Looks like one of your JVMs is being killed because it exits. If your test threw an exception, called System.exit, it times out waiting for a non-daemon thread to complete or if the JVM just crashes these could be the reason test suites may not run.

https://maven.apache.org/surefire/maven-surefire-plugin/examples/shutdown.html

It's weird "killed" is all that is written to the console. I'd expect a little more feedback from surefire or maven about why the JVM was killed. Could someone have written a test that is doing something it shouldn't?