doesn't this confuse programs parsing the output, like our test scripts?

I am happy to adopt the test scripts then, but so far I am not sure if thats the reason for the 9 failing checks.
Those are just empty lines without useful information, there must be a better way to test if needed. Overall, I think this feature is not really useful for embedding wamr, as it always prints this information. I am also happy to adopt it to only print given certain defines.

The failing checks all seem timeouts, so I think no test checks for this.

The failing checks all seem timeouts, so I think no test checks for this.

i guess a test timeout is actually a typical symptom of unexpected output.
i can't say if they are related to your change or not w/o investigating the test logs.
(sorry, right now i have no time to investigate them by myself.)