Error running distributed mode on Fedora and CentOS

[jvanz]

I was trying to run locust in distributed mode using two machines. The master is a Fedora and the slave is a CentOS. The slave is able to connect to the master and in the web UI I can see that I have a slave. But when I try to run my test the following error is thrown :

https://gist.github.com/jvanz/81f167a5689abe3730f4

As @heyman has asked to me, I did the same test in Ubuntu. To do that I created a linux container with Ubuntu image and tested again. If the master runs in a Ubuntu machine the problems does not occurs.

Master:

• Fedora release 20 (Heisenbug)
• Python 2.7.5
• pyzmq 14.5.0

Slave:

• CentOS Linux release 7.0.1406
• Python 2.7.5
• pyzmq 14.5.0