{"ast_node_type":"variable","tokens":[{"end":46,"kind":"keyword","start":0,"text":"let"}]}
    let body = tcx.instance_mir(instance.def);
fn check_mono_item<'tcx>(tcx: TyCtxt<'tcx>, instance: Instance<'tcx>) {
    abi_check::check_feature_dependent_abi(tcx, instance, body);