@webmozart We have a test that fails on PHP 5.5 and 5.6, it also fails on my computer (PHP 5.5.11) see https://travis-ci.org/symfony/symfony/builds/24090008

1) Symfony\Component\Form\Tests\Extension\Core\EventListener\TrimListenerTest::testTrimUtf8 with data set "General category: Separator" (array('0020', '00A0', '1680', '180E', '2000', '2001', '2002', '2003', '2004', '2005', '2006', '2007', '2008', '2009', '200A', '2028', '2029', '202F', '205F', '3000'))
TrimListener should trim character(s): 0020, 00A0, 1680, 180E, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 200A, 2028, 2029, 202F, 205F, 3000
Failed asserting that two strings are identical.
--- Expected
+++ Actual
@@ @@
-ab
-cd
+᠎           

  　ab
+cd   ᠎
/home/travis/build/symfony/symfony/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/TrimListenerTest.php:68

That's weird as none of the test or the listener have been changed for a while.
Are you sure about the regexp in https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Form/Extension/Core/EventListener/TrimListener.php#L33 ?

@stof I've tried to self-update PHPUnit in #10826, but it did not solve the issue

@romainneutron this is because 4.0.19 was not yet released. --self-update goes to the latest stable release in PHPUnit, not to the latest commit. The 4.0.19 phar on http://phar.phpunit.de/ is only 7 minutes old. So try again now :)

I suggest using #10826 instead as downloading a phar will be faster than running a composer installation

@stof what about your comment about openssl (#10826 (comment)), #10826 bypasses tests on 5.3

yeah, I saw it after commented here. --self-update does not fallback to non-SSL in PHPUnit as done in composer. It is a shame that Travis guys did not manage to compile PHP 5.3.3 with openssl properly.

@loicfrering do you think it's possible to add openssl to PHP 5.3.3 recipe?

closed in favor of #10826

@romainneutron we had to drop openssl on 5.3.3 due to compilation issues with the recent versions of OpenSSL.