[perl #100768] [BUG] -Int dies in Rakudo

[Carl Mäsak]

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<masak> perl6: say -Int
<p6eval> rakudo ff78b5: OUTPUT«Cannot unbox type object to a native
integer␤  in sub prefix:<-> [...]
<p6eval> ..pugs, niecza v10-38-g23f1b2e: OUTPUT«0␤»
* masak submits rakudobug

I think -Int should work and yield 0 without an error or warning. So,
it would seem, do Pugs and Niecza.