I would not return an array, but an array ref. First, it is more efficient, second, because an array is variable length, you can never easily tack on extra return values because the second expected value is not filling one slot in the return list. Using an array ref instead allows

return 
  $results, \@errors, \@thing_I_discovered_I_needed_later;
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Carter's compass: I know I'm on the right track when by deleting something, I'm adding functionality

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