https://clickhouse-test-reports.s3.yandex.net/17375/99073c26ee2692f8efe2ab14b2d8ae0fd813b80e/fuzzer/fuzzer.log

```
SELECT
    k,
    topK(v)
FROM 
(
    SELECT
        number % 7 AS k,
        arrayMap(x -> arrayMap(x -> if(x = 0, NULL, toString(x)), range(x)), range(intDiv(number, 1))) AS v
    FROM system.numbers
    LIMIT 257
)
GROUP BY k
ORDER BY k ASC
```
{
        using Cont = HashSet<int, DefaultHash<int>, HashTableGrower<1>>;
        Cont cont;
        cont.insert(1);
        cont.insert(2);
        Cont::LookupResult it;
        bool inserted;
        int key = 3;
        cont.emplace(key, it, inserted);
        std::cerr << inserted << ", " << key << std::endl;
        cont.emplace(key, it, inserted);
        std::cerr << inserted << ", " << key << std::endl;
        for (auto x : cont)
            std::cerr << x.getValue() << std::endl;
        DB::WriteBufferFromOwnString wb;
        cont.writeText(wb);
        std::cerr << "dump: " << wb.str() << std::endl;
    }
    {
        using Cont = HashSet<
            DB::UInt128,
            DB::UInt128TrivialHash>;
        Cont cont;
        DB::WriteBufferFromOwnString wb;
        cont.write(wb);
        std::cerr << "dump: " << wb.str() << std::endl;
    }
    return 0;
}