diff -u b/core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php b/core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php
--- b/core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php
+++ b/core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php
@@ -151,10 +151,10 @@
    * Tests the ::cronRun() method.
    */
   public function testCronRun() {
-    $last_cron_time = $this->container->get('state')->get('system.cron_last');
+    $last_cron_time = \Drupal::state()->get('system.cron_last');
     $this->cronRun();
     $this->assertSession()->statusCodeEquals(204);
-    $next_cron_time = $this->container->get('state')->get('system.cron_last');
+    $next_cron_time = \Drupal::state()->get('system.cron_last');
 
     $this->assertGreaterThan($last_cron_time, $next_cron_time);
   }
diff -u b/core/tests/Drupal/Tests/Traits/Core/CronRunTrait.php b/core/tests/Drupal/Tests/Traits/Core/CronRunTrait.php
--- b/core/tests/Drupal/Tests/Traits/Core/CronRunTrait.php
+++ b/core/tests/Drupal/Tests/Traits/Core/CronRunTrait.php
@@ -11,7 +11,7 @@
    * Runs cron on the test site.
    */
   protected function cronRun() {
-    $this->drupalGet('cron/' . $this->container->get('state')->get('system.cron_key'));
+    $this->drupalGet('cron/' . \Drupal::state()->get('system.cron_key'));
   }
 
 }