chimp: EventEmitter memory leak detected on OSX El Captain

Recently switched to a mac, getting the following error when attempting to run chimp, with both chrome and firefox:

Joshs-MacBook-Pro:desireMap josh$ java -version
java version "1.8.0_66"
Java(TM) SE Runtime Environment (build 1.8.0_66-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.66-b17, mixed mode)
Joshs-MacBook-Pro:desireMap josh$ cd tests/cucumber/
Joshs-MacBook-Pro:cucumber josh$ chimp --ddp=http://localhost:3000
[chimp] Running...
(node) warning: possible EventEmitter memory leak detected. 11 connected listeners added. Use emitter.setMaxListeners() to increase limit.
Trace
  at [object Object].addListener (events.js:239:17)
  at [object Object].once (events.js:265:8)
  at /usr/local/lib/node_modules/chimp/node_modules/xolvio-ddp/lib/ddp-client.js:335:10
  at tryCatcher (/usr/local/lib/node_modules/chimp/node_modules/bluebird/js/main/util.js:26:23)
  at Promise._resolveFromResolver (/usr/local/lib/node_modules/chimp/node_modules/bluebird/js/main/promise.js:480:31)
  at new Promise (/usr/local/lib/node_modules/chimp/node_modules/bluebird/js/main/promise.js:70:37)
  at [object Object].DDPClient.connect (/usr/local/lib/node_modules/chimp/node_modules/xolvio-ddp/lib/ddp-client.js:309:10)
  at [object Object]._onTimeout (/usr/local/lib/node_modules/chimp/node_modules/xolvio-ddp/lib/ddp-client.js:114:58)
  at Timer.listOnTimeout (timers.js:92:15)

(node) warning: possible EventEmitter memory leak detected. 11 failed listeners added. Use emitter.setMaxListeners() to increase limit.
Trace
  at [object Object].addListener (events.js:239:17)
  at [object Object].once (events.js:265:8)
  at /usr/local/lib/node_modules/chimp/node_modules/xolvio-ddp/lib/ddp-client.js:336:10
  at tryCatcher (/usr/local/lib/node_modules/chimp/node_modules/bluebird/js/main/util.js:26:23)
  at Promise._resolveFromResolver (/usr/local/lib/node_modules/chimp/node_modules/bluebird/js/main/promise.js:480:31)
  at new Promise (/usr/local/lib/node_modules/chimp/node_modules/bluebird/js/main/promise.js:70:37)
  at [object Object].DDPClient.connect (/usr/local/lib/node_modules/chimp/node_modules/xolvio-ddp/lib/ddp-client.js:309:10)
  at [object Object]._onTimeout (/usr/local/lib/node_modules/chimp/node_modules/xolvio-ddp/lib/ddp-client.js:114:58)
  at Timer.listOnTimeout (timers.js:92:15)