Try switching Travis environments so test jobs succeed

Author: YetiCGN

.travis.yml

@@ -12,14 +12,14 @@ cache:
 matrix:
   fast_finish: true
   include:
-    - php: nightly
-      env:
-        - SYMFONY_VERSION="dev-master"
-        - CHECK_PHP_SYNTAX="no"
     - php: 7.1
       env:
         - SYMFONY_VERSION="3.2.*"
         - CHECK_PHP_SYNTAX="yes"
+    - php: nightly
+      env:
+      - SYMFONY_VERSION="dev-master"
+      - CHECK_PHP_SYNTAX="no"
   allow_failures:
     - php: nightly