OpenAPI spec with circular references getting killed

[reshef-axiom]

I have a 4000 line openapi3 template if that matters, and it has a circular reference.
I kind of solved it (by removing the "require" on a field that caused it) and now for the matter, libopenapi does not indicate circular references. yet I still get killed by the operating system

restish api configure wallak ? Base URI http://localhost:8080 [1] 40774 killed restish api configure wallak

[reshef-axiom]

Is there any way to track the memory usage and/or understand the root cause of this process being killed?