CPAN::Index version 1.93 required--this is only version 0.01
I think you'll find that you have 2 versions of CPAN::Index. Version 0.01 will be in perl/site/lib/CPAN/Index.pm, and a version that is later than 1.93 in perl/lib/CPAN/Index.pm. Remove the file perl/site/lib/CPAN/Index.pm (ie version 0.01) and that particular problem should be fixed.
But make sure you don't remove perl/lib/CPAN/Index.pm.