https://s3.amazonaws.com/clickhouse-test-reports/0/10dc83b7a9c18228c4a4fc0dcfe6b18d2427462e/stress_test__debug__actions_.html

I found weird exception while investigating why ephemeral nodes were not removed for a long time:
https://pastila.nl/?00ec9776/d8858e442f8453f9b9e31a2f1da3cc8b
host_string.erase(0, strlen("secure://"));
                LOG_TEST(log, "Adding ZooKeeper host {} ({})", host_string, Poco::Net::SocketAddress{host_string}.toString());
                nodes.emplace_back(Coordination::ZooKeeper::Node{Poco::Net::SocketAddress{host_string}, secure});
            }
            catch (const Poco::Net::HostNotFoundException & e)
            {
                
                LOG_ERROR(log, "Cannot use ZooKeeper host {}, reason: {}", host_string, e.displayText());
            }
            catch (const Poco::Net::DNSException & e)
            {
                
                dns_error = true;
                LOG_ERROR(log, "Cannot use ZooKeeper host {} due to DNS error: {}", host_string, e.displayText());
            }
        }
        if (nodes.empty())
        {
            
            if (dns_error)
                throw KeeperException("Cannot resolve any of provided ZooKeeper hosts due to DNS error", Coordination::Error::ZCONNECTIONLOSS);
            else
                throw KeeperException("Cannot use any of provided ZooKeeper nodes", Coordination::Error::ZBADARGUMENTS);
        }
        impl = std::make_unique<Coordination::ZooKeeper>(
                nodes,
                chroot,
                identity_.empty() ? "" : "digest",
                identity_,
                Poco::Timespan(0, session_timeout_ms_ * 1000),