recipe with quilt patch doesn't build - Patch debian/link-against-needed-libs.diff does not remove cleanly

I have a problem with launchpad recipes - recipe with quilt patch doesn't build , see https://launchpadlibrarian.net/75428258/buildlog.txt.gz
Exact error is:
Patch debian/link-against-needed-libs.diff does not remove cleanly (refresh it or enforce with -f)
make: *** [unpatch] Error 1

Recipe is simple, see https://code.launchpad.net/~baltix/+recipe/irrlicht-svn :
# bzr-builder format 0.3 deb-version {debupstream}{date}-0-{revno:packaging}
lp:~stk/stk/irrlicht
nest-part packaging lp:~baltix/stk/pkg-irrlicht debian debian

This recipe worked fine until I added patch debian/link-against-needed-libs.diff - now this patch is applied without errors during build, but at the end of build I get an error "Patch debian/link-against-needed-libs.diff does not remove cleanly", see https://launchpadlibrarian.net/75428258/buildlog.txt.gz
Committed revision 2204.
Applying quilt patches
Applying patch debian/link-against-needed-libs.diff
patching file source/Irrlicht/Makefile
Now at patch debian/link-against-needed-libs.diff
[...]
 fakeroot debian/rules clean
QUILT_PATCHES=debian/patches quilt --quiltrc /dev/null pop -a -R || test $? = 2
Patch debian/link-against-needed-libs.diff does not remove cleanly (refresh it or enforce with -f)
make: *** [unpatch] Error 1
dpkg-buildpackage: error: fakeroot debian/rules clean gave error exit status 2

I think it's launchpad bug, because this patch works fine on my computer (tested with local bzr-builder)

I've tested on my computer (Ubuntu 10.04) and this patch does apply and unapply without errors:
guest@vitas-linux:~/Desktop/recipe-1.8~svn20110718-0$ QUILT_PATCHES=debian/patches quilt --quiltrc /dev/null push -a
Applying patch debian/link-against-needed-libs.diff
patching file source/Irrlicht/Makefile
Now at patch debian/link-against-needed-libs.diff
guest@vitas-linux:~/Desktop/recipe-1.8~svn20110718-0$ QUILT_PATCHES=debian/patches quilt --quiltrc /dev/null pop -a -R
Removing patch debian/link-against-needed-libs.diff
Restoring source/Irrlicht/Makefile
No patches applied