There were 2 errors:                                                                                                                                   
                                                                                                                                                       
1) Drupal\Tests\big_pipe\FunctionalJavascript\BigPipeRegressionTest::testCommentForm_2698811                                                           
WebDriver\Exception\UnknownError: {"errorMessage":"Can't find variable: CKEDITOR","request":{"headers":{"Accept-Encoding":"gzip,deflate","Connection":"
Keep-Alive","Content-Length":"116","Content-Type":"application/json; charset=utf-8","Host":"localhost:5872","User-Agent":"Apache-HttpClient/4.5.2 (Java
/1.8.0_101)"},"httpVersion":"1.1","method":"POST","post":"{\"script\":\"return     (function(){\\n      return Object.keys(CKEDITOR.instances).length >
 0;\\n    }());;\",\"args\":[]}","url":"/execute","urlParsed":{"anchor":"","query":"","file":"execute","directory":"/","path":"/execute","relative":"/e
xecute","port":"","host":"","password":"","user":"","userInfo":"","authority":"","protocol":"","source":"/execute","queryKey":{},"chunks":["execute"]},
"urlOriginal":"/session/901f6e50-8065-11e6-8673-bfb76f394b31/execute"}}                                                                                
Build info: version: '3.0.0-beta3', revision: 'c7b525d', time: '2016-09-01 14:57:03 -0700'                                                             
System info: host: 'KL-HOME', ip: '192.168.137.2', os.name: 'Windows 10', os.arch: 'x86', os.version: '10.0', java.version: '1.8.0_101'                
Driver info: driver.version: unknown                                                                                                                   
                                                                                                                                                       
KAY\vendor\instaclick\php-webdriver\lib\WebDriver\Exception.php:155                                                                
KAY\vendor\instaclick\php-webdriver\lib\WebDriver\AbstractWebDriver.php:140                                                        
KAY\vendor\instaclick\php-webdriver\lib\WebDriver\AbstractWebDriver.php:198                                                        
KAY\vendor\instaclick\php-webdriver\lib\WebDriver\Container.php:218                                                                
KAY\vendor\behat\mink-selenium2-driver\src\Selenium2Driver.php:924                                                                 
KAY\core\tests\Drupal\FunctionalJavascriptTests\JavascriptTestBase.php:136                                                         
KAY\core\modules\big_pipe\tests\src\FunctionalJavascript\BigPipeRegressionTest.php:114                                             
                                                                                                                                                       
2) Drupal\Tests\outside_in\FunctionalJavascript\OffCanvasTest::testOffCanvasLinks                                                                      
Behat\Mink\Exception\ResponseTextException: The text "Thing 2 says hello" was not found anywhere in the text of the current page.                      
                                                                                                                                                       
KAY\vendor\behat\mink\src\WebAssert.php:787                                                                                        
KAY\vendor\behat\mink\src\WebAssert.php:262                                                                                        
KAY\core\modules\outside_in\tests\src\FunctionalJavascript\OffCanvasTest.php:45                                                    
                                                                                                                                                       
--                                                                                                                                                     
                                                                                                                                                       
There were 2 failures:                                                                                                                                 
                                                                                                                                                       
1) Drupal\Tests\outside_in\FunctionalJavascript\OutsideInBlockFormTest::testBrandingBlock                                                              
Javascript condition met:                                                                                                                              
(jQuery('#drupal-offcanvas').length > 0)                                                                                                               
Failed asserting that false is true.                                                                                                                   
                                                                                                                                                       
KAY\core\tests\Drupal\KernelTests\AssertLegacyTrait.php:31                                                                         
KAY\core\tests\Drupal\FunctionalJavascriptTests\JavascriptTestBase.php:137                                                         
KAY\core\modules\outside_in\tests\src\FunctionalJavascript\OutsideInJavascriptTestBase.php:51                                      
KAY\core\modules\outside_in\tests\src\FunctionalJavascript\OutsideInJavascriptTestBase.php:30                                      
KAY\core\modules\outside_in\tests\src\FunctionalJavascript\OutsideInBlockFormTest.php:77                                           
                                                                                                                                                       
2) Drupal\Tests\toolbar\FunctionalJavascript\ToolbarIntegrationTest::testToolbarToggling                                                               
Toolbar tray is open by default.                                                                                                                       
Failed asserting that false is true.                                                                                                                   
                                                                                                                                                       
KAY\core\tests\Drupal\KernelTests\AssertLegacyTrait.php:31                                                                         
KAY\core\modules\toolbar\tests\src\FunctionalJavascript\ToolbarIntegrationTest.php:35                                              
                                                                                                                                                       
FAILURES!                                                                                                                                              
Tests: 18, Assertions: 120, Errors: 2, Failures: 2.