Hi, it seems that the unstable bash is less tolerant of redundant braces, and
treats them as part of the filename. So ut2004-ded-3369 produces:
rm: cannot remove
`/var/tmp/portage/games-server/ut2004-ded-3369/image///opt/ut2004-ded
/System/{ucc-bin-linux-amd64}': No such file or directory
rm: cannot remove
`/var/tmp/portage/games-server/ut2004-ded-3369/image///opt/ut2004-ded
/System/{ucc-bin-macosx}': No such file or directory
Enclosed is a patch to remove the redundant braces.
The original thread is:
http://forums.gentoo.org/viewtopic-t-527228.html