add suggestion for wrongly ordered format parameters

compiler/rustc_builtin_macros/src/errors.rs

@@ -618,6 +618,17 @@ pub(crate) enum InvalidFormatStringSuggestion {
         #[primary_span]
         span: Span,
     },
+    #[suggestion(
+        builtin_macros_format_reorder_format_parameter,
+        code = "{replacement}",
+        style = "verbose",
+        applicability = "machine-applicable"
+    )]
+    ReorderFormatParameter {
+        #[primary_span]
+        span: Span,
+        replacement: String,
+    },
 }
 
 #[derive(Diagnostic)]

compiler/rustc_builtin_macros/src/format.rs

@@ -316,6 +316,13 @@ fn make_format_args(
                     e.sugg_ = Some(errors::InvalidFormatStringSuggestion::RemoveRawIdent { span })
                 }
             }
+            parse::Suggestion::ReorderFormatParameter(span, replacement) => {
+                let span = fmt_span.from_inner(InnerSpan::new(span.start, span.end));
+                e.sugg_ = Some(errors::InvalidFormatStringSuggestion::ReorderFormatParameter {
+                    span,
+                    replacement,
+                });
+            }
         }
         let guar = ecx.dcx().emit_err(e);
         return ExpandResult::Ready(Err(guar));