PHPUnit's units of code are now namespaced See https://github.com/sebastianbergmann/phpunit/wiki/Release-Announcement-for-PHPUnit-6.0.0#backwards-compatibility-issues
Fix i386 test. Test fails on 32-bit plarform due to this problem in PHP: https://externals.io/message/112808. There is no way to fix it in this package, thus workaround it.