This not a critical issue, but make user confuse.

[peter58228]

(node:512) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 unpipe listeners added to [DestroyableTransform]. Use emitter.setMaxListeners() to increase limit
(node:512) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 drain listeners added to [DestroyableTransform]. Use emitter.setMaxListeners() to increase limit
(node:512) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 error listeners added to [DestroyableTransform]. Use emitter.setMaxListeners() to increase limit
(node:512) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 close listeners added to [DestroyableTransform]. Use emitter.setMaxListeners() to increase limit
(node:512) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 finish listeners added to [DestroyableTransform]. Use emitter.setMaxListeners() to increase limit

[kt3k]

I think I've seen this warnings before, but don't remember the reason for now. PRs are welcome.

Thank you for reporting.