Trait Alias CompileTimeMachine 

trait CompileTimeMachine<'tcx> = Machine<'tcx, MemoryKind = MemoryKind, Provenance = CtfeProvenance, ExtraFnVal = !, FrameExtra = (), AllocExtra = (), MemoryMap = FxIndexMap<AllocId, (MemoryKind<MemoryKind>, Allocation)>> + HasStaticRootDefId;