Compiler output (maybe?) showing when I try to run code

I’ve been seeing some weird stuff when I try to run reverse mode autodiff. I’ve pasted the last few lines of what I’m seeing, but I’m not sure why it’s doing this. Not sure if it happened when I updated some packages, or when I recently reworked my collection of messy scripts to roughly conform to the Julia package structure, but it’s very weird either way. It seems to output this kind of thing with both Zygote and Mooncake. I guess what I’m hoping to understand is what kind of code is it dump...