* commit '9c76a7b3e85ce7056071ac8627c8d675cc5c1599': Prevent user ID reuse until after reboot. Warn user when build fingerprints differ.
* commit '9c76a7b3e85ce7056071ac8627c8d675cc5c1599': Prevent user ID reuse until after reboot. Warn user when build fingerprints differ.