Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

core/modules/aggregator/config/optional/views.view.aggregator_rss_feed.yml

@@ -59,10 +59,10 @@ display:
             offset: false
             offset_label: Offset
           tags:
-            previous: '‹ previous'
-            next: 'next ›'
-            first: '« first'
-            last: 'last »'
+            previous: '‹ Previous'
+            next: 'Next ›'
+            first: '« First'
+            last: 'Last »'
           quantity: 9
       style:
         type: default
@@ -129,6 +129,14 @@ display:
       empty: {  }
       relationships: {  }
       arguments: {  }
+      display_extenders: {  }
+    cache_metadata:
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - url.query_args
+        - user.permissions
+      cacheable: false
   feed_items:
     display_plugin: feed
     id: feed_items
@@ -139,3 +147,10 @@ display:
       display_description: ''
       defaults:
         arguments: true
+      display_extenders: {  }
+    cache_metadata:
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - user.permissions
+      cacheable: false

core/modules/aggregator/config/optional/views.view.aggregator_sources.yml

@@ -63,10 +63,10 @@ display:
             offset: false
             offset_label: Offset
           tags:
-            previous: '‹ previous'
-            next: 'next ›'
-            first: '« first'
-            last: 'last »'
+            previous: '‹ Previous'
+            next: 'Next ›'
+            first: '« First'
+            last: 'Last »'
           quantity: 9
       style:
         type: default
@@ -141,7 +141,9 @@ display:
       contexts:
         - 'languages:language_content'
         - 'languages:language_interface'
-      cacheable: false
+        - url.query_args
+        - user.permissions
+      max-age: 0
   feed_1:
     display_plugin: feed
     id: feed_1
@@ -398,7 +400,8 @@ display:
       contexts:
         - 'languages:language_content'
         - 'languages:language_interface'
-      cacheable: false
+        - user.permissions
+      max-age: 0
   page_1:
     display_plugin: page
     id: page_1
@@ -418,4 +421,6 @@ display:
       contexts:
         - 'languages:language_content'
         - 'languages:language_interface'
-      cacheable: false
+        - url.query_args
+        - user.permissions
+      max-age: 0