Problems with Tor Browser testsuite and Xdummy on Fedora 21
The Tor Browser test suite starts an Xorg server with a dummy driver to run the tests inside it. This works fine except on Fedora 21 where killing this Xorg process also exits the system Xorg server.
This might be related to Xorg and systemd-logind integration: https://fedoraproject.org/wiki/Changes/XorgWithoutRootRights
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information