https://clickhouse-test-reports.s3.yandex.net/19475/02d28c1f9b9558ca5af267167a542819b9e1d061/fuzzer_debug/report.html#fail1
{
    size_t num_rows = 0;
    { 
        BlockInputStreams inputs;
        inputs.reserve(blocks.size());
        for (auto & block : blocks)