diff --git a/core/includes/common.inc b/core/includes/common.inc
index 4f72021..2c2bb87 100644
--- a/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -283,6 +283,11 @@ function drupal_get_profile() {
  * @param $breadcrumb
  *   Array of links, starting with "home" and proceeding up to but not including
  *   the current page.
+ *
+ * @deprecated This will be removed in 8.0.  Instead, register a new breadcrumb
+ *   builder service.
+ *
+ * @see Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface
  */
 function drupal_set_breadcrumb($breadcrumb = NULL) {
   $stored_breadcrumb = &drupal_static(__FUNCTION__);
@@ -295,6 +300,11 @@ function drupal_set_breadcrumb($breadcrumb = NULL) {
 
 /**
  * Gets the breadcrumb trail for the current page.
+ *
+ * @deprecated This will be removed in 8.0.  Instead, register a new breadcrumb
+ *   builder service.
+ *
+ * @see Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface
  */
 function drupal_get_breadcrumb() {
   $breadcrumb = drupal_set_breadcrumb();
diff --git a/core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php b/core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php
index c0d3879..c3d4c36 100644
--- a/core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php
+++ b/core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php
@@ -17,7 +17,7 @@
   /**
    * Build the breadcrumb.
    *
-   * @param \Symfony\Component\HttpFoundation\ParameterBag $attributes
+   * @param array $attributes
    *   Attributes representing the current page.
    *
    * @return array|FALSE|NULL
@@ -25,6 +25,6 @@
    *   FALSE, to suppress breadcrumbs on this page, or
    *   NULL, to let other builders decide.
    */
-  public function build(ParameterBag $attributes);
+  public function build(array $attributes);
 
 }
diff --git a/core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php b/core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php
index 330b84d..6d015e8 100644
--- a/core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php
+++ b/core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php
@@ -47,17 +47,9 @@ public function addBuilder(BreadcrumbBuilderInterface $builder, $priority) {
   }
 
   /**
-   * Implements Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface::build().
-   *
-   * @param \Symfony\Component\HttpFoundation\ParameterBag $attributes
-   *   Attributes representing the current page.
-   *
-   * @return array
-   *   An array of rendered breadcrumb links, or
-   *   an empty array(), to suppress breadcrumbs on this page.
-   *   (This implementation will never return NULL).
+   * {@inheritdoc}
    */
-  public function build(ParameterBag $attributes) {
+  public function build(array $attributes) {
     // Call the build method of registered breadcrumb builders,
     // until one of them returns something other than NULL.
     foreach ($this->getSortedBuilders() as $builder) {
diff --git a/core/modules/forum/forum.services.yml b/core/modules/forum/forum.services.yml
index ff9f695..19033e8 100644
--- a/core/modules/forum/forum.services.yml
+++ b/core/modules/forum/forum.services.yml
@@ -1,5 +1,6 @@
 services:
   forum.breadcrumb:
     class: Drupal\forum\ForumBreadcrumbBuilder
+    arguments: ['@plugin.manager.entity', '@config.factory']
     tags:
       - { name: breadcrumb_builder, priority: 1001 }
diff --git a/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php b/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php
index f6c451c..fedb5f1 100644
--- a/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php
+++ b/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php
@@ -7,21 +7,51 @@
 
 namespace Drupal\forum;
 
-use Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface;
 use Symfony\Component\HttpFoundation\ParameterBag;
 
+use Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface;
+use Drupal\Core\Config\ConfigFactory;
+use Drupal\Core\Entity\EntityManager;
+
 /**
  * Class to define the forum breadcrumb builder.
  */
 class ForumBreadcrumbBuilder implements BreadcrumbBuilderInterface {
 
   /**
+   * Configuration object for this builder.
+   *
+   * @var ;Drupal\Core\Config\Config
+   */
+  protected $config;
+
+  /**
+   * Stores the Entity manager.
+   *
+   * @var \Drupal\Core\Entity\EntityManager
+   */
+  protected $entityManager;
+
+  /**
+   * Constructs a new ForumBreadcrumbBuilder.
+   *
+   * @param \Drupal\Core\Config\ConfigFactory $configFactory
+   *   The configuration factory.
+   */
+  public function __construct(EntityManager $entity_manager, ConfigFactory $configFactory) {
+    $this->entityManager = $entity_manager;
+    $this->config = $configFactory->get('forum.settings');
+  }
+
+  /**
    * {@inheritdoc}
    */
-  public function build(ParameterBag $attributes) {
+  public function build(array $attributes) {
 
-    if ($attributes->has('drupal_menu_item')) {
-      $item = $attributes->get('drupal_menu_item');
+    // @todo This only works for legacy routes. Once node/% and forum/% are
+    // converted to the new router this code will need to be updated.
+    if (isset($attributes['drupal_menu_item'])) {
+      $item = $attributes['drupal_menu_item'];
       switch ($item['path']) {
 
         case 'node/%':
@@ -51,8 +81,8 @@ public function build(ParameterBag $attributes) {
    * Builds the breadcrumb for a forum post page.
    */
   protected function forumPostBreadcrumb($node) {
-    $config = config('forum.settings');
-    $vocabulary = entity_load('taxonomy_vocabulary', $config->get('vocabulary'));
+    $vocabularies = $this->entityManager->getStorageController('taxonomy_vocabulary')->load(array($this->config->get('vocabulary')));
+    $vocabulary = current($vocabularies);
 
     $breadcrumb[] = l(t('Home'), NULL);
     $breadcrumb[] = l($vocabulary->name, 'forum');
@@ -69,8 +99,8 @@ protected function forumPostBreadcrumb($node) {
    * Builds the breadcrumb for a forum term page.
    */
   protected function forumTermBreadcrumb($term) {
-    $config = config('forum.settings');
-    $vocabulary = entity_load('taxonomy_vocabulary', $config->get('vocabulary'));
+    $vocabularies = $this->entityManager->getStorageController('taxonomy_vocabulary')->load(array($this->config->get('vocabulary')));
+    $vocabulary = current($vocabularies);
 
     $breadcrumb[] = l(t('Home'), NULL);
     if ($term->tid) {
diff --git a/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkBreadcrumbBuilder.php b/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkBreadcrumbBuilder.php
index c0ea0e4..5814db5 100644
--- a/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkBreadcrumbBuilder.php
+++ b/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkBreadcrumbBuilder.php
@@ -18,7 +18,7 @@ class MenuLinkBreadcrumbBuilder implements BreadcrumbBuilderInterface {
   /**
    * {@inheritdoc}
    */
-  public function build(ParameterBag $attributes) {
+  public function build(array $attributes) {
     // @todo Rewrite the implementation.
     $breadcrumb = menu_get_active_breadcrumb();
     if (is_array($breadcrumb)) {
diff --git a/core/modules/system/lib/Drupal/system/LegacyBreadcrumbBuilder.php b/core/modules/system/lib/Drupal/system/LegacyBreadcrumbBuilder.php
index 4224119..7b6fc7c 100644
--- a/core/modules/system/lib/Drupal/system/LegacyBreadcrumbBuilder.php
+++ b/core/modules/system/lib/Drupal/system/LegacyBreadcrumbBuilder.php
@@ -13,6 +13,11 @@
 /**
  * Class to define the legacy breadcrumb builder.
  *
+ * @deprecated This will be removed in 8.0.  Instead, register a new breadcrumb
+ *   builder service.
+ *
+ * @see Drupal\Core\Breadcrumb\BreadcrumbBuilderInterface
+ *
  * This breadcrumb builder implements legacy support for the
  * drupal_set_breadcrumb() mechanic.
  * Remove this once drupal_set_breadcrumb() has been eliminated.
@@ -22,7 +27,7 @@ class LegacyBreadcrumbBuilder implements BreadcrumbBuilderInterface {
   /**
    * {@inheritdoc}
    */
-  public function build(ParameterBag $attributes) {
+  public function build(array $attributes) {
     $breadcrumb = drupal_set_breadcrumb();
     if (is_array($breadcrumb)) {
       // $breadcrumb is expected to be an array of rendered breadcrumb links.
diff --git a/core/modules/system/lib/Drupal/system/Plugin/Block/SystemBreadcrumbBlock.php b/core/modules/system/lib/Drupal/system/Plugin/Block/SystemBreadcrumbBlock.php
index d99698f..b678eb6 100644
--- a/core/modules/system/lib/Drupal/system/Plugin/Block/SystemBreadcrumbBlock.php
+++ b/core/modules/system/lib/Drupal/system/Plugin/Block/SystemBreadcrumbBlock.php
@@ -28,7 +28,7 @@ class SystemBreadcrumbBlock extends BlockBase {
   protected function blockBuild() {
     $breadcrumb_manager = \Drupal::service('breadcrumb');
     $request = \Drupal::service('request');
-    $breadcrumb = $breadcrumb_manager->build($request->attributes);
+    $breadcrumb = $breadcrumb_manager->build($request->attributes->all());
     if (!empty($breadcrumb)) {
       // $breadcrumb is expected to be an array of rendered breadcrumb links.
       return array(