You can see, that runtests.sh here is failing on Idempotence test, although on other distors in the same build it works ok (and those failing distros aren't the same every build). You can see this behavior in the master branch as well:

• [c38b8fd](https://travis-ci.org/openwisp/ansible-openwisp2/builds/626669311?utm_sour

Depends on openwisp/openwisp-utils#98.

Use the decorators mentioned in the issue linked above to silence the output of noisy tests.