machine:
  node:
    version: 6

test:
  pre:
    - npm run lint

machine:
  node:
    version: 6

dependencies:
  pre:
    - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.9 20
    - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.9 20

test:
  pre:
    - npm run lint

Switch back to Ubuntu 12
[CI] Switch back to Ubuntu 12
