fn file_indices(
tcx: TyCtxt<'_>,
) -> (FxHashMap<*const SourceFile, SourceFileIndex>, FxHashMap<SourceFileIndex, EncodedSourceFileId>)
fn file_indices(
tcx: TyCtxt<'_>,
) -> (FxHashMap<*const SourceFile, SourceFileIndex>, FxHashMap<SourceFileIndex, EncodedSourceFileId>)