Work around persistent TravisCI timeouts.

.travis.yml

@@ -346,6 +346,12 @@ matrix:
         - ./build-support/bin/native/generate-bintray-manifest.sh
 
 script: |-
+  # The travis_wait script affords for tests that take longer than 10 minutes to run, see:
+  #   https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received
+  # This issue tracks the fact that we have these sorts of tests, which we should not for
+  # the sake of granularity and scheduling: https://github.com/pantsbuild/pants/issues/4204
+  travis_wait
+
   uname -a
 
   if [ "${TRAVIS_OS_NAME}" == "osx" ]; then