1 files changed, 1 insertions, 6 deletions
diff --git a/compiler/rustc_monomorphize/src/errors.rs b/compiler/rustc_monomorphize/src/errors.rs
index ce097b8d846..f1ca72de8db 100644
--- a/compiler/rustc_monomorphize/src/errors.rs
+++ b/compiler/rustc_monomorphize/src/errors.rs
@@ -32,12 +32,6 @@ pub struct TypeLengthLimit {
     pub type_length: usize,
 }
 
-#[derive(Diagnostic)]
-#[diag(monomorphize_requires_lang_item)]
-pub struct RequiresLangItem {
-    pub lang_item: String,
-}
-
 pub struct UnusedGenericParams {
     pub span: Span,
     pub param_spans: Vec<Span>,
@@ -45,6 +39,7 @@ pub struct UnusedGenericParams {
 }
 
 impl IntoDiagnostic<'_> for UnusedGenericParams {
+    #[track_caller]
     fn into_diagnostic(
         self,
         handler: &'_ rustc_errors::Handler,