Hello Taro! Firstly, thank you for being a cpantester and helping us improve the quality of our code.
I see you've sumbitted a test failure for "DBI-1.611_94 v5.8.8 Windows" http://www.cpantesters.org/cpan/report/7996865 Sadly we've not been able to identify a cause or reproduce the problem. Can you confirm if the failure is consistent for you? i.e., that it fails the same way each time? Would you be willing to help us investigate the problem? i.e., run various command for us on your system? If so, it would help if you could join us on the #dbi IRC channel on irc.perl.org as that'll speed up the process. Look for the users "[Sno]", "[Sno|", or "mje" as they're looking into the problem for me. Thanks! Tim.