pub type MinCaptureInformationMap<'tcx> = FxHashMap<LocalDefId, RootVariableMinCaptureList<'tcx>>;
Given the closure DefId this map provides a map of root variables to minimum
CapturedPlaces that need to be tracked to support all captures of that closure.
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain
repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.