By default Travis times out if a command runs with no output for more that 10 minutes. The error is the following:

No output has been received in the last 10 minutes, this potentially indicates a stalled build or something wrong with the build itself.

By default mvn integration-test produces no output until all ITs are done. In Compute this causes Travis to error as integration tests take more than 10 minutes.

This could be overcome by setting travis_wait to be more tolerant.