stderr:
<stdin>:1:20: warning: 'is' test is always true Optional<Any>.none is AnyObject ^ <stdin>:1:20: warning: conditional cast from 'Optional<Any>' to 'AnyObject' always succeeds Optional<Any>.none is AnyObject ^ <stdin>:1:20: warning: expression of type 'Bool' is unused Optional<Any>.none is AnyObject ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~