remove error code from `#[rustc_variance]` and document its remains

1 files changed, 2 insertions, 3 deletions

diff --git a/compiler/rustc_hir_analysis/src/variance/test.rs b/compiler/rustc_hir_analysis/src/variance/test.rs
index 83ed3e44b3d..5feeb92d337 100644
--- a/compiler/rustc_hir_analysis/src/variance/test.rs
+++ b/compiler/rustc_hir_analysis/src/variance/test.rs
@@ -1,4 +1,3 @@
-use rustc_errors::struct_span_err;
 use rustc_middle::ty::TyCtxt;
 use rustc_span::symbol::sym;
 
@@ -8,8 +7,8 @@ pub fn test_variance(tcx: TyCtxt<'_>) {
     for id in tcx.hir().items() {
         if tcx.has_attr(id.owner_id.to_def_id(), sym::rustc_variance) {
             let variances_of = tcx.variances_of(id.owner_id);
-            struct_span_err!(tcx.sess, tcx.def_span(id.owner_id), E0208, "{:?}", variances_of)
-                .emit();
+
+            tcx.sess.struct_span_err(tcx.def_span(id.owner_id), format!("{variances_of:?}")).emit();
         }
     }
 }