how to catch errors in POE::Component::IKC::Server ?

What construction do I use to catch errors from a POE::Component::IKC::Server->spawn() call?

Suppose, for instance, that I am trying to build a reliable server that will deal sensibly with various forms of network failure.  So suppose, for instance, that the spawn fails because it cannot resolve a host address, or because the port is already in use.  How do I arrange the code so it can detect such failures?  I see no documented mechanism for such error handling.