folks fails to build from source in maverick

seen in http://people.ubuntuwire.org/~lucas/ubuntu-nbs/32/folks_0.1.17-0ubuntu2_lubuntu32.buildlog
and a local rebuild

Making all in lib
make[5]: Entering directory `/build/user-folks_0.1.17-0ubuntu2-i386-kCNmID/folks-0.1.17/backends/telepathy/lib'
  CC libtp_lowlevel_la-tp-lowlevel.lo
/bin/bash ../../../libtool --silent --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../.. -pthread -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -pthread -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -pthread -I/usr/include/gee-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -pthread -I/usr/include/telepathy-1.0 -I/usr/include/dbus-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/lib/dbus-1.0/include -I../../../folks -include ../../../config.h -DPACKAGE_DATADIR=\"/usr/share/folks\" -DG_LOG_DOMAIN=\"TelepathyBackend\" -g -O2 -c -o libtp_lowlevel_la-tp-lowlevel.lo `test -f 'tp-lowlevel.c' || echo './'`tp-lowlevel.c
  CCLD libtp-lowlevel.la
  GISCAN tp-lowlevel.gir
  GEN tp-lowlevel.vapi
tp-lowlevel.gir:70.7-70.6: error: invalid closure index
Generation failed: 1 error(s), 0 warning(s)
make[5]: *** [tp-lowlevel.vapi] Error 1
make[5]: Leaving directory `/build/user-folks_0.1.17-0ubuntu2-i386-kCNmID/folks-0.1.17/backends/telepathy/lib'
make[4]: *** [all-recursive] Error 1
make[4]: Leaving directory `/build/user-folks_0.1.17-0ubuntu2-i386-kCNmID/folks-0.1.17/backends/telepathy'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/build/user-folks_0.1.17-0ubuntu2-i386-kCNmID/folks-0.1.17/backends'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/build/user-folks_0.1.17-0ubuntu2-i386-kCNmID/folks-0.1.17'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/build/user-folks_0.1.17-0ubuntu2-i386-kCNmID/folks-0.1.17'
dh_auto_build: make -j1 returned exit code 2
make: *** [build] Error 2