This seems to be caused by new modifier I tried adding. I pretty much just copied and renamed the boolean modifier. None of these errors seem to show any of the files I modified. I ended up building master to see if it would build or not. It did with no issues, so something I added I guess is causing this.
Probably you copy pasted code from the boolean modifier, but did not rename boolean to the name of the new modifier everywhere. In particular in the RNA code, which is used to generate other code.