[perl #64668] Null PMC access when calling rules that do not exist from regexes in Rakudo

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
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<masak> rakudo: say 42 ~~ /<number>/
<p6eval> rakudo 5b679a: OUTPUT«Unable to find regex 'number'␤Null PMC
access in invoke() [...]
* masak submits rakudobug