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.

Author: nicolas-grekas

PropertyAccessor.php

@@ -211,7 +211,7 @@ private static function throwInvalidArgumentException(string $message, array $tr
         if (preg_match('/^\S+::\S+\(\): Argument #\d+ \(\$\S+\) must be of type (\S+), (\S+) given/', $message, $matches)) {
             list(, $expectedType, $actualType) = $matches;
 
-            throw new InvalidArgumentException(sprintf('Expected argument of type "%s", "%s" given.', $expectedType, 'NULL' === $actualType ? 'null' : $actualType), 0, $previous);
+            throw new InvalidArgumentException(sprintf('Expected argument of type "%s", "%s" given at property path "%s".', $expectedType, 'NULL' === $actualType ? 'null' : $actualType, $propertyPath), 0, $previous);
         }
     }