Unknown bot is a bit too verbose. How about, we patch it to emit just one line of robot barf per event. The second message already includes this information, "FIXED in 26 min:".
Related task T64573: Have wmf-insecte use color to make the reading of the scrollback easier
This is stalled until upstream fix it or some of our java developers look at it.
See @hashar comment T95395#1193763
Upstream bug is JENKINS-5031.