Hello,
The MR tor-browser-build!579 has just been merged to main and
maint-12.0. It includes some changes that will cause everything to be
rebuilt, so if you have been building tor-browser before and are not
planning to rebuild old versions (or branches based on old commits), it
is a good time to remove the `out` directory as most files in there are
not going to be used for new builds.
Nicolas