Try including 5.3 in dist: precies matrix.

Author: gitlost

.travis.yml

@@ -4,24 +4,16 @@ dist: trusty
 language: php
 
 php:
-    - 5.3
     - 5.4
     - 5.5
     - 5.6
     - 7.0
     - 7.1
 
-env:
-
 matrix:
   include:
-    - php: 5.3
-      dist: precise
-    - php: 5.4
-    - php: 5.5
-    - php: 5.6
-    - php: 7.0
-    - php: 7.1
+    - dist: precise
+      php: 5.3
 
 before_script:
   - php -m