Xenial: google-chrome-stable cannot be installed (not authenticated)

[BanzaiMan]

Sounds like a duplicate of

The following packages cannot be authenticated! google-chrome-stable

https://travis-ci.com/hellosuper/super/builds/144540460 E: There were unauthenticated packages and -y was used without --allow-unauthenticated * apt-get.diagnostics apt-get install failed The command “sudo -E apt-get -yq --no-install-suggests --no-install-recommends $(travis_apt_get_options) install google-chrome-stable fluxbox” failed and exited with 100 during .