Investigate test-cluster-worker-isdead.js failure

[Fishrock123]

This one seems new. Failed in one run but not the next run.

not ok 119 test-cluster-worker-isdead.js
#
#assert.js:89
#  throw new assert.AssertionError({
#  ^
#AssertionError: After an event has been emitted, isDead should return true
#    at Worker.<anonymous> (/usr/home/iojs/build/workspace/node-test-commit-freebsd/nodes/freebsd102-64/test/parallel/test-cluster-worker-isdead.js:14:12)
#    at emitTwo (events.js:87:13)
#    at Worker.emit (events.js:172:7)
#    at ChildProcess.<anonymous> (cluster.js:355:14)
#    at ChildProcess.g (events.js:260:16)
#    at emitTwo (events.js:87:13)
#    at ChildProcess.emit (events.js:172:7)
#    at Process.ChildProcess._handle.onexit (internal/child_process.js:200:12)

https://ci.nodejs.org/job/node-test-commit-freebsd/332/nodes=freebsd102-64/console

[jasnell]

I've spotted this one before also, it also disappeared in subsequent runs.

[JungMinu]

I've also experienced this with my local test on OS X

[santigimeno]

I think this one can be closed now. See: #3954

[Trott]

Closing. Re-open if I'm mistaken.