language: ruby
rvm:
  - 1.9.3
  - 2.3
  - 2.4
  - 2.5
  - 2.6
  - ruby-head

matrix:
  allow_failures:
    - rvm: ruby-head

language: ruby
rvm:
  - 2.3
  - 2.4
  - 2.5
  - 2.6
  - ruby-head

matrix:
  allow_failures:
    - rvm: ruby-head

Remove 1.9.3 from the test matrix
Remove 1.9.3 from the test matrix

Travis can no longer install Ruby 1.9.3, so I guess we can't test it
anymore.

https://travis-ci.org/rgrove/crass/jobs/545491021
