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
{
    Strings res;
    check(tryGetChildren(path, res, stat, watch), path);
    return res;
}
Strings ZooKeeper::getChildrenWatch(const std::string & path, Coordination::Stat * stat, Coordination::WatchCallback watch_callback)
{
    Strings res;
    check(tryGetChildrenWatch(path, res, stat, watch_callback), path);
    return res;
}
Coordination::Error ZooKeeper::tryGetChildren(
    const std::string & path,
    Strings & res,
    Coordination::Stat * stat,
    const EventPtr & watch,
    Coordination::ListRequestType list_request_type)
{
    Coordination::Error code = getChildrenImpl(path, res, stat, callbackForEvent(watch), list_request_type);
    if (!(code == Coordination::Error::ZOK || code == Coordination::Error::ZNONODE))
        throw KeeperException(code, path);
    return code;
}
Coordination::Error ZooKeeper::tryGetChildrenWatch(