BAIL_OUT() used to be BAILOUT(). The current Test::Builder has BAIL_OUT(), so I think that you could use BAILOUT() instead. According to this thread from Google groups perl.perl6.internals, BAILOUT can be used and remains as an undocumented and deprecated method.

In reply to Re: BAIL_OUT with older Test::More by Khen1950fx
in thread BAIL_OUT with older Test::More by Anonymous Monk

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