I agree with this. Disable your antivirus software (which you probably cannot do), or file a report with IT suggesting their AV software is preventing you from getting your job done, or install with --force (or whatever the option is called for your cpan installer). Force install allows for installation even if the tests fail. You know the tests will fail, but assume that things are probably ok anyway.
The other alternative is to download and extract the tarball, then make, make test, verify that the only failure is the one you believe you can live with, and then make install.