Can not build debian package of gnome-shell

Binary package hint: gnome-shell

i tried to build a dbian package of gnome-shell, but that does not work:

1) bzr branch lp:ubuntu/maverick/gnome-shell
2) cd gnome-shell
3) dpkg-buildpackage -us -uc -rfakeroot

Error is:

dpkg-buildpackage: exportiere CFLAGS aus dpkg-buildflags (Quelle: vendor): -g -O2
dpkg-buildpackage: exportiere CPPFLAGS aus dpkg-buildflags (Quelle: vendor):
dpkg-buildpackage: exportiere CXXFLAGS aus dpkg-buildflags (Quelle: vendor): -g -O2
dpkg-buildpackage: exportiere FFLAGS aus dpkg-buildflags (Quelle: vendor): -g -O2
dpkg-buildpackage: exportiere LDFLAGS aus dpkg-buildflags (Quelle: vendor): -Wl,-Bsymbolic-functions
dpkg-buildpackage: Quellpaket gnome-shell
dpkg-buildpackage: Quellversion 2.31.2-1ubuntu1
dpkg-buildpackage: Quellen geändert durch Sebastien Bacher <email address hidden>
dpkg-buildpackage: Host-Architektur i386
 fakeroot debian/rules clean
test -x debian/rules
dh_testroot
rm -f debian/stamp-makefile-build debian/stamp-makefile-install
GCONF_DISABLE_MAKEFILE_SCHEMA_INSTALL=1 /usr/bin/make -C . -k distclean
make[1]: Betrete Verzeichnis '/home/tom/devel/ubuntu/gnome-shell'
make[1]: *** Keine Regel, um »distclean« zu erstellen.
make[1]: Verlasse Verzeichnis '/home/tom/devel/ubuntu/gnome-shell'
make: [makefile-clean] Fehler 2 (ignoriert)
rm -f debian/stamp-autotools
rmdir --ignore-fail-on-non-empty .
rmdir: konnte „.“ nicht entfernen: Invalid argument
make: [makefile-clean] Fehler 1 (ignoriert)
for i in ./config/config.guess ./config/config.sub ; do \
  if test -e $i.cdbs-orig ; then \
   mv $i.cdbs-orig $i ; \
  fi ; \
 done
dh_clean
rm -f debian/stamp-autotools-files
rm -f debian/cdbs-install-list debian/cdbs-package-list debian/stamp-copyright-check debian/stamp-buildinfo
test -d . && cd . && \
   rm -f intltool-extract intltool-merge intltool-update po/.intltool-merge-cache; \
   if test -d doc; then find doc -name '*.omf.out' -exec rm -f \{\} \; ; fi; \
   if test -d help; then find help -name '*.omf.out' -exec rm -f \{\} \; ; fi
{ cat /usr/share/gnome-pkg-tools/control.header ; \
   sed "s/@GNOME_TEAM@/Debian GNOME Maintainers <email address hidden>, Gustavo Noronha Silva <email address hidden>, Josselin Mouette <email address hidden>/" debian/control.in ; } \
 > debian/control
 dpkg-source -b gnome-shell
dpkg-source: Fehler: kann nicht mit Quellformat »3.0 (quilt)« bauen: keine orig.tar-Datei gefunden
dpkg-buildpackage: Fehler: dpkg-source -b gnome-shell gab Fehler-Exitstatus 255
tom@zitrone:~/devel/ubuntu/gnome-shell$ LANG=C dpkg-buildpackage -us -uc -rfakeroot
dpkg-buildpackage: export CFLAGS from dpkg-buildflags (origin: vendor): -g -O2
dpkg-buildpackage: export CPPFLAGS from dpkg-buildflags (origin: vendor):
dpkg-buildpackage: export CXXFLAGS from dpkg-buildflags (origin: vendor): -g -O2
dpkg-buildpackage: export FFLAGS from dpkg-buildflags (origin: vendor): -g -O2
dpkg-buildpackage: export LDFLAGS from dpkg-buildflags (origin: vendor): -Wl,-Bsymbolic-functions
dpkg-buildpackage: source package gnome-shell
dpkg-buildpackage: source version 2.31.2-1ubuntu1
dpkg-buildpackage: source changed by Sebastien Bacher <email address hidden>
dpkg-buildpackage: host architecture i386
 fakeroot debian/rules clean
test -x debian/rules
dh_testroot
rm -f debian/stamp-makefile-build debian/stamp-makefile-install
GCONF_DISABLE_MAKEFILE_SCHEMA_INSTALL=1 /usr/bin/make -C . -k distclean
make[1]: Entering directory `/home/tom/devel/ubuntu/gnome-shell'
make[1]: *** No rule to make target `distclean'.
make[1]: Leaving directory `/home/tom/devel/ubuntu/gnome-shell'
make: [makefile-clean] Error 2 (ignored)
rm -f debian/stamp-autotools
rmdir --ignore-fail-on-non-empty .
rmdir: failed to remove `.': Invalid argument
make: [makefile-clean] Error 1 (ignored)
for i in ./config/config.guess ./config/config.sub ; do \
  if test -e $i.cdbs-orig ; then \
   mv $i.cdbs-orig $i ; \
  fi ; \
 done
dh_clean
rm -f debian/stamp-autotools-files
rm -f debian/cdbs-install-list debian/cdbs-package-list debian/stamp-copyright-check debian/stamp-buildinfo
test -d . && cd . && \
   rm -f intltool-extract intltool-merge intltool-update po/.intltool-merge-cache; \
   if test -d doc; then find doc -name '*.omf.out' -exec rm -f \{\} \; ; fi; \
   if test -d help; then find help -name '*.omf.out' -exec rm -f \{\} \; ; fi
{ cat /usr/share/gnome-pkg-tools/control.header ; \
   sed "s/@GNOME_TEAM@/Debian GNOME Maintainers <email address hidden>, Gustavo Noronha Silva <email address hidden>, Josselin Mouette <email address hidden>/" debian/control.in ; } \
 > debian/control
 dpkg-source -b gnome-shell
dpkg-source: error: can't build with source format '3.0 (quilt)': no orig.tar file found
dpkg-buildpackage: error: dpkg-source -b gnome-shell gave error exit status 255

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: gnome-shell 2.31.2-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-11.16-generic 2.6.35-rc5
Uname: Linux 2.6.35-11-generic i686
Architecture: i386
Date: Wed Jul 28 19:02:22 2010
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100427.1)
ProcEnviron:
 LANG=de_DE.utf8
 SHELL=/bin/bash
SourcePackage: gnome-shell