Error and modlist are in this gist:
https://gist.github.com/Derpford/297996c9d3b2442da9d08e47eb7d351c

It looks like something is causing some kind of infinite recursion. (That repeating line at the end of the list is not a mistake. That's what the error message looks like.) I haven't been able to narrow down what's causing it.

...On closer inspection, this happens without Alloygery. Would be REALLY nice if I had something indicating which datapack is erroring here...