{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"diag.sub(Note,"}]}
        diag.sub(Note, msg, diag.span.primary_span().unwrap_or(DUMMY_SP).into());
        let msg = dcx.eagerly_translate_for_subdiag(&diag, msg); // after the `arg` calls
        diag