try a simpler approach

.travis.yml

@@ -9,10 +9,8 @@ perl:
 env: AUTOMATED_TESTING=1
 before_install:
   - cpanm --quiet --notest Config::Tiny Geo::HelmertTransform Test::HTML::Content Wiki::Toolkit::Plugin::Ping Devel::Cover::Report::Coveralls Test::JSON Class::Accessor
-  - git clone git://github.com/travis-perl/helpers ~/travis-perl-helpers
-  - source ~/travis-perl-helpers/init
 install:
-  - cpan-install --deps
+  - cpanm --verbose --notest --installdeps .
 script: perl Build.PL && ./Build build && cover -test -ignore Build.pm -report coveralls
 notifications:
   irc: "irc.perl.org#openguides-notices"