I think there are two problems here, both mine. The first is that
the regex is slightly wrong. I have now updated it (it was
capturing when it should not have been). The second problem is
that I named the fields in the Uptime struct incorrectly. They
should be one, five, and fifteen, as you have them, but I named
them five, ten, and fifteen. This incorrect naming was only in the
section where the entire module was presented (not where it
was in bits and pieces amidst explanation).
Thanks for alerting me to these. :)