Function rustc_trait_selection::traits::project::confirm_async_closure_candidate

fn confirm_async_closure_candidate<'cx, 'tcx>(
    selcx: &mut SelectionContext<'cx, 'tcx>,
    obligation: &ProjectionTyObligation<'tcx>,
    nested: Vec<PredicateObligation<'tcx>>
) -> Progress<'tcx>