[perl #114370] LTA error message when declaring an enum of a type variable

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# New Ticket Created by  Moritz Lenz 
# Please include the string:  [perl #114370]
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# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=114370 >


20:08 < moritz> r: role A[::T] { my T enum B <C D> }
20:08 <+p6eval> rakudo c1bfbb: OUTPUT«===SORRY!===␤Cannot auto-generate
a proto method for 'Numeric' in the setting␤»

I don't think the spec requires it to live, but this looks like an
internal compiler error.