{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"tcx.dcx().emit_err(errors::MainFunctionReturnTypeGeneric"}]}
            tcx.dcx().emit_err(errors::MainFunctionReturnTypeGeneric { span: return_ty_span });
        let Some(return_ty) = return_ty.no_bound_vars() else {
            return;