allow failures on 7.4

.travis.yml

@@ -4,36 +4,37 @@ sudo: false
 
 cache:
   directories:
-    - $HOME/.composer/cache
-    - vendor
+  - $HOME/.composer/cache
+  - vendor
 
 git:
   depth: 5
 
 php:
-  - 5.4
-  - 5.5
-  - 5.6
-  - 7.0
-  - 7.1
-  - 7.2
-  - 7.3
-  - 7.4snapshot
-  - nightly
+- 5.4
+- 5.5
+- 5.6
+- 7.0
+- 7.1
+- 7.2
+- 7.3
+- 7.4snapshot
+- nightly
 
 matrix:
   include:
-    - dist: precise
-      php: 5.3
+  - dist: precise
+    php: 5.3
   fast_finish: true
   allow_failures:
-    - php: nightly
+  - php: nightly
+  - php: 7.4snapshot
 
 before_script:
-  - composer install --no-interaction --no-progress --prefer-dist --ansi
+- composer install --no-interaction --no-progress --prefer-dist --ansi
 
 script:
-  - vendor/bin/phpunit --coverage-clover=coverage.xml
+- vendor/bin/phpunit --coverage-clover=coverage.xml
 
 after_success:
-  - bash <(curl -s https://codecov.io/bash)
+- bash <(curl -s https://codecov.io/bash)