Scala 2.12和Travis.ci - 如何排除与Java 6的组合？

Question

Adding Scala 2.12 to .travis.yml produces a new problem for me, because now the builds will fail under Java 6:

language: scala

scala:
  - 2.12.0
  - 2.11.8
  - 2.10.6

jdk:
  - oraclejdk8
  - openjdk6

How can I fix this to exclude the combination (scala 2.12.0, jdk opendjk6)?

Answer 1

The answer of @DevZer0 is correct. I want to add that one has to change syntax as well. In order to make the matrix exclusion work, instead of

jdk:
  - oraclejdk8
  - openjdk6

one now has to use

env:
  - JDK=oraclejdk8
  - JDK=openjdk6

before_script:
  - jdk_switcher use $JDK

My complete script:

language: scala

scala:
  - 2.12.0
  - 2.11.8
  - 2.10.6

env:
  - JDK=oraclejdk8
  - JDK=openjdk6

before_script:
  - jdk_switcher use $JDK

matrix:
  # scala 2.12 requires java 8
  exclude:
    - scala: 2.12.0
      env: JDK=openjdk6

Answer 2

A simple search rendered the answer you are looking for, i believe your travis.yml needs this configuration

matrix:   # scala 2.12 requires java 8   exclude:
    - scala: 2.12.0-M5
      env: JDK=oraclejdk7
    - scala: 2.12.0-M5
      env: JDK=openjdk7
    - scala: 2.12.0-RC1
      env: JDK=oraclejdk7
    - scala: 2.12.0-RC1
      env: JDK=openjdk7
    - scala: 2.12.0-RC2
      env: JDK=oraclejdk7
    - scala: 2.12.0-RC2
      env: JDK=openjdk7
    - scala: 2.12.0
      env: JDK=oraclejdk7
    - scala: 2.12.0
      env: JDK=openjdk7

https://github.com/typesafehub/scala-logging/blob/master/.travis.yml