buffy version 1.2.1-1 failed to build on i386

buffy version 1.2.1-1 failed to build on i386
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2389348

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2389348/+files/buildlog_ubuntu-natty-i386.buffy_1.2.1-1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 1616 lines into the build log:

touch debian/stamp-autotools
/usr/bin/make -C .
make[1]: Entering directory `/build/buildd/buffy-1.2.1'
/usr/bin/make all-recursive
make[2]: Entering directory `/build/buildd/buffy-1.2.1'
Making all in src
make[3]: Entering directory `/build/buildd/buffy-1.2.1/src'
g++ -DHAVE_CONFIG_H -I. -I.. -pthread -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/atk-1.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/libdrm -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pixman-1 -I/usr/include/sigc++-2.0 -I/usr/lib/sigc++-2.0/include -I/usr/include/gtkmm-2.4 -I/usr/lib/gtkmm-2.4/include -I/usr/include/atkmm-1.6 -I/usr/include/giomm-2.4 -I/usr/lib/giomm-2.4/include -I/usr/include/pangomm-1.4 -I/usr/lib/pangomm-1.4/include -I/usr/include/gtk-unix-print-2.0 -I/usr/include/gdkmm-2.4 -I/usr/lib/gdkmm-2.4/include -I/usr/include/glibmm-2.4 -I/usr/lib/glibmm-2.4/include -I/usr/include/cairomm-1.0 -I/usr/lib/cairomm-1.0/include -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -g -O2 -g -O2 -Wall -c -o buffy-Environment.o `test -f 'Environment.cc' || echo './'`Environment.cc
Environment.cc: In member function 'void Environment::spawnCommand(const std::string&)':
Environment.cc:122:60: warning: missing sentinel in function call
g++ -DHAVE_CONFIG_H -I. -I.. -pthread -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/atk-1.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/libdrm -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pixman-1 -I/usr/include/sigc++-2.0 -I/usr/lib/sigc++-2.0/include -I/usr/include/gtkmm-2.4 -I/usr/lib/gtkmm-2.4/include -I/usr/include/atkmm-1.6 -I/usr/include/giomm-2.4 -I/usr/lib/giomm-2.4/include -I/usr/include/pangomm-1.4 -I/usr/lib/pangomm-1.4/include -I/usr/include/gtk-unix-print-2.0 -I/usr/include/gdkmm-2.4 -I/usr/lib/gdkmm-2.4/include -I/usr/include/glibmm-2.4 -I/usr/lib/glibmm-2.4/include -I/usr/include/cairomm-1.0 -I/usr/lib/cairomm-1.0/include -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -g -O2 -g -O2 -Wall -c -o buffy-FolderList.o `test -f 'FolderList.cc' || echo './'`FolderList.cc
g++ -DHAVE_CONFIG_H -I. -I.. -pthread -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -I/usr/include/atk-1.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/libdrm -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pixman-1 -I/usr/include/sigc++-2.0 -I/usr/lib/sigc++-2.0/include -I/usr/include/gtkmm-2.4 -I/usr/lib/gtkmm-2.4/include -I/usr/include/atkmm-1.6 -I/usr/include/giomm-2.4 -I/usr/lib/giomm-2.4/include -I/usr/include/pangomm-1.4 -I/usr/lib/pangomm-1.4/include -I/usr/include/gtk-unix-print-2.0 -I/usr/include/gdkmm-2.4 -I/usr/lib/gdkmm-2.4/include -I/usr/include/glibmm-2.4 -I/usr/lib/glibmm-2.4/include -I/usr/include/cairomm-1.0 -I/usr/lib/cairomm-1.0/include -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -g -O2 -g -O2 -Wall -c -o buffy-PrefDialog.o `test -f 'PrefDialog.cc' || echo './'`PrefDialog.cc
PrefDialog.cc: In constructor 'PrefDialog::PrefDialog(Gtk::Window&)':
PrefDialog.cc:108:78: error: call of overloaded 'ComboBox(Glib::RefPtr<Gtk::ListStore>&)' is ambiguous
/usr/include/gtkmm-2.4/gtkmm/combobox.h:145:12: note: candidates are: Gtk::ComboBox::ComboBox(bool)
/usr/include/gtkmm-2.4/gtkmm/combobox.h:137:12: note: Gtk::ComboBox::ComboBox(const Glib::RefPtr<Gtk::TreeModel>&)
PrefDialog.cc:108:79: error: 'manage' was not declared in this scope
make[3]: *** [buffy-PrefDialog.o] Error 1
make[3]: Leaving directory `/build/buildd/buffy-1.2.1/src'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/build/buildd/buffy-1.2.1'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/build/buildd/buffy-1.2.1'
make: *** [debian/stamp-makefile-build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110403-1003
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/buffy-1.2.1