diff --git a/.travis.yml b/.travis.yml
index 8034fb316a..f2b7ed7df8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -243,12 +243,12 @@ install:
           tfold 'composer update' $COMPOSER_UP
           tfold 'phpunit install' ./phpunit install
           if [[ $deps = high ]]; then
-              echo "$COMPONENTS" | parallel --gnu -j10% "tfold {} 'cd {} && $COMPOSER_UP && $PHPUNIT_X$LEGACY'"
+              echo "$COMPONENTS" | parallel --gnu "tfold {} 'cd {} && $COMPOSER_UP && $PHPUNIT_X$LEGACY'"
           elif [[ $deps = low ]]; then
               [[ -e ~/php-ext/composer-lowest.lock.tar ]] && tar -xf ~/php-ext/composer-lowest.lock.tar
               tar -cf ~/php-ext/composer-lowest.lock.tar --files-from /dev/null
               php .github/rm-invalid-lowest-lock-files.php $COMPONENTS
-              echo "$COMPONENTS" | parallel --gnu -j10% "tfold {} 'cd {} && ([ -e composer.lock ] && ${COMPOSER_UP/update/install} || $COMPOSER_UP --prefer-lowest --prefer-stable) && $PHPUNIT_X'"
+              echo "$COMPONENTS" | parallel --gnu "tfold {} 'cd {} && ([ -e composer.lock ] && ${COMPOSER_UP/update/install} || $COMPOSER_UP --prefer-lowest --prefer-stable) && $PHPUNIT_X'"
               echo "$COMPONENTS" | xargs -n1 -I{} tar --append -f ~/php-ext/composer-lowest.lock.tar {}/composer.lock
           else
               echo "$COMPONENTS" | parallel --gnu "tfold {} $PHPUNIT_X {}"
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php
index c7ecfd4b71..b370c177c8 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ValidateEnvPlaceholdersPassTest.php
@@ -399,7 +399,7 @@ class ConfigurationWithArrayNodeRequiringOneElement implements ConfigurationInte
     public function getConfigTreeBuilder()
     {
         $treeBuilder = new TreeBuilder('env_extension');
-        $treeBuilder
+        $treeBuilder->getRootNode()
             ->children()
                 ->arrayNode('nodes')
                     ->isRequired()
diff --git a/src/Symfony/Component/Validator/Mapping/Loader/PropertyInfoLoader.php b/src/Symfony/Component/Validator/Mapping/Loader/PropertyInfoLoader.php
index df3878d6e2..7ddd534275 100644
--- a/src/Symfony/Component/Validator/Mapping/Loader/PropertyInfoLoader.php
+++ b/src/Symfony/Component/Validator/Mapping/Loader/PropertyInfoLoader.php
@@ -60,6 +60,10 @@ final class PropertyInfoLoader implements LoaderInterface
                 continue;
             }
 
+            if (!property_exists($className, $property)) {
+                continue;
+            }
+
             $types = $this->typeExtractor->getTypes($className, $property);
             if (null === $types) {
                 continue;
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/PropertyInfoLoaderEntity.php b/src/Symfony/Component/Validator/Tests/Fixtures/PropertyInfoLoaderEntity.php
index 42f048c5d8..5f2a37179d 100644
--- a/src/Symfony/Component/Validator/Tests/Fixtures/PropertyInfoLoaderEntity.php
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/PropertyInfoLoaderEntity.php
@@ -48,4 +48,8 @@ class PropertyInfoLoaderEntity
     public $alreadyPartiallyMappedCollection;
 
     public $readOnly;
+
+    public function setNonExistentField()
+    {
+    }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/Loader/PropertyInfoLoaderTest.php b/src/Symfony/Component/Validator/Tests/Mapping/Loader/PropertyInfoLoaderTest.php
index 71b2691ee5..f87b19f795 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/Loader/PropertyInfoLoaderTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/Loader/PropertyInfoLoaderTest.php
@@ -46,6 +46,7 @@ class PropertyInfoLoaderTest extends TestCase
                 'alreadyMappedNotBlank',
                 'alreadyPartiallyMappedCollection',
                 'readOnly',
+                'nonExistentField',
             ])
         ;
         $propertyInfoStub