Rename it accordingly.
{
        std::lock_guard lock(mutex);
        std::cerr << "\n";
        for (size_t i = 0; i < infos.size(); ++i)
        {
            const auto & info = infos[i];
            
            if (0 == info->queries)
                return;
            double seconds = info->work_time / concurrency;
            std::string connection_description = connections[i]->getDescription();
            if (round_robin)
            {
                connection_description.clear();
                for (const auto & conn : connections)
                {
                    if (!connection_description.empty())
                        connection_description += ", ";
                    connection_description += conn->getDescription();
                }
            }
            std::cerr
                    << connection_description << ", "
                    << "queries " << info->queries << ", ";
            if (info->errors)
            {
                std::cerr << "errors " << info->errors << ", ";
            }
            std::cerr
                    << "QPS: " << (info->queries / seconds) << ", "