add error message for unused duplicate

jdonszelmann · jdonszelmann · commit bcd5a3324068 · 2025-06-11T00:23:06.000+02:00
diff --git a/compiler/rustc_attr_parsing/messages.ftl b/compiler/rustc_attr_parsing/messages.ftl
@@ -135,9 +135,7 @@ attr_parsing_unused_duplicate =
     unused attribute
     .suggestion = remove this attribute
     .note = attribute also specified here
-    .warn = {-attr_parsing_previously_accepted}
-
-
+    .warn = {-passes_previously_accepted}
 attr_parsing_unused_multiple =
     multiple `{$name}` attributes
     .suggestion = remove this attribute
diff --git a/compiler/rustc_attr_parsing/src/session_diagnostics.rs b/compiler/rustc_attr_parsing/src/session_diagnostics.rs
@@ -452,7 +452,7 @@ pub(crate) struct UnusedMultiple {
 }
 
 #[derive(LintDiagnostic)]
-#[diag(attr_parsing_unused_multiple)]
+#[diag(attr_parsing_unused_duplicate)]
 pub(crate) struct UnusedDuplicate {
     #[suggestion(code = "", applicability = "machine-applicable")]
     pub this: Span,

Original file line number	Diff line number	Diff line change
`@@ -452,7 +452,7 @@ pub(crate) struct UnusedMultiple {`
`452`	`452`	`}`
`453`	`453`
`454`	`454`	`#[derive(LintDiagnostic)]`
`455`		`-#[diag(attr_parsing_unused_multiple)]`
	`455`	`+#[diag(attr_parsing_unused_duplicate)]`
`456`	`456`	`pub(crate) struct UnusedDuplicate {`
`457`	`457`	`#[suggestion(code = "", applicability = "machine-applicable")]`
`458`	`458`	`pub this: Span,`