[perl #129830] [BUG] Cannot call .type method on an Array instance

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# New Ticket Created by  Itsuki Toyota 
# Please include the string:  [perl #129830]
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# <URL: https://rt.perl.org/Ticket/Display.html?id=129830 >


See the following result:

$ perl6 -e 'class TypeHouse { has Int @.array; }; 
TypeHouse.^attributes[0].type.say;'
Cannot unbox a type object
  in block <unit> at -e line 1

$ perl6 --version
This is Rakudo version 2016.09-105-g4abc28c built on MoarVM version 
2016.09-13-g34c375a
implementing Perl 6.c.