[perl #66624] [BUG] Bogus unthrown exception when using 'index' on non-substring in Rakudo

[Patrick R. Michaud via RT]

Rakudo 95a2c4f now gives a more useful error message when returning the
failure for not finding a given substring:

  pmich...@orange:~/rakudo$ ./perl6
  > say index "abcd", "x"
  Substring 'x' not found in 'abcd'

Closing ticket, thanks!

Pm