diff -u b/core/modules/user/src/Tests/UserBlocksTest.php b/core/modules/user/src/Tests/UserBlocksTest.php
--- b/core/modules/user/src/Tests/UserBlocksTest.php
+++ b/core/modules/user/src/Tests/UserBlocksTest.php
@@ -72,7 +72,7 @@
     $edit['name'] = $this->randomMachineName();
     $edit['pass'] = $this->randomMachineName();
     $this->drupalPostForm('node', $edit, t('Log in'));
-    $this->assertText(t('Unrecognized username or password.'));
+    $this->assertNoRaw('<a href="#edit-name">Username</a>', t('Unrecognized username or password.'));
 
     // Create a user with some permission that anonymous users lack.
     $user = $this->drupalCreateUser(array('administer permissions'));