
 LL |     m!('a', ..'\u{0}');
    |             ^^^^^^^^^
 
-error: aborting due to 26 previous errors
+error: aborting due to 13 previous errors
 
 For more information about this error, try `rustc --explain E0579`.

tests/ui/impl-trait/auto-trait-leak.stderr

@@ -29,6 +29,11 @@ note: ...which requires building MIR for `cycle1`...
    |
 LL | fn cycle1() -> impl Clone {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^
+note: ...which requires match-checking `cycle1`...
+  --> $DIR/auto-trait-leak.rs:12:1
+   |
+LL | fn cycle1() -> impl Clone {
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^
 note: ...which requires building THIR for `cycle1`...
   --> $DIR/auto-trait-leak.rs:12:1
    |
@@ -70,6 +75,11 @@ note: ...which requires building MIR for `cycle2`...
    |
 LL | fn cycle2() -> impl Clone {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^
+note: ...which requires match-checking `cycle2`...
+  --> $DIR/auto-trait-leak.rs:19:1
+   |
+LL | fn cycle2() -> impl Clone {
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^
 note: ...which requires building THIR for `cycle2`...
   --> $DIR/auto-trait-leak.rs:19:1
    |

tests/ui/inline-const/const-match-pat-generic.rs

@@ -7,7 +7,6 @@ fn foo<const V: usize>() {
     match 0 {
         const { V } => {},
         //~^ ERROR constant pattern depends on a generic parameter
-        //~| ERROR constant pattern depends on a generic parameter
         _ => {},
     }
 }
@@ -20,7 +19,6 @@ fn bar<const V: usize>() {
     match 0 {
         const { f(V) } => {},
         //~^ ERROR constant pattern depends on a generic parameter
-        //~| ERROR constant pattern depends on a generic parameter
         _ => {},
     }
 }

tests/ui/inline-const/const-match-pat-generic.stderr

@@ -5,22 +5,10 @@ LL |         const { V } => {},
    |         ^^^^^^^^^^^
 
 error: constant pattern depends on a generic parameter
-  --> $DIR/const-match-pat-generic.rs:21:9
+  --> $DIR/const-match-pat-generic.rs:20:9
    |
 LL |         const { f(V) } => {},
    |         ^^^^^^^^^^^^^^
 
-error: constant pattern depends on a generic parameter
-  --> $DIR/const-match-pat-generic.rs:8:9
-   |
-LL |         const { V } => {},
-   |         ^^^^^^^^^^^
-
-error: constant pattern depends on a generic parameter
-  --> $DIR/const-match-pat-generic.rs:21:9
-   |
-LL |         const { f(V) } => {},
-   |         ^^^^^^^^^^^^^^
-
-error: aborting due to 4 previous errors
+error: aborting due to 2 previous errors
 

tests/ui/match/match-range-fail-2.rs

@@ -3,22 +3,19 @@
 fn main() {
     match 5 {
         6 ..= 1 => { }
+        //~^ ERROR lower range bound must be less than or equal to upper
         _ => { }
     };
-    //~^^^ ERROR lower range bound must be less than or equal to upper
-    //~| ERROR lower range bound must be less than or equal to upper
 
     match 5 {
         0 .. 0 => { }
+        //~^ ERROR lower range bound must be less than upper
         _ => { }
     };
-    //~^^^ ERROR lower range bound must be less than upper
-    //~| ERROR lower range bound must be less than upper
 
     match 5u64 {
         0xFFFF_FFFF_FFFF_FFFF ..= 1 => { }
+        //~^ ERROR lower range bound must be less than or equal to upper
         _ => { }
     };
-    //~^^^ ERROR lower range bound must be less than or equal to upper
-    //~| ERROR lower range bound must be less than or equal to upper
 }

tests/ui/match/match-range-fail-2.stderr

@@ -5,36 +5,18 @@ LL |         6 ..= 1 => { }
    |         ^ lower bound larger than upper bound
 
 error[E0579]: lower range bound must be less than upper
-  --> $DIR/match-range-fail-2.rs:12:9
+  --> $DIR/match-range-fail-2.rs:11:9
    |
 LL |         0 .. 0 => { }
    |         ^
 
 error[E0030]: lower range bound must be less than or equal to upper
-  --> $DIR/match-range-fail-2.rs:19:9
+  --> $DIR/match-range-fail-2.rs:17:9
    |
 LL |         0xFFFF_FFFF_FFFF_FFFF ..= 1 => { }
    |         ^^^^^^^^^^^^^^^^^^^^^ lower bound larger than upper bound
 
-error[E0030]: lower range bound must be less than or equal to upper
-  --> $DIR/match-range-fail-2.rs:5:9
-   |
-LL |         6 ..= 1 => { }
-   |         ^ lower bound larger than upper bound
-
-error[E0579]: lower range bound must be less than upper
-  --> $DIR/match-range-fail-2.rs:12:9
-   |
-LL |         0 .. 0 => { }
-   |         ^
-
-error[E0030]: lower range bound must be less than or equal to upper
-  --> $DIR/match-range-fail-2.rs:19:9
-   |
-LL |         0xFFFF_FFFF_FFFF_FFFF ..= 1 => { }
-   |         ^^^^^^^^^^^^^^^^^^^^^ lower bound larger than upper bound
-
-error: aborting due to 6 previous errors
+error: aborting due to 3 previous errors
 
 Some errors have detailed explanations: E0030, E0579.
 For more information about an error, try `rustc --explain E0030`.

tests/ui/never_type/exhaustive_patterns.stderr

@@ -17,8 +17,8 @@ LL |     B(inner::Wrapper<B>),
    = note: the matched value is of type `Either<(), !>`
 help: you might want to use `if let` to ignore the variant that isn't matched
    |
-LL |     if let Either::A(()) = foo() { todo!() }
-   |     ++                           ~~~~~~~~~~~
+LL |     if let Either::A(()) = foo() { todo!() };
+   |     ++                           +++++++++++
 
 error: aborting due to previous error
 

tests/ui/or-patterns/exhaustiveness-non-exhaustive.stderr

@@ -7,7 +7,7 @@ LL |     match (0u8, 0u8) {
    = note: the matched value is of type `(u8, u8)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         (0 | 1, 2 | 3) => {}
+LL ~         (0 | 1, 2 | 3) => {},
 LL +         (2_u8..=u8::MAX, _) => todo!()
    |
 
@@ -20,7 +20,7 @@ LL |     match ((0u8,),) {
    = note: the matched value is of type `((u8,),)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         ((0 | 1,) | (2 | 3,),) => {}
+LL ~         ((0 | 1,) | (2 | 3,),) => {},
 LL +         ((4_u8..=u8::MAX)) => todo!()
    |
 
@@ -33,7 +33,7 @@ LL |     match (Some(0u8),) {
    = note: the matched value is of type `(Option<u8>,)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         (None | Some(0 | 1),) => {}
+LL ~         (None | Some(0 | 1),) => {},
 LL +         (Some(2_u8..=u8::MAX)) => todo!()
    |
 

tests/ui/or-patterns/issue-69875-should-have-been-expanded-earlier-non-exhaustive.stderr

@@ -9,8 +9,8 @@ LL |     let (0 | (1 | 2)) = 0;
    = note: the matched value is of type `i32`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL |     if let (0 | (1 | 2)) = 0 { todo!() }
-   |     ++                       ~~~~~~~~~~~
+LL |     if let (0 | (1 | 2)) = 0 { todo!() };
+   |     ++                       +++++++++++
 
 error[E0004]: non-exhaustive patterns: `i32::MIN..=-1_i32` and `3_i32..=i32::MAX` not covered
   --> $DIR/issue-69875-should-have-been-expanded-earlier-non-exhaustive.rs:3:11
@@ -21,7 +21,7 @@ LL |     match 0 {
    = note: the matched value is of type `i32`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         0 | (1 | 2) => {}
+LL ~         0 | (1 | 2) => {},
 LL +         i32::MIN..=-1_i32 | 3_i32..=i32::MAX => todo!()
    |
 

tests/ui/pattern/issue-106552.stderr

@@ -9,8 +9,8 @@ LL |     let 5 = 6;
    = note: the matched value is of type `i32`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL |     if let 5 = 6 { todo!() }
-   |     ++           ~~~~~~~~~~~
+LL |     if let 5 = 6 { todo!() };
+   |     ++           +++++++++++
 help: alternatively, you could prepend the pattern with an underscore to define a new named variable; identifiers cannot begin with digits
    |
 LL |     let _5 = 6;
@@ -20,7 +20,7 @@ error[E0005]: refutable pattern in local binding
   --> $DIR/issue-106552.rs:5:9
    |
 LL |     let x @ 5 = 6;
-   |         ^^^^^ patterns `i32::MIN..=4_i32` and `6_i32..=i32::MAX` not covered
+   |         ^ patterns `i32::MIN..=4_i32` and `6_i32..=i32::MAX` not covered
    |
    = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
    = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html

tests/ui/pattern/issue-68393-let-pat-assoc-constant.stderr

@@ -1,15 +1,15 @@
-error[E0158]: associated consts cannot be referenced in patterns
-  --> $DIR/issue-68393-let-pat-assoc-constant.rs:20:40
-   |
-LL | pub fn test<A: Foo, B: Foo>(arg: EFoo, A::X: EFoo) {
-   |                                        ^^^^
-
 error[E0158]: associated consts cannot be referenced in patterns
   --> $DIR/issue-68393-let-pat-assoc-constant.rs:22:9
    |
 LL |     let A::X = arg;
    |         ^^^^
 
+error[E0158]: associated consts cannot be referenced in patterns
+  --> $DIR/issue-68393-let-pat-assoc-constant.rs:20:40
+   |
+LL | pub fn test<A: Foo, B: Foo>(arg: EFoo, A::X: EFoo) {
+   |                                        ^^^^
+
 error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0158`.

tests/ui/pattern/suggest-adding-appropriate-missing-pattern-excluding-comments.fixed

@@ -4,7 +4,7 @@ fn main() {
     match Some(1) { //~ ERROR non-exhaustive patterns: `None` not covered
         Some(1) => {}
         // hello
-        Some(_) => {}
+        Some(_) => {},
         None => todo!()
     }
 }

tests/ui/pattern/suggest-adding-appropriate-missing-pattern-excluding-comments.stderr

@@ -12,7 +12,7 @@ note: `Option<i32>` defined here
    = note: the matched value is of type `Option<i32>`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         Some(_) => {}
+LL ~         Some(_) => {},
 LL +         None => todo!()
    |
 

tests/ui/pattern/usefulness/consts-opaque.stderr

@@ -7,21 +7,6 @@ LL |         FOO => {}
    = note: the traits must be derived, manual `impl`s are not sufficient
    = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
 
-error: unreachable pattern
-  --> $DIR/consts-opaque.rs:32:9
-   |
-LL |         FOO => {}
-   |         --- matches any value
-LL |
-LL |         _ => {} // should not be emitting unreachable warning
-   |         ^ unreachable pattern
-   |
-note: the lint level is defined here
-  --> $DIR/consts-opaque.rs:6:9
-   |
-LL | #![deny(unreachable_patterns)]
-   |         ^^^^^^^^^^^^^^^^^^^^
-
 error: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]`
   --> $DIR/consts-opaque.rs:37:9
    |
@@ -31,15 +16,6 @@ LL |         FOO_REF => {}
    = note: the traits must be derived, manual `impl`s are not sufficient
    = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
 
-error: unreachable pattern
-  --> $DIR/consts-opaque.rs:39:9
-   |
-LL |         FOO_REF => {}
-   |         ------- matches any value
-LL |
-LL |         Foo(_) => {} // should not be emitting unreachable warning
-   |         ^^^^^^ unreachable pattern
-
 warning: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]`
   --> $DIR/consts-opaque.rs:45:9
    |
@@ -61,23 +37,6 @@ LL |         BAR => {} // should not be emitting unreachable warning
    = note: the traits must be derived, manual `impl`s are not sufficient
    = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
 
-error: unreachable pattern
-  --> $DIR/consts-opaque.rs:53:9
-   |
-LL |         Bar => {}
-   |         --- matches any value
-LL |         BAR => {} // should not be emitting unreachable warning
-   |         ^^^ unreachable pattern
-
-error: unreachable pattern
-  --> $DIR/consts-opaque.rs:56:9
-   |
-LL |         Bar => {}
-   |         --- matches any value
-...
-LL |         _ => {}
-   |         ^ unreachable pattern
-
 error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]`
   --> $DIR/consts-opaque.rs:61:9
    |
@@ -87,24 +46,6 @@ LL |         BAR => {}
    = note: the traits must be derived, manual `impl`s are not sufficient
    = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
 
-error: unreachable pattern
-  --> $DIR/consts-opaque.rs:63:9
-   |
-LL |         BAR => {}
-   |         --- matches any value
-LL |
-LL |         Bar => {} // should not be emitting unreachable warning
-   |         ^^^ unreachable pattern
-
-error: unreachable pattern
-  --> $DIR/consts-opaque.rs:65:9
-   |
-LL |         BAR => {}
-   |         --- matches any value
-...
-LL |         _ => {}
-   |         ^ unreachable pattern
-
 error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]`
   --> $DIR/consts-opaque.rs:70:9
    |
@@ -123,6 +64,92 @@ LL |         BAR => {} // should not be emitting unreachable warning
    = note: the traits must be derived, manual `impl`s are not sufficient
    = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
 
+error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]`
+  --> $DIR/consts-opaque.rs:80:9
+   |
+LL |         BAZ => {}
+   |         ^^^
+   |
+   = note: the traits must be derived, manual `impl`s are not sufficient
+   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
+
+error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]`
+  --> $DIR/consts-opaque.rs:90:9
+   |
+LL |         BAZ => {}
+   |         ^^^
+   |
+   = note: the traits must be derived, manual `impl`s are not sufficient
+   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
+
+error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]`
+  --> $DIR/consts-opaque.rs:97:9
+   |
+LL |         BAZ => {}
+   |         ^^^
+   |
+   = note: the traits must be derived, manual `impl`s are not sufficient
+   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
+
+error: unreachable pattern
+  --> $DIR/consts-opaque.rs:32:9
+   |
+LL |         FOO => {}
+   |         --- matches any value
+LL |
+LL |         _ => {} // should not be emitting unreachable warning
+   |         ^ unreachable pattern
+   |
+note: the lint level is defined here
+  --> $DIR/consts-opaque.rs:6:9
+   |
+LL | #![deny(unreachable_patterns)]
+   |         ^^^^^^^^^^^^^^^^^^^^
+
+error: unreachable pattern
+  --> $DIR/consts-opaque.rs:39:9
+   |
+LL |         FOO_REF => {}
+   |         ------- matches any value
+LL |
+LL |         Foo(_) => {} // should not be emitting unreachable warning
+   |         ^^^^^^ unreachable pattern
+
+error: unreachable pattern
+  --> $DIR/consts-opaque.rs:53:9
+   |
+LL |         Bar => {}
+   |         --- matches any value
+LL |         BAR => {} // should not be emitting unreachable warning
+   |         ^^^ unreachable pattern
+
+error: unreachable pattern
+  --> $DIR/consts-opaque.rs:56:9
+   |
+LL |         Bar => {}
+   |         --- matches any value
+...
+LL |         _ => {}
+   |         ^ unreachable pattern
+
+error: unreachable pattern
+  --> $DIR/consts-opaque.rs:63:9
+   |
+LL |         BAR => {}
+   |         --- matches any value
+LL |
+LL |         Bar => {} // should not be emitting unreachable warning
+   |         ^^^ unreachable pattern
+
+error: unreachable pattern
+  --> $DIR/consts-opaque.rs:65:9
+   |
+LL |         BAR => {}
+   |         --- matches any value
+...
+LL |         _ => {}
+   |         ^ unreachable pattern
+
 error: unreachable pattern
   --> $DIR/consts-opaque.rs:72:9
    |
@@ -141,15 +168,6 @@ LL |         BAR => {}
 LL |         _ => {} // should not be emitting unreachable warning
    |         ^ unreachable pattern
 
-error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]`
-  --> $DIR/consts-opaque.rs:80:9
-   |
-LL |         BAZ => {}
-   |         ^^^
-   |
-   = note: the traits must be derived, manual `impl`s are not sufficient
-   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
-
 error: unreachable pattern
   --> $DIR/consts-opaque.rs:82:9
    |
@@ -168,15 +186,6 @@ LL |         BAZ => {}
 LL |         _ => {}
    |         ^ unreachable pattern
 
-error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]`
-  --> $DIR/consts-opaque.rs:90:9
-   |
-LL |         BAZ => {}
-   |         ^^^
-   |
-   = note: the traits must be derived, manual `impl`s are not sufficient
-   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
-
 error: unreachable pattern
   --> $DIR/consts-opaque.rs:92:9
    |
@@ -186,15 +195,6 @@ LL |
 LL |         _ => {}
    |         ^ unreachable pattern
 
-error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]`
-  --> $DIR/consts-opaque.rs:97:9
-   |
-LL |         BAZ => {}
-   |         ^^^
-   |
-   = note: the traits must be derived, manual `impl`s are not sufficient
-   = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details
-
 error: unreachable pattern
   --> $DIR/consts-opaque.rs:99:9
    |

tests/ui/pattern/usefulness/doc-hidden-non-exhaustive.stderr

@@ -12,7 +12,7 @@ LL | pub enum HiddenEnum {
    = note: the matched value is of type `HiddenEnum`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         HiddenEnum::B => {}
+LL ~         HiddenEnum::B => {},
 LL +         _ => todo!()
    |
 
@@ -33,7 +33,7 @@ LL |     B,
    = note: the matched value is of type `HiddenEnum`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         HiddenEnum::C => {}
+LL ~         HiddenEnum::C => {},
 LL +         HiddenEnum::B => todo!()
    |
 
@@ -54,7 +54,7 @@ LL |     B,
    = note: the matched value is of type `HiddenEnum`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         HiddenEnum::A => {}
+LL ~         HiddenEnum::A => {},
 LL +         HiddenEnum::B | _ => todo!()
    |
 
@@ -72,7 +72,7 @@ note: `Option<HiddenEnum>` defined here
    = note: the matched value is of type `Option<HiddenEnum>`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         Some(HiddenEnum::A) => {}
+LL ~         Some(HiddenEnum::A) => {},
 LL +         Some(HiddenEnum::B) | Some(_) => todo!()
    |
 
@@ -93,7 +93,7 @@ LL |     C,
    = note: the matched value is of type `InCrate`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         InCrate::B => {}
+LL ~         InCrate::B => {},
 LL +         InCrate::C => todo!()
    |
 

tests/ui/pattern/usefulness/empty-match.exhaustive_patterns.stderr

@@ -162,7 +162,7 @@ LL |     match_guarded_arm!(0u8);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             _ => todo!()
    |
 
@@ -180,7 +180,7 @@ LL | struct NonEmptyStruct1;
    = note: the matched value is of type `NonEmptyStruct1`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyStruct1 => todo!()
    |
 
@@ -198,7 +198,7 @@ LL | struct NonEmptyStruct2(bool);
    = note: the matched value is of type `NonEmptyStruct2`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyStruct2(_) => todo!()
    |
 
@@ -216,7 +216,7 @@ LL | union NonEmptyUnion1 {
    = note: the matched value is of type `NonEmptyUnion1`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyUnion1 { .. } => todo!()
    |
 
@@ -234,7 +234,7 @@ LL | union NonEmptyUnion2 {
    = note: the matched value is of type `NonEmptyUnion2`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyUnion2 { .. } => todo!()
    |
 
@@ -254,7 +254,7 @@ LL |     Foo(bool),
    = note: the matched value is of type `NonEmptyEnum1`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyEnum1::Foo(_) => todo!()
    |
 
@@ -276,7 +276,7 @@ LL |     Bar,
    = note: the matched value is of type `NonEmptyEnum2`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyEnum2::Foo(_) | NonEmptyEnum2::Bar => todo!()
    |
 
@@ -294,7 +294,7 @@ LL | enum NonEmptyEnum5 {
    = note: the matched value is of type `NonEmptyEnum5`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown, or multiple match arms
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             _ => todo!()
    |
 

tests/ui/pattern/usefulness/empty-match.normal.stderr

@@ -162,7 +162,7 @@ LL |     match_guarded_arm!(0u8);
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             _ => todo!()
    |
 
@@ -180,7 +180,7 @@ LL | struct NonEmptyStruct1;
    = note: the matched value is of type `NonEmptyStruct1`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyStruct1 => todo!()
    |
 
@@ -198,7 +198,7 @@ LL | struct NonEmptyStruct2(bool);
    = note: the matched value is of type `NonEmptyStruct2`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyStruct2(_) => todo!()
    |
 
@@ -216,7 +216,7 @@ LL | union NonEmptyUnion1 {
    = note: the matched value is of type `NonEmptyUnion1`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyUnion1 { .. } => todo!()
    |
 
@@ -234,7 +234,7 @@ LL | union NonEmptyUnion2 {
    = note: the matched value is of type `NonEmptyUnion2`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyUnion2 { .. } => todo!()
    |
 
@@ -254,7 +254,7 @@ LL |     Foo(bool),
    = note: the matched value is of type `NonEmptyEnum1`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyEnum1::Foo(_) => todo!()
    |
 
@@ -276,7 +276,7 @@ LL |     Bar,
    = note: the matched value is of type `NonEmptyEnum2`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             NonEmptyEnum2::Foo(_) | NonEmptyEnum2::Bar => todo!()
    |
 
@@ -294,7 +294,7 @@ LL | enum NonEmptyEnum5 {
    = note: the matched value is of type `NonEmptyEnum5`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown, or multiple match arms
    |
-LL ~             _ if false => {}
+LL ~             _ if false => {},
 LL +             _ => todo!()
    |
 

tests/ui/pattern/usefulness/floats.stderr

@@ -7,7 +7,7 @@ LL |     match 0.0 {
    = note: the matched value is of type `f64`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~       0.0..=1.0 => {}
+LL ~       0.0..=1.0 => {},
 LL +       _ => todo!()
    |
 

tests/ui/pattern/usefulness/guards.stderr

@@ -7,7 +7,7 @@ LL |     match 0u8 {
    = note: the matched value is of type `u8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         128 ..= 255 if true => {}
+LL ~         128 ..= 255 if true => {},
 LL +         128_u8..=u8::MAX => todo!()
    |
 

tests/ui/pattern/usefulness/integer-ranges/exhaustiveness.stderr

@@ -91,7 +91,7 @@ LL |     match 0i8 {
    = note: the matched value is of type `i8`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         1 ..= i8::MAX => {}
+LL ~         1 ..= i8::MAX => {},
 LL +         0_i8 => todo!()
    |
 
@@ -140,7 +140,7 @@ LL |     match (0u8, true) {
    = note: the matched value is of type `(u8, bool)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         (0 ..= 255, true) => {}
+LL ~         (0 ..= 255, true) => {},
 LL +         (126_u8..=127_u8, false) => todo!()
    |
 

tests/ui/pattern/usefulness/integer-ranges/pointer-sized-int.deny.stderr

@@ -9,7 +9,7 @@ LL |     match 0usize {
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `usize` matching
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         0 ..= usize::MAX => {}
+LL ~         0 ..= usize::MAX => {},
 LL +         _ => todo!()
    |
 
@@ -24,7 +24,7 @@ LL |     match 0isize {
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `isize` matching
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         isize::MIN ..= isize::MAX => {}
+LL ~         isize::MIN ..= isize::MAX => {},
 LL +         _ => todo!()
    |
 
@@ -147,7 +147,7 @@ LL |     match 0isize {
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `isize` matching
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         1 ..= isize::MAX => {}
+LL ~         1 ..= isize::MAX => {},
 LL +         _ => todo!()
    |
 

tests/ui/pattern/usefulness/integer-ranges/precise_pointer_matching-message.stderr

@@ -9,7 +9,7 @@ LL |     match 0usize {
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `usize` matching
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         0..=usize::MAX => {}
+LL ~         0..=usize::MAX => {},
 LL +         _ => todo!()
    |
 
@@ -24,7 +24,7 @@ LL |     match 0isize {
    = help: add `#![feature(precise_pointer_size_matching)]` to the crate attributes to enable precise `isize` matching
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         isize::MIN..=isize::MAX => {}
+LL ~         isize::MIN..=isize::MAX => {},
 LL +         _ => todo!()
    |
 

tests/ui/pattern/usefulness/issue-2111.stderr

@@ -7,7 +7,7 @@ LL |     match (a, b) {
    = note: the matched value is of type `(Option<usize>, Option<usize>)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         (Some(_), None) | (None, Some(_)) => {}
+LL ~         (Some(_), None) | (None, Some(_)) => {},
 LL +         (None, None) | (Some(_), Some(_)) => todo!()
    |
 

tests/ui/pattern/usefulness/issue-30240.stderr

@@ -7,7 +7,7 @@ LL |     match "world" {
    = note: the matched value is of type `&str`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         "hello" => {}
+LL ~         "hello" => {},
 LL +         &_ => todo!()
    |
 
@@ -20,7 +20,7 @@ LL |     match "world" {
    = note: the matched value is of type `&str`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         "hello" => {}
+LL ~         "hello" => {},
 LL +         &_ => todo!()
    |
 

tests/ui/pattern/usefulness/issue-35609.stderr

@@ -7,7 +7,7 @@ LL |     match (A, ()) {
    = note: the matched value is of type `(Enum, ())`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown, or multiple match arms
    |
-LL ~         (A, _) => {}
+LL ~         (A, _) => {},
 LL +         _ => todo!()
    |
 
@@ -20,7 +20,7 @@ LL |     match (A, A) {
    = note: the matched value is of type `(Enum, Enum)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown, or multiple match arms
    |
-LL ~         (_, A) => {}
+LL ~         (_, A) => {},
 LL +         _ => todo!()
    |
 
@@ -33,7 +33,7 @@ LL |     match ((A, ()), ()) {
    = note: the matched value is of type `((Enum, ()), ())`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown, or multiple match arms
    |
-LL ~         ((A, ()), _) => {}
+LL ~         ((A, ()), _) => {},
 LL +         _ => todo!()
    |
 
@@ -46,7 +46,7 @@ LL |     match ((A, ()), A) {
    = note: the matched value is of type `((Enum, ()), Enum)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown, or multiple match arms
    |
-LL ~         ((A, ()), _) => {}
+LL ~         ((A, ()), _) => {},
 LL +         _ => todo!()
    |
 
@@ -59,7 +59,7 @@ LL |     match ((A, ()), ()) {
    = note: the matched value is of type `((Enum, ()), ())`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown, or multiple match arms
    |
-LL ~         ((A, _), _) => {}
+LL ~         ((A, _), _) => {},
 LL +         _ => todo!()
    |
 
@@ -77,7 +77,7 @@ LL | struct S(Enum, ());
    = note: the matched value is of type `S`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown, or multiple match arms
    |
-LL ~         S(A, _) => {}
+LL ~         S(A, _) => {},
 LL +         _ => todo!()
    |
 
@@ -95,7 +95,7 @@ LL | struct Sd { x: Enum, y: () }
    = note: the matched value is of type `Sd`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown, or multiple match arms
    |
-LL ~         Sd { x: A, y: _ } => {}
+LL ~         Sd { x: A, y: _ } => {},
 LL +         _ => todo!()
    |
 

tests/ui/pattern/usefulness/issue-3601.stderr

@@ -9,7 +9,7 @@ note: `Box<ElementKind>` defined here
    = note: the matched value is of type `Box<ElementKind>`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~             box ElementKind::HTMLImageElement(ref d) if d.image.is_some() => { true }
+LL ~             box ElementKind::HTMLImageElement(ref d) if d.image.is_some() => { true },
 LL +             box _ => todo!()
    |
 

tests/ui/pattern/usefulness/issue-50900.stderr

@@ -12,7 +12,7 @@ LL | pub struct Tag(pub Context, pub u16);
    = note: the matched value is of type `Tag`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         Tag::ExifIFDPointer => {}
+LL ~         Tag::ExifIFDPointer => {},
 LL +         Tag(Context::Exif, _) => todo!()
    |
 

tests/ui/pattern/usefulness/issue-56379.stderr

@@ -18,7 +18,7 @@ LL |     C(bool),
    = note: the matched value is of type `Foo`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         Foo::C(true) => {}
+LL ~         Foo::C(true) => {},
 LL +         Foo::A(false) | Foo::B(false) | Foo::C(false) => todo!()
    |
 

tests/ui/pattern/usefulness/match-byte-array-patterns-2.stderr

@@ -7,7 +7,7 @@ LL |     match buf {
    = note: the matched value is of type `&[u8; 4]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         b"AAAA" => {}
+LL ~         b"AAAA" => {},
 LL +         &[0_u8..=64_u8, _, _, _] | &[66_u8..=u8::MAX, _, _, _] => todo!()
    |
 
@@ -20,7 +20,7 @@ LL |     match buf {
    = note: the matched value is of type `&[u8]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown, or multiple match arms
    |
-LL ~         b"AAAA" => {}
+LL ~         b"AAAA" => {},
 LL +         _ => todo!()
    |
 

tests/ui/pattern/usefulness/match-privately-empty.stderr

@@ -12,7 +12,7 @@ note: `Option<Private>` defined here
    = note: the matched value is of type `Option<Private>`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         }) => {}
+LL ~         }) => {},
 LL +         Some(Private { misc: true, .. }) => todo!()
    |
 

tests/ui/pattern/usefulness/match-slice-patterns.stderr

@@ -7,7 +7,7 @@ LL |     match list {
    = note: the matched value is of type `&[Option<()>]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         &[.., Some(_), _] => {}
+LL ~         &[.., Some(_), _] => {},
 LL ~         &[_, Some(_), .., None, _] => todo!(),
    |
 

tests/ui/pattern/usefulness/non-exhaustive-defined-here.stderr

@@ -18,7 +18,7 @@ LL |     C
    = note: the matched value is of type `E`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         E::A => {}
+LL ~         E::A => {},
 LL +         E::B | E::C => todo!()
    |
 
@@ -44,8 +44,8 @@ LL |     C
    = note: the matched value is of type `E`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL |     if let E::A = e { todo!() }
-   |     ++              ~~~~~~~~~~~
+LL |     if let E::A = e { todo!() };
+   |     ++              +++++++++++
 
 error[E0004]: non-exhaustive patterns: `&E::B` and `&E::C` not covered
   --> $DIR/non-exhaustive-defined-here.rs:50:11
@@ -67,7 +67,7 @@ LL |     C
    = note: the matched value is of type `&E`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         E::A => {}
+LL ~         E::A => {},
 LL +         &E::B | &E::C => todo!()
    |
 
@@ -93,8 +93,8 @@ LL |     C
    = note: the matched value is of type `&E`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL |     if let E::A = e { todo!() }
-   |     ++              ~~~~~~~~~~~
+LL |     if let E::A = e { todo!() };
+   |     ++              +++++++++++
 
 error[E0004]: non-exhaustive patterns: `&&mut &E::B` and `&&mut &E::C` not covered
   --> $DIR/non-exhaustive-defined-here.rs:66:11
@@ -116,7 +116,7 @@ LL |     C
    = note: the matched value is of type `&&mut &E`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         E::A => {}
+LL ~         E::A => {},
 LL +         &&mut &E::B | &&mut &E::C => todo!()
    |
 
@@ -142,8 +142,8 @@ LL |     C
    = note: the matched value is of type `&&mut &E`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL |     if let E::A = e { todo!() }
-   |     ++              ~~~~~~~~~~~
+LL |     if let E::A = e { todo!() };
+   |     ++              +++++++++++
 
 error[E0004]: non-exhaustive patterns: `Opt::None` not covered
   --> $DIR/non-exhaustive-defined-here.rs:92:11
@@ -162,7 +162,7 @@ LL |     None,
    = note: the matched value is of type `Opt`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         Opt::Some(ref _x) => {}
+LL ~         Opt::Some(ref _x) => {},
 LL +         Opt::None => todo!()
    |
 

tests/ui/pattern/usefulness/non-exhaustive-match-nested.stderr

@@ -25,7 +25,7 @@ LL | enum T { A(U), B }
    = note: the matched value is of type `T`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         T::B => { panic!("goodbye"); }
+LL ~         T::B => { panic!("goodbye"); },
 LL +         T::A(U::C) => todo!()
    |
 

tests/ui/pattern/usefulness/non-exhaustive-match.stderr

@@ -24,7 +24,7 @@ LL |     match true {
    = note: the matched value is of type `bool`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~       true => {}
+LL ~       true => {},
 LL +       false => todo!()
    |
 
@@ -42,7 +42,7 @@ note: `Option<i32>` defined here
    = note: the matched value is of type `Option<i32>`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~       None => {}
+LL ~       None => {},
 LL +       Some(_) => todo!()
    |
 
@@ -55,7 +55,7 @@ LL |     match (2, 3, 4) {
    = note: the matched value is of type `(i32, i32, i32)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~       (_, _, 4) => {}
+LL ~       (_, _, 4) => {},
 LL +       (_, _, i32::MIN..=3_i32) | (_, _, 5_i32..=i32::MAX) => todo!()
    |
 
@@ -68,7 +68,7 @@ LL |     match (T::A, T::A) {
    = note: the matched value is of type `(T, T)`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~       (T::B, T::A) => {}
+LL ~       (T::B, T::A) => {},
 LL +       (T::A, T::A) | (T::B, T::B) => todo!()
    |
 
@@ -86,7 +86,7 @@ LL | enum T { A, B }
    = note: the matched value is of type `T`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~       T::A => {}
+LL ~       T::A => {},
 LL +       T::B => todo!()
    |
 
@@ -99,7 +99,7 @@ LL |     match *vec {
    = note: the matched value is of type `[Option<isize>]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [None] => {}
+LL ~         [None] => {},
 LL +         [] => todo!()
    |
 

tests/ui/pattern/usefulness/refutable-pattern-errors.stderr

@@ -17,8 +17,8 @@ LL |     let (1, (Some(1), 2..=3)) = (1, (None, 2));
    = note: the matched value is of type `(i32, (Option<i32>, i32))`
 help: you might want to use `if let` to ignore the variants that aren't matched
    |
-LL |     if let (1, (Some(1), 2..=3)) = (1, (None, 2)) { todo!() }
-   |     ++                                            ~~~~~~~~~~~
+LL |     if let (1, (Some(1), 2..=3)) = (1, (None, 2)) { todo!() };
+   |     ++                                            +++++++++++
 
 error: aborting due to 2 previous errors
 

tests/ui/pattern/usefulness/slice-patterns-exhaustiveness.stderr

@@ -7,7 +7,7 @@ LL |     match s2 {
    = note: the matched value is of type `&[bool; 2]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [true, .., true] => {}
+LL ~         [true, .., true] => {},
 LL +         &[false, _] => todo!()
    |
 
@@ -20,7 +20,7 @@ LL |     match s3 {
    = note: the matched value is of type `&[bool; 3]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [true, .., true] => {}
+LL ~         [true, .., true] => {},
 LL +         &[false, ..] => todo!()
    |
 
@@ -33,7 +33,7 @@ LL |     match s10 {
    = note: the matched value is of type `&[bool; 10]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [true, .., true] => {}
+LL ~         [true, .., true] => {},
 LL +         &[false, ..] => todo!()
    |
 
@@ -46,7 +46,7 @@ LL |     match s2 {
    = note: the matched value is of type `&[bool; 2]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [.., false] => {}
+LL ~         [.., false] => {},
 LL +         &[false, true] => todo!()
    |
 
@@ -59,7 +59,7 @@ LL |     match s3 {
    = note: the matched value is of type `&[bool; 3]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [.., false] => {}
+LL ~         [.., false] => {},
 LL +         &[false, .., true] => todo!()
    |
 
@@ -72,7 +72,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [.., false] => {}
+LL ~         [.., false] => {},
 LL +         &[false, .., true] => todo!()
    |
 
@@ -85,7 +85,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [] => {}
+LL ~         [] => {},
 LL +         &[_, ..] => todo!()
    |
 
@@ -98,7 +98,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [_] => {}
+LL ~         [_] => {},
 LL +         &[_, _, ..] => todo!()
    |
 
@@ -111,7 +111,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [true, ..] => {}
+LL ~         [true, ..] => {},
 LL +         &[false, ..] => todo!()
    |
 
@@ -124,7 +124,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [true, ..] => {}
+LL ~         [true, ..] => {},
 LL +         &[false, _, ..] => todo!()
    |
 
@@ -137,7 +137,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [.., true] => {}
+LL ~         [.., true] => {},
 LL +         &[_, .., false] => todo!()
    |
 
@@ -150,7 +150,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [.., false] => {}
+LL ~         [.., false] => {},
 LL +         &[_, _, .., true] => todo!()
    |
 
@@ -163,7 +163,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [false, .., false] => {}
+LL ~         [false, .., false] => {},
 LL +         &[true, _, .., _] => todo!()
    |
 
@@ -176,7 +176,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         &[true] => {}
+LL ~         &[true] => {},
 LL +         &[] | &[_, _, ..] => todo!()
    |
 
@@ -189,7 +189,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         CONST => {}
+LL ~         CONST => {},
 LL +         &[] | &[_, _, ..] => todo!()
    |
 
@@ -202,7 +202,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         &[false] => {}
+LL ~         &[false] => {},
 LL +         &[] | &[_, _, ..] => todo!()
    |
 
@@ -215,7 +215,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         CONST => {}
+LL ~         CONST => {},
 LL +         &[] | &[_, _, ..] => todo!()
    |
 
@@ -228,7 +228,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         CONST => {}
+LL ~         CONST => {},
 LL +         &[_, _, ..] => todo!()
    |
 
@@ -241,7 +241,7 @@ LL |     match s {
    = note: the matched value is of type `&[bool]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         &[_, _, ..] => {}
+LL ~         &[_, _, ..] => {},
 LL +         &[false] => todo!()
    |
 
@@ -254,7 +254,7 @@ LL |     match s1 {
    = note: the matched value is of type `&[bool; 1]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         CONST1 => {}
+LL ~         CONST1 => {},
 LL +         &[false] => todo!()
    |
 

tests/ui/pattern/usefulness/stable-gated-patterns.stderr

@@ -15,7 +15,7 @@ LL |     Stable2,
    = note: the matched value is of type `UnstableEnum`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
    |
-LL ~         UnstableEnum::Stable => {}
+LL ~         UnstableEnum::Stable => {},
 LL +         UnstableEnum::Stable2 | _ => todo!()
    |
 
@@ -33,7 +33,7 @@ LL | pub enum UnstableEnum {
    = note: the matched value is of type `UnstableEnum`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         UnstableEnum::Stable2 => {}
+LL ~         UnstableEnum::Stable2 => {},
 LL +         _ => todo!()
    |
 

tests/ui/pattern/usefulness/struct-like-enum-nonexhaustive.stderr

@@ -14,7 +14,7 @@ LL |     B { x: Option<isize> },
    = note: the matched value is of type `A`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         A::B { x: None } => {}
+LL ~         A::B { x: None } => {},
 LL +         A::B { x: Some(_) } => todo!()
    |
 

tests/ui/pattern/usefulness/unstable-gated-patterns.stderr

@@ -15,7 +15,7 @@ LL |     Unstable,
    = note: the matched value is of type `UnstableEnum`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         UnstableEnum::Stable2 => {}
+LL ~         UnstableEnum::Stable2 => {},
 LL +         UnstableEnum::Unstable => todo!()
    |
 

tests/ui/range/range-pattern-out-of-bounds-issue-68972.rs

@@ -4,10 +4,8 @@ fn main() {
     match 0u8 {
         251..257 => {}
         //~^ ERROR literal out of range
-        //~| ERROR literal out of range
         251..=256 => {}
         //~^ ERROR literal out of range
-        //~| ERROR literal out of range
         _ => {}
     }
 }

tests/ui/range/range-pattern-out-of-bounds-issue-68972.stderr

@@ -5,22 +5,10 @@ LL |         251..257 => {}
    |              ^^^ this value doesn't fit in `u8` whose maximum value is `255`
 
 error: literal out of range for `u8`
-  --> $DIR/range-pattern-out-of-bounds-issue-68972.rs:8:15
+  --> $DIR/range-pattern-out-of-bounds-issue-68972.rs:7:15
    |
 LL |         251..=256 => {}
    |               ^^^ this value doesn't fit in `u8` whose maximum value is `255`
 
-error: literal out of range for `u8`
-  --> $DIR/range-pattern-out-of-bounds-issue-68972.rs:5:14
-   |
-LL |         251..257 => {}
-   |              ^^^ this value doesn't fit in `u8` whose maximum value is `255`
-
-error: literal out of range for `u8`
-  --> $DIR/range-pattern-out-of-bounds-issue-68972.rs:8:15
-   |
-LL |         251..=256 => {}
-   |               ^^^ this value doesn't fit in `u8` whose maximum value is `255`
-
-error: aborting due to 4 previous errors
+error: aborting due to 2 previous errors
 

tests/ui/rfc-2005-default-binding-mode/slice.stderr

@@ -7,7 +7,7 @@ LL |     match sl {
    = note: the matched value is of type `&[u8]`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
-LL ~         [first, remainder @ ..] => {}
+LL ~         [first, remainder @ ..] => {},
 LL ~         &[] => todo!(),
    |
 

tests/ui/suggestions/const-pat-non-exaustive-let-new-var.rs

@@ -2,10 +2,7 @@ fn main() {
     let A = 3;
     //~^ ERROR refutable pattern in local binding
     //~| patterns `i32::MIN..=1_i32` and `3_i32..=i32::MAX` not covered
-    //~| missing patterns are not covered because `a` is interpreted as a constant pattern, not a new variable
-    //~| HELP introduce a variable instead
-    //~| SUGGESTION a_var
+    //~| HELP you might want to use `if let` to ignore the variants that aren't matched
 
     const A: i32 = 2;
-    //~^ constant defined here
 }

tests/ui/suggestions/const-pat-non-exaustive-let-new-var.stderr

@@ -2,16 +2,15 @@ error[E0005]: refutable pattern in local binding
   --> $DIR/const-pat-non-exaustive-let-new-var.rs:2:9
    |
 LL |     let A = 3;
-   |         ^
-   |         |
-   |         patterns `i32::MIN..=1_i32` and `3_i32..=i32::MAX` not covered
-   |         missing patterns are not covered because `a` is interpreted as a constant pattern, not a new variable
-   |         help: introduce a variable instead: `a_var`
-...
-LL |     const A: i32 = 2;
-   |     ------------ constant defined here
+   |         ^ patterns `i32::MIN..=1_i32` and `3_i32..=i32::MAX` not covered
    |
+   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
+   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
    = note: the matched value is of type `i32`
+help: you might want to use `if let` to ignore the variants that aren't matched
+   |
+LL |     if let A = 3 { todo!() };
+   |     ++           +++++++++++
 
 error: aborting due to previous error