oss: Remove --error from travis commands

Problem / Solution

When Scalatests fail, they log at info level which means we don't have
enough details in our logs to diagnose problems. See [1] for example.

[1] https://s3.amazonaws.com/archive.travis-ci.org/jobs/159412682/log.txt

RB_ID=871128

.travis.yml

@@ -30,9 +30,9 @@ before_script:
   - curl -s https://raw.githubusercontent.com/twitter/dodo/develop/bin/build | bash -s -- --no-test twitter-server
   - travis_retry ./sbt --error ++$TRAVIS_SCALA_VERSION update
 
-script: 
-  - travis_retry ./sbt --error ++$TRAVIS_SCALA_VERSION clean coverage test coverageReport
+script:
+  - travis_retry ./sbt ++$TRAVIS_SCALA_VERSION clean coverage test coverageReport
   - ./sbt ++$TRAVIS_SCALA_VERSION coverageAggregate
 
-after_success: 
+after_success:
   - bash <(curl -s https://codecov.io/bash)