[perl #129781] [SEGV] when await()ing a bunch of "start ‘/etc/hostname’.IO ~~ :e"

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# New Ticket Created by  Daniel Green 
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await (for ^7 { start ‘/etc/hostname’.IO ~~ :e })

regular perl6-valgrind-m output here:
https://gist.github.com/MasterDuke17/9ab9ec5bdbc483bfe63213bf26f82316

with --leak-check=full and --trace-children=yes here:
https://gist.github.com/MasterDuke17/e47e797da08f6bfe57491ca973703698