"Edit: How would I replicate the OP's BAIL_OUT semantics when using lives_ok?"

lives_ok sub { require 'script' } or
    BAIL_OUT("bin/script did not load: $@");
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:-)

To make your test suite stop any time a test fails:

use Test::Most 'die';
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(Although you cannot control the output as with BAIL_OUT, and it will apply to all tests in the file.)

(Note that Test::Most loads Test::More and Test::Exception as well as others and warnings and strict.)

Hope this helps!

Update: showed one-test solution first