Help with Optim tests on nightlies


I have a problem with Optim, and I’m not exactly sure how to debug it. On master I get the following log ( , warning it’s a 3mb stack trace) when trying to test the PR that can be found here . Notice, that Optim master will give a similar error message, so it’s not really that PR specifically, it’s just easier to share the link for the log that way.

Basically, I have no idea what that output tells me. We might be doing something that is illegal under the new type-algorithm, but I have no idea where to start.