Merge branch '3.1'

* 3.1:
  [Routing] Add missing options in docblock
  [VarDumper] Fix dumping continuations
  [PropertyInfo] Fix an error in PropertyInfoCacheExtractor
  [HttpFoundation] fixed Request::getContent() reusage bug
  [Form] Skip CSRF validation on form when POST max size is exceeded
  Use try-finally where it possible
  [DependencyInjection] ContainerBuilder: Remove obsolete definitions
  Enhance the phpDoc return types so IDEs can handle the configuration tree.
  fixes
  Remove 3.0 from branch suggestions for fixes in PR template
  [Process] Strengthen Windows pipe files opening (again...)
  [Cache] Handle unserialize() failures gracefully
  Fix #19531 [Form] DateType fails parsing when midnight is not a valid time

Author: nicolas-grekas

DataCollector/DumpDataCollector.php

@@ -201,9 +201,7 @@ public function getDumps($format, $maxDepthLimit = -1, $maxItemsPerDepth = -1)
 
         foreach ($this->data as $dump) {
             $dumper->dump($dump['data']->withMaxDepth($maxDepthLimit)->withMaxItemsPerDepth($maxItemsPerDepth));
-
-            rewind($data);
-            $dump['data'] = stream_get_contents($data);
+            $dump['data'] = stream_get_contents($data, -1, 0);
             ftruncate($data, 0);
             rewind($data);
             $dumps[] = $dump;