Merge branch '5.0' into 5.1

* 5.0:
  Parse and render anonymous classes correctly on php 8
  Enable APCu for the php 8 build.
  [Process] Fix failing test on php 8.
  [HttpKernel] fix test
  Make PHP 8 green on Travis
  Revert "[Cache] allow DBAL v3"
  [PropertyAccessor] Added missing property path on php 8.
  Don't execute tests with DBAL 2.x on php 8.

Tests/ApplicationTest.php

@@ -883,7 +883,8 @@ public function testRenderAnonymousException()
         $application = new Application();
         $application->setAutoExit(false);
         $application->register('foo')->setCode(function () {
-            throw new class('') extends \InvalidArgumentException { };
+            throw new class('') extends \InvalidArgumentException {
+            };
         });
         $tester = new ApplicationTester($application);
 
@@ -893,7 +894,8 @@ public function testRenderAnonymousException()
         $application = new Application();
         $application->setAutoExit(false);
         $application->register('foo')->setCode(function () {
-            throw new \InvalidArgumentException(sprintf('Dummy type "%s" is invalid.', get_debug_type(new class() { })));
+            throw new \InvalidArgumentException(sprintf('Dummy type "%s" is invalid.', \get_class(new class() {
+            })));
         });
         $tester = new ApplicationTester($application);
 
@@ -906,7 +908,8 @@ public function testRenderExceptionStackTraceContainsRootException()
         $application = new Application();
         $application->setAutoExit(false);
         $application->register('foo')->setCode(function () {
-            throw new class('') extends \InvalidArgumentException { };
+            throw new class('') extends \InvalidArgumentException {
+            };
         });
         $tester = new ApplicationTester($application);
 
@@ -916,7 +919,8 @@ public function testRenderExceptionStackTraceContainsRootException()
         $application = new Application();
         $application->setAutoExit(false);
         $application->register('foo')->setCode(function () {
-            throw new \InvalidArgumentException(sprintf('Dummy type "%s" is invalid.', get_debug_type(new class() { })));
+            throw new \InvalidArgumentException(sprintf('Dummy type "%s" is invalid.', \get_class(new class() {
+            })));
         });
         $tester = new ApplicationTester($application);