updatedb continues processing updates after #abort

Consider two modules, dummy1 and dummy2, with the following update functions:

function dummy1_update_6001() {
  $ret = array();
  if (!variable_get('dummy2_update_6001', 0)) {
    $ret['#abort'] = array('success' => FALSE,
      'query' => 'Dummy2 must be updated first');
    return $ret;
  }
  variable_set('dummy1_update_6001', 1);
  return $ret;
}

function dummy1_update_6002() {
  $ret = array();
  variable_set('dummy1_update_6002', 1);
  return $ret;
}

function dummy2_update_6001() {
  $ret = array();
  variable_set('dummy2_update_6001', 1);
  return $ret;
}

If you run update.php, the dummy1_update_6001 aborts and only dummy2_update_6001 runs. Then, rerunning the dummy1 updates succeeds - all three variables are set.

If you run drush updatedb, it should do both updates and all three variables are set. However, after dummy1_update_6001 aborts, dummy1_update_6002 is run immediately, setting the schema_version to 6002, then dummy2_update_6001 is run - it never goes back to dummy1_update_6001, and that variable never gets set.

I believe the problem is in _update_do_one() - the update function returns into $ret, but $context['results'][$module] is what's being checked for the #abort.