Full-app test command not terminating

I want to run the full-app tests in a CI pipeline.
I use the following command:

TEST_CLIENT=0 meteor test --once --full-app --driver-package meteortesting:mocha

The output ends with this, but the process doesn’t terminate.

I20210920-16:25:51.464(2)? 5 passing (163ms) I20210920-16:25:51.464(2)? I20210920-16:25:51.465(2)? SKIPPING CLIENT TESTS BECAUSE TEST_CLIENT=0

What could I be missing?

And another question: Is it possible to run both server and full-app tests with a single command?

Thanks a lot in advance!