fn relate_mir_and_user_ty<'tcx>(
ocx: &ObligationCtxt<'_, 'tcx>,
param_env: ParamEnv<'tcx>,
span: Span,
mir_ty: Ty<'tcx>,
user_ty: Ty<'tcx>,
) -> Result<(), NoSolution>
fn relate_mir_and_user_ty<'tcx>(
ocx: &ObligationCtxt<'_, 'tcx>,
param_env: ParamEnv<'tcx>,
span: Span,
mir_ty: Ty<'tcx>,
user_ty: Ty<'tcx>,
) -> Result<(), NoSolution>