rvm:
  - 2.4.0
  - 2.6.0
  - jruby-9.2.7.0
jdk:
  - oraclejdk9
before_install:
 - sudo apt-get update
 - sudo apt-get install libicu-dev

rvm:
  - 2.4.0
  - 2.6.0
  - jruby-9.1.9.0
jdk:
  - oraclejdk9
before_install:
 - sudo apt-get update
 - sudo apt-get install libicu-dev

Use a precompiled jruby on Travis
Use a precompiled jruby on Travis
