.travis.yml in bundler-advise-1.1.6 vs .travis.yml in bundler-advise-1.2.0

@@ -1,88 +1,58 @@
 language: ruby
 
 before_install:
-  - gem update --system $RUBYGEMS_VERSION
-  - gem list bundler -d # see where the bundler versions are installed and which are listed as default
-  - # Move bundler gemspec from default to reg directory so it can be uninstalled. Is there an API way to do this?
-  - mv /home/travis/.rvm/rubies/ruby-$RVM_VER/lib/ruby/gems/$RUBY_MAJ_MIN.0/specifications/default/bundler-*.gemspec /home/travis/.rvm/rubies/ruby-$RVM_VER/lib/ruby/gems/$RUBY_MAJ_MIN.0/specifications/
-  - for dir in $(echo $GEM_PATH | tr ':' ' '); do gem uninstall -i $dir bundler -a -x; done
-  - gem install bundler -v $BUNDLER_TEST_VERSION
-  - bundle --version
+  - curl -sSl https://raw.githubusercontent.com/chrismo/bundler-fixture/master/only-bundler.sh | bash -s ${BUNDLER_TEST_VERSION} ${RUBYGEMS_VERSION}
 
 install:
   - bundle install --jobs=3 --retry=3 # do not use --deployment and freeze it
 
 matrix:
   include:
     - rvm: 2.3.8
       env:
-        - RVM_VER=2.3.8
-        - RUBY_MAJ_MIN=2.3
         - RUBYGEMS_VERSION=2.5.2
         - BUNDLER_TEST_VERSION=1.11.2
     - rvm: 2.3.8
       env:
-        - RVM_VER=2.3.8
-        - RUBY_MAJ_MIN=2.3
         - RUBYGEMS_VERSION=2.5.2
         - BUNDLER_TEST_VERSION=1.12.5
     - rvm: 2.4.5
       env:
-        - RVM_VER=2.4.5
-        - RUBY_MAJ_MIN=2.4
         - RUBYGEMS_VERSION=2.6.14
         - BUNDLER_TEST_VERSION=1.13.6
     - rvm: 2.4.5
       env:
-        - RVM_VER=2.4.5
-        - RUBY_MAJ_MIN=2.4
         - RUBYGEMS_VERSION=2.6.14
         - BUNDLER_TEST_VERSION=1.14.6
     - rvm: 2.5.3
       env:
-        - RVM_VER=2.5.3
-        - RUBY_MAJ_MIN=2.5
         - RUBYGEMS_VERSION=2.7.6
         - BUNDLER_TEST_VERSION=1.15.4
     - rvm: 2.5.3
       env:
-        - RVM_VER=2.5.3
-        - RUBY_MAJ_MIN=2.5
         - RUBYGEMS_VERSION=2.7.6
         - BUNDLER_TEST_VERSION=1.16.6
     - rvm: 2.5.3
       env:
-        - RVM_VER=2.5.3
-        - RUBY_MAJ_MIN=2.5
         - RUBYGEMS_VERSION=2.7.6
         - BUNDLER_TEST_VERSION=1.17.3
     - rvm: 2.4.5
       env:
-        - RVM_VER=2.4.5
-        - RUBY_MAJ_MIN=2.4
         - RUBYGEMS_VERSION=2.6.14
         - BUNDLER_TEST_VERSION=1.17.3
     - rvm: 2.3.8
       env:
-        - RVM_VER=2.3.8
-        - RUBY_MAJ_MIN=2.3
         - RUBYGEMS_VERSION=2.5.2
         - BUNDLER_TEST_VERSION=1.17.3
     - rvm: 2.6.0
       env:
-        - RVM_VER=2.6.0
-        - RUBY_MAJ_MIN=2.6
         - RUBYGEMS_VERSION=3.0.1
         - BUNDLER_TEST_VERSION=1.17.3
     - rvm: 2.5.3
       env:
-        - RVM_VER=2.5.3
-        - RUBY_MAJ_MIN=2.5
         - RUBYGEMS_VERSION=3.0.1
         - BUNDLER_TEST_VERSION=2.0.1
     - rvm: 2.6.0
       env:
-        - RVM_VER=2.6.0
-        - RUBY_MAJ_MIN=2.6
-        - RUBYGEMS_VERSION=3.0.1
-        - BUNDLER_TEST_VERSION=2.0.1
+        - RUBYGEMS_VERSION=latest
+        - BUNDLER_TEST_VERSION=latest