ladvd version 0.9.2-1 failed to build in oneiric

ladvd version 0.9.2-1 failed to build in oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2698056

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/2698056/+files/buildlog_ubuntu-oneiric-amd64.ladvd_0.9.2-1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 628 lines into the build log:

 /bin/bash ../libtool --tag=CC --mode=compile x86_64-linux-gnu-gcc -std=gnu99 -DHAVE_CONFIG_H -I. -Wall -Werror -Wformat -Wformat-security -D_FORTIFY_SOURCE=2 -fno-delete-null-pointer-checks -fstack-protector -fPIE -g -O2 -MT proto/cdp.lo -MD -MP -MF $depbase.Tpo -c -o proto/cdp.lo proto/cdp.c &&\
 mv -f $depbase.Tpo $depbase.Plo
libtool: compile: x86_64-linux-gnu-gcc -std=gnu99 -DHAVE_CONFIG_H -I. -Wall -Werror -Wformat -Wformat-security -D_FORTIFY_SOURCE=2 -fno-delete-null-pointer-checks -fstack-protector -g -O2 -MT proto/cdp.lo -MD -MP -MF proto/.deps/cdp.Tpo -c proto/cdp.c -fPIC -DPIC -o proto/.libs/cdp.o
proto/cdp.c: In function 'cdp_decode':
proto/cdp.c:264:11: error: variable 'tlv' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

make[3]: *** [proto/cdp.lo] Error 1
make[3]: Leaving directory `/build/buildd/ladvd-0.9.2/src'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/build/buildd/ladvd-0.9.2/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/build/buildd/ladvd-0.9.2'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110821-1411
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/ladvd-0.9.2