committable6

query

4b02b8aadcb4^,4b02b8aadcb4 with (Seq.new: class :: does Iterator { method pull-one { say "pull"; $++ < 3 ?? $++ !! IterationEnd } }.new,).map(|*).skip { .sink; .say }  

result

¦«4b02b8aadcb4^»:
pull
pull
pull
pull
This Seq has already been iterated, and its values consumed
(you might solve this by adding .cache on usages of the Seq, or
by assigning the Seq into an array)
  in block <unit> at /tmp/Z6EFGumA5G line 1
 «exit code = 1»
¦«4b02b8a»:
pull
This Seq has already been iterated, and its values consumed
(you might solve this by adding .cache on usages of the Seq, or
by assigning the Seq into an array)
  in block <unit> at /tmp/Z6EFGumA5G line 1

pull
pull
pull «exit code = 1»