It doesn't appear as though there are any test failures for the DateTime::Format::Strptime distribution, and I see you're running Strawberry (installed) on Windows. I can't replicate here.

Could you please post the full output of the perl -V (Capital "V") command and I'll do some further testing? Also, perhaps try the install one more time. It could have been simply a one-off glitch: cpanm DateTime::Format::Strptime.

-stevieb