Error when going from ember-cli/etc 3.0.4 to 3.1.0

[rstudner]

ember-utils.js:234 Uncaught RangeError: Maximum call stack size exceeded
    at isInternalSymbol (ember-utils.js:234)
    at Object.get (core_object.js:51)
    at Proxy.unknownProperty (feature-flags.js:192)
    at Object.get (core_object.js:55)
    at Proxy.unknownProperty (feature-flags.js:192)
    at Object.get (core_object.js:55)
    at Proxy.unknownProperty (feature-flags.js:192)
    at Object.get (core_object.js:55)
    at Proxy.unknownProperty (feature-flags.js:192)
    at Object.get (core_object.js:55)

[brandynbennett]

Looks like the unknownProperty implementation is using get and therefore creates an infinite loop.
Also seems related to emberjs/ember.js#16148