message: improve failure logging in travis
  This will hopefully show why elasticsearch sometimes doesn't start.
diff: @@ -67,11 +67,11 @@ install:
  - travis_wait lerna bootstrap
  - wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-${ES_VERSION}.tar.gz
  - tar -xzf elasticsearch-${ES_VERSION}.tar.gz
  - - ./elasticsearch-${ES_VERSION}/bin/elasticsearch 2>&1 >> /dev/null &
  + - ./elasticsearch-${ES_VERSION}/bin/elasticsearch 2>&1 > /tmp/es.log &
  before_script:
  - export DISPLAY=:99; sh -e /etc/init.d/xvfb start; sleep 3
  - - wget -q --waitretry=1 --retry-connrefused -T 1 -O - http://127.0.0.1:9200
  + - wget -q --waitretry=1 --retry-connrefused -T 1 -O - http://127.0.0.1:9200 || cat /tmp/es.log
  script:
  - yarn test
  