Skallesh

In general, asserting that an exact message is not reported can backfire causing a test to pass for the wrong reasons, especially if development changes the message.
Due to several recent updates with respect to exitCode and stdout/stderr streams, I would make this assert against both stdout and stderr to make sure that neither one has this message.
I think a more reliable assert is to actually count the number of entitlements before and after and make sure that they stay the same.  You can use clienttasks.getCurrentEntitlementCertFiles().size()