The list of CPAN Testers reports you cite are fail for completely different reasons to what you are experiencing, assuming this is you

If that is the error you are getting then there is something wrong with your PATH environment variable that Perl's taintmode doesn't like

From perlsec:

For "Insecure $ENV{PATH}" messages, you need to set $ENV{'PATH'} to a known value, and each directory in the path must be absolute and non-writable by others than its owner and group. You may be surprised to get this message even if the pathname to your executable is fully qualified. This is not generated because you didn't supply a full path to the program; instead, it's generated because you never set your PATH environment variable, or you didn't set it to something that was safe. Because Perl can't guarantee that the executable in question isn't itself going to turn around and execute some other program that is dependent on your PATH, it makes sure you set the PATH.