Trying to install platform master, by using:
php -d memory_limit=-1 composer.phar create-project --prefer-dist --keep-vcs --no-dev ezsystems/ezplatform ezpmaster 'dev-master'
at the end, after the assetic dump, I get the following error:

> Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::installRequirementsFile
Could not open input file: dump-autoload
Script @composer dump-autoload --optimize handling the post-create-project-cmd event returned with error code 1

Note: the installation seems usable afterwards, but the error itself may have had unpredicted results and consequences and deem the installation untrustworthy to use.