Reworking languages

.travis.yml

@@ -1,24 +1,20 @@
 language: php
-
+dist: trusty
-php:
+sudo: required
-  - 5.3
-  - 5.4
-  - 5.5
-  - 5.6
-  - 7.0
-  - 7.1
-  - nightly
-  - hhvm
-  - hhvm-nightly
 
 matrix:
   include:
+    - php: 5.3
+    - php: 5.4
+    - php: 5.5
+    - php: 5.6
+    - php: 7.0
+    - php: 7.1
     - php: nightly
-      env: ALLOW_FAILURE=1
+      env: TRAVIS_ALLOW_FAILURE=true
+    - php: hhvm
     - php: hhvm-nightly
-      env: ALLOW_FAILURE=1
+      env: TRAVIS_ALLOW_FAILURE=true
-  allow_failures:
-    - env: ALLOW_FAILURE=1
 
 install:
   - composer install