{"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"for"}]}
        for id in crate_items.opaques() {
    if tcx.has_attr(CRATE_DEF_ID, sym::rustc_variance_of_opaques) {
            tcx.dcx().emit_err(crate::errors::VariancesOf {