Function rustc_trait_selection::infer::error_reporting::unexpected_hidden_region_diagnostic

source ยท 
pub fn unexpected_hidden_region_diagnostic<'tcx>(
    tcx: TyCtxt<'tcx>,
    generic_param_scope: LocalDefId,
    span: Span,
    hidden_ty: Ty<'tcx>,
    hidden_region: Region<'tcx>,
    opaque_ty_key: OpaqueTypeKey<TyCtxt<'tcx>>,
) -> Diag<'tcx>