Function rustc_trans::middle::stability::check_unstable_api_usage

pub fn check_unstable_api_usage(tcx: TyCtxt<'a, 'tcx, 'tcx>) -> HashMap<InternedString, StabilityLevel, BuildHasherDefault<FnvHasher>>

Unstable (rustc_private)

Cross-references the feature names of unstable APIs with enabled features and possibly prints errors. Returns a list of all features used.