.travis.yml in async-redis-0.3.2 vs .travis.yml in async-redis-0.3.3

@@ -9,16 +9,15 @@
   include:
     - rvm: 2.3
     - rvm: 2.4
     - rvm: 2.5
     - rvm: 2.6
+    - rvm: 2.6
+      env: COVERAGE=BriefSummary,Coveralls
+    - rvm: ruby-head
     - rvm: truffleruby
     - rvm: jruby-head
       env: JRUBY_OPTS="--debug -X+O"
-    - rvm: ruby-head
-    - rvm: rbx-3
   allow_failures:
-    - rvm: truffleruby
     - rvm: ruby-head
-    - rvm: jruby-head
     - rvm: truffleruby
-    - rvm: rbx-3
+    - rvm: jruby-head