Unwanted output in the test output

I’m suppressing all curl output from my deployment script, but this just keeps popping when I curl to a 404:

[Fri Dec  8 04:32:33 2017] 127.0.0.1:58728 [404]: /

This is intended behavior in my script and this output pollutes my test output, since it’s running in a loop. How to suppress this output and only keep the one that my script actually sends?

Can you share the script?