0mq reactor fails sporadically on startup

[josephglanville]

There seems to be some sort of race condition that makes starting the example distributed hash application fail some of the time.

E, [2013-09-29T19:03:45.233573 #11846] ERROR -- : reactor crashed
Celluloid::ZMQ::DeadWakerError: error sending 0MQ message: Context was terminated
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-zmq-0.15.0/lib/celluloid/zmq/waker.rb:27:in `block in signal'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-zmq-0.15.0/lib/celluloid/zmq/waker.rb:25:in `synchronize'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-zmq-0.15.0/lib/celluloid/zmq/waker.rb:25:in `signal'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid/evented_mailbox.rb:29:in `<<'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid/proxies/sync_proxy.rb:32:in `method_missing'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid/proxies/actor_proxy.rb:20:in `_send_'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid.rb:185:in `new'
    /Users/jpg/src/floss/lib/floss/node.rb:74:in `run'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid/calls.rb:25:in `public_send'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid/calls.rb:25:in `dispatch'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid/calls.rb:122:in `dispatch'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid/actor.rb:322:in `block in handle_message'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid/actor.rb:416:in `block in task'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid/tasks.rb:55:in `block in initialize'
    /Users/jpg/.rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.1/lib/celluloid/tasks/task_fiber.rb:13:in `block in create'
E, [2013-09-29T19:03:45.234468 #11846] ERROR -- : reactor crashed