Allow failures for PHP nightly.

Currently PHPUnit is failing on PHP nightly and therefore the build is failing.

This change will prevent complete builds failing for failures which occur only in PHP nightly.

Author: jrfnl

.travis.yml

@@ -12,6 +12,13 @@ php:
   - hhvm
   - nightly
 
+matrix:
+  fast_finish: true
+
+  allow_failures:
+    # Allow failures for unstable builds.
+    - php: nightly
+
 before_script:
   - if [[ ${TRAVIS_PHP_VERSION:0:1} != "7" && $TRAVIS_PHP_VERSION != "nightly" && $TRAVIS_PHP_VERSION != "hhvm" ]]; then phpenv config-add php5-testingConfig.ini; fi
   - if [[ ${TRAVIS_PHP_VERSION:0:1} == "7" || $TRAVIS_PHP_VERSION == "nightly" ]]; then phpenv config-add php7-testingConfig.ini; fi