{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"CoverageKind::SpanMarker"}]}
            CoverageKind::SpanMarker | CoverageKind::BlockMarker { .. } => unreachable!(
        match *kind {
                "marker statement {kind:?} should have been removed by CleanupPostBorrowck"