if let Some(original_def_id) = items.name_to_id.insert(name, item_def_id) {
if original_def_id != item_def_id {
let mut err = match tcx.hir().span_if_local(item_def_id) {
- Some(span) => tcx.sess.struct_span_err(
- span,
- &format!("duplicate diagnostic item found: `{}`.", name),
- ),
+ Some(span) => tcx
+ .sess
+ .struct_span_err(span, &format!("duplicate diagnostic item found: `{name}`.")),
None => tcx.sess.struct_err(&format!(
"duplicate diagnostic item in crate `{}`: `{}`.",
tcx.crate_name(item_def_id.krate),