cluster stack traces

gistfile1.txt

TypeError: Object #<Object> has no method 'on'
    at Worker.start (./node_modules/cluster/lib/worker.js:83:17)
    at Socket.<anonymous> (./node_modules/cluster/lib/master.js:258:16)
    at Socket.emit (events.js:61:17)
    at Socket._onConnect (net.js:587:12)
    at IOWatcher.onWritable [as callback] (net.js:186:12)

Error: Socket is not writable
    at Socket._writeOut (net.js:392:11)
    at Socket.write (net.js:378:17)
    at Master.<anonymous> (./node_modules/cluster/lib/master.js:226:13)
    at Master.call (./node_modules/cluster/lib/worker.js:72:17)
    at Worker.connect (./node_modules/cluster/lib/worker.js:138:15)
    at Worker.invoke (./node_modules/cluster/lib/mixins/receiver.js:56:18)
    at Worker.frame (./node_modules/cluster/lib/mixins/receiver.js:35:14)
    at Socket.<anonymous> (native)
    at Socket.emit (events.js:64:17)
    at Socket._onReadable (net.js:672:31)