I know debugging mentioned in this forum are more about appication level. One trouble I falled into recently was some errors occured only in my local machine. The ray system is broken. I touched you guys but it is hard for you to reproduce the issues in your side . A feasible way might be to debug it by myself.
It is helpful if ray team can draft a doc to guide non-ray team developers to debug into the ray core easily. Maybe there have some materials already but I did not find from ray website.