Update Entity translation API usage in Field collection

In my local environment the test is green, maybe the bot is not picking up the updated ET code yet.

Beta6 is out: https://www.drupal.org/project/entity_translation/releases/7.x-1.0-beta6

*** EDIT ***
brain fart.
*** EDIT ***

Actually, the fallback mode the legacy api is still supported by beta6, but the new API function makes more sense. Suggest adding hook_requirements with patch. See forthcomming patch 9

/**
 * Implements hook_requirements().
 */
function field_collection_requirements($phase) {
  $t = get_t();
  // Make to notify people to upgrade to entity_translation beta6
  $requirements = array();

  if (module_exists('entity_translation')) {
    if ($phase == 'update' || $phase == 'install' || $phase == 'runtime' ) {
      $entity_translation_info = system_get_info('module', 'entity_translation');
      $et_installed_version = $entity_translation_info['version'];
      $et_installed_datestamp = $entity_translation_info['datestamp'];
      $march3rd_entity_translation_timestamp = 1488530885;
      if (!isset($entity_translation_info['version']) || !isset($entity_translation_info['datestamp'])) {
        $et_installed_datestamp = 1488530884;
      }

      if ($et_installed_datestamp < $march3rd_entity_translation_timestamp) {
        $description = $t('Your entity_translation installation version: %version is too old. field_collection requires entity_translation at least beta6 from march 3 2017 or newer.  Your choice is to either upgrade entity_translation or to disable it.', array('%version' => $et_installed_version));
        $requirements['entity_translation']['description'] = $description;
        $requirements['entity_translation']['severity'] = REQUIREMENT_ERROR;
        $requirements['entity_translation']['value'] = $et_installed_version;
        $requirements['entity_translation']['title'] = $t('Entity translation (when installed) with Field Collection');
	drupal_set_message($description, 'error', TRUE);
      }
    }
  }
  return $requirements;
}

see new patch and interdiff.txt

This patch should be included in the 1.0 release

Checking patch field_collection.install...
Hunk #1 succeeded at 98 (offset 6 lines).

Checking patch includes/translation.handler.field_collection_item.inc...
error: while searching for:
    // language.
    if (($host_entity_type = $this->entity->hostEntityType()) && entity_translation_enabled($host_entity_type) && ($host_entity = $this->entity->hostEntity())) {
      $handler = $this->factory->getHandler($host_entity_type, $host_entity);
      $langcode = $handler->getFormLanguage();
    }
    // If the host entity is not translatable, use the default language
    // fallback.

error: patch failed: includes/translation.handler.field_collection_item.inc:42
error: includes/translation.handler.field_collection_item.inc: patch does not apply

appears the patch needs a reroll.

related code no longer found, appears that field collections changed completely it's approach to translation.