language: php
php:
  - '7.0'
  - '7.1'
  - '7.2'
  - 'nightly'
matrix:
  allow_failures:
    - php: nightly
install:
  - composer install --dev
script: vendor/bin/phing

language: php
php:
  - '7.0'
  - '7.1'
  - '7.2'
  - 'nightly'
matrix:
  allow_failures:
    - php: nightly
install:
  - composer install
script: vendor/bin/phing

Remove dev option when installing dependencies
Fix: Remove dev option when installing dependencies