libpam-chroot version 0.9-4ubuntu1 failed to build in oneiric

libpam-chroot version 0.9-4ubuntu1 failed to build in oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2702357

Details about the rebuild:
http://people.ubuntuwire.org/~wgrant/rebuild-ftbfs-test/test-rebuild-20110816-oneiric.html

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2702357/+files/buildlog_ubuntu-oneiric-amd64.libpam-chroot_0.9-4ubuntu1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 244 lines into the build log:

make[1]: Leaving directory `/build/buildd/libpam-chroot-0.9'
dh_clean
 debian/rules build
dh_testdir
/usr/bin/make
make[1]: Entering directory `/build/buildd/libpam-chroot-0.9'
gcc -fPIC -O2 -Wall -Werror -pedantic -fno-stack-protector -I. -c -o pam_chroot.o pam_chroot.c
pam_chroot.c: In function '_pam_do_chroot':
pam_chroot.c:642:8: error: variable 'name' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

make[1]: *** [pam_chroot.o] Error 1
make[1]: Leaving directory `/build/buildd/libpam-chroot-0.9'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110821-2143
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/libpam-chroot-0.9