Hi, you have only one choice, ignore the test failure :)

How do i interpret this info?

If you have to ask, the information is not for you :)

Mostly its for the perl5-porters to interpret, you send them a report if you feel the urge (perlbug...), and get on with your life :)

It looks like there is one failure in locale.t . I don't think I need to worry about what I think is locale functions. How vital is this section?

Does your code base make use of locales? (have you read perllocale)

If your code base makes use of locales, it should have test for testing that functionality, which should take care of making sure this feature works the way you need it (vitality and what not)

How do I pin down what test had trouble then track it down?

Turn on verbosity , it can be as simple as running the test file manually, something like (untested)  perl harness -v ext/POSIX/t/locale.t