Node.js Participation library has issues processing multiple (~5+) connections at once.

[barberdt]

In the process of developing stress tests for the BUGswarm platform, I discovered that when trying to create 5 or more connections to the same swarm essentially simultaneously using the participation library, I receive the following exception:

https://gist.github.com/44746ce80692d7c9f78e

The code I am using to test is below:
https://gist.github.com/b8dd9ab032fec3a7b876

Note that any less than 5 connections does not produce the exception.