{"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"Err(IndexOutOfBounds)"}]}
            Err(IndexOutOfBounds) => {
            Err(OverlappingIndices) => panic!("Indices {ai:?} and {bi:?} are not disjoint!"),
                panic!("Some indices among ({ai:?}, {bi:?}) are out of bounds")