they're not doing anything, and they're slightly in the way of reworking
the rust build infra. we'll add them back once that rework is completed.
Change-Id: Idde8ba3585fd08b89b4b4298349f8f58a29a9661
This is purely to let Cargo's dependency resolver do stuff for us, we do
not actually intend to build this stuff with Cargo to begin with.
Change-Id: I4c08d55595c7c27b7096375022581e1e34308a87
eldritch horrors