Merge branch '3.4' into 4.3

* 3.4:
  [Debug] fix ClassNotFoundFatalErrorHandler
  [Dotenv] Fixed infinite loop with missing quote followed by quoted value
  [TwigBridge] button_widget now has its title attr translated even if its label = null or false
  [PhpUnitBridge] When using phpenv + phpenv-composer plugin, composer executable is wrapped into a bash script
  [Security] Prevent canceled remember-me cookie from being accepted
  [FrameworkBundle][TranslationUpdateCommand] Do not output positive feedback on stderr

Author: nicolas-grekas

RememberMe/AbstractRememberMeServices.php

@@ -93,6 +93,10 @@ public function getSecret()
      */
     final public function autoLogin(Request $request): ?TokenInterface
     {
+        if (($cookie = $request->attributes->get(self::COOKIE_ATTR_NAME)) && null === $cookie->getValue()) {
+            return null;
+        }
+
         if (null === $cookie = $request->cookies->get($this->options['name'])) {
             return null;
         }

Tests/RememberMe/AbstractRememberMeServicesTest.php

@@ -39,6 +39,17 @@ public function testAutoLoginReturnsNullWhenNoCookie()
         $this->assertNull($service->autoLogin(new Request()));
     }
 
+    public function testAutoLoginReturnsNullAfterLoginFail()
+    {
+        $service = $this->getService(null, ['name' => 'foo', 'path' => null, 'domain' => null]);
+
+        $request = new Request();
+        $request->cookies->set('foo', 'foo');
+
+        $service->loginFail($request);
+        $this->assertNull($service->autoLogin($request));
+    }
+
     /**
      * @group legacy
      */