Auto merge of #119237 - compiler-errors:rollup-umyyu7d, r=compiler-errors

Rollup of 6 pull requests

Successful merges:

 - #119012 (Extract `layout_of_{struct,enum}` fn)
 - #119077 (Separate MIR lints from validation)
 - #119171 (Cleanup error handlers: round 4)
 - #119198 (Split coroutine desugaring kind from source)
 - #119222 (Add `IntoAsyncIterator`)
 - #119230 (Exhaustiveness: clean up after librarification)

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

1 files changed, 4 insertions, 12 deletions

diff --git a/compiler/rustc_parse/src/errors.rs b/compiler/rustc_parse/src/errors.rs
index 8ccfcb625a6..53cce9e2883 100644
--- a/compiler/rustc_parse/src/errors.rs
+++ b/compiler/rustc_parse/src/errors.rs
@@ -3,8 +3,8 @@ use std::borrow::Cow;
 use rustc_ast::token::Token;
 use rustc_ast::{Path, Visibility};
 use rustc_errors::{
-    AddToDiagnostic, Applicability, DiagCtxt, DiagnosticBuilder, ErrorGuaranteed, IntoDiagnostic,
-    Level, SubdiagnosticMessage,
+    AddToDiagnostic, Applicability, DiagCtxt, DiagnosticBuilder, IntoDiagnostic, Level,
+    SubdiagnosticMessage,
 };
 use rustc_macros::{Diagnostic, Subdiagnostic};
 use rustc_session::errors::ExprParenthesesNeeded;
@@ -1043,11 +1043,7 @@ pub(crate) struct ExpectedIdentifier {
 
 impl<'a> IntoDiagnostic<'a> for ExpectedIdentifier {
     #[track_caller]
-    fn into_diagnostic(
-        self,
-        dcx: &'a DiagCtxt,
-        level: Level,
-    ) -> DiagnosticBuilder<'a, ErrorGuaranteed> {
+    fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> DiagnosticBuilder<'a> {
         let token_descr = TokenDescription::from_token(&self.token);
 
         let mut diag = DiagnosticBuilder::new(
@@ -1107,11 +1103,7 @@ pub(crate) struct ExpectedSemi {
 
 impl<'a> IntoDiagnostic<'a> for ExpectedSemi {
     #[track_caller]
-    fn into_diagnostic(
-        self,
-        dcx: &'a DiagCtxt,
-        level: Level,
-    ) -> DiagnosticBuilder<'a, ErrorGuaranteed> {
+    fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> DiagnosticBuilder<'a> {
         let token_descr = TokenDescription::from_token(&self.token);
 
         let mut diag = DiagnosticBuilder::new(