Raycast from IAnimationJob.ProcessAnimation()

(Hopefully this isn't bad-form, but I posted to scripting originally, but now it seems like that wasn't the correct category?)

I'm trying to write an animation job that performs foot-fixup against terrain as part of a PlayableGraph. However, both Physics.Raycast() and RaycastCommand.ScheduleBatch() complain about not being on the main thread.

Point of clarification: the foot location that we're querying-from is coming from an AnimationStream input -- our job adjusts the incoming intermediate pose with ik -- so the position isn't known before the playable-graph kicks-off evaluation.

What's the correct way to raycast from the playable thread? If not, is there a way to synchronize with the main thread? Or else, what's the best place to request support, since this would be a high-value feature.

For reference, here's the log from attempting to raycast through the job system.