Uso Symfony 3.0.6, Sontata Admin Bundle 3.0.0 y Doctrine ORM Admin Bundle en dev-master. El paquete de usuario no funciona incluso con dev-master. ¿Ya existe una solución para Symfony 3.x?

Your requirements could not be resolved to an installable set of 
packages.

Problem 1
  - Conclusion: remove symfony/symfony v3.0.6
  - Conclusion: don't install symfony/symfony v3.0.6
  - Conclusion: don't install symfony/symfony v3.0.5
  - Conclusion: don't install symfony/symfony v3.0.4
  - Conclusion: don't install symfony/symfony v3.0.3
  - Installation request for sonata-project/user-bundle dev-master ->
satisfiable by sonata-project/user-bundle[dev-master].
  - Conclusion: don't install symfony/symfony v3.0.2
  - Conclusion: don't install symfony/symfony v3.0.1
  - sonata-project/user-bundle dev-master requires symfony/form ^2.3 -> 
satisfiable by symfony/form[.....