travis: allow PHP 7.2 to fail, segfaulting at the moment

TomasVotruba · jaapio · commit 4314705d0d68 · 2017-11-15T22:30:06.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,6 +5,10 @@ php:
   - 7.1
   - 7.2
 
+matrix:
+  allow_failures:
+    - php: 7.2
+
 cache:
   directories:
     - $HOME/.composer/cache
