Allow failure for php8 while travis add this php version

Geolim4 · Geolim4 · commit 3ec5d6353c77 · 2020-12-20T00:11:36.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -50,6 +50,7 @@ jobs:
   allow_failures:
     # - php: nightly
     - php: hhvm
+    - php: 8.0
 
 install:
   - ./bin/ci/install_dependencies.sh
