gem version 1:0.92.3-1ubuntu1 failed to build on i386

gem version 1:0.92.3-1ubuntu1 failed to build on i386
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2393390

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2393390/+files/buildlog_ubuntu-natty-i386.gem_1%3A0.92.3-1ubuntu1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 2437 lines into the build log:

g++ -c -I/usr/include/lqt -fopenmp -I/usr/include/ImageMagick -I/usr/include/lqt -I/usr/include/avifile-0.7 -I/usr/include/freetype2 -I/usr/include/FTGL -I.. -I/usr/include/FTGL -I/usr/include/freetype2 -g -O2 -fPIC -freg-struct-return -O3 -falign-loops -falign-functions -falign-jumps -funroll-loops -ffast-math -mmmx -g -O2 pix_texture.cpp -o ../Objects/pix_texture.o
g++ -c -I/usr/include/lqt -fopenmp -I/usr/include/ImageMagick -I/usr/include/lqt -I/usr/include/avifile-0.7 -I/usr/include/freetype2 -I/usr/include/FTGL -I.. -I/usr/include/FTGL -I/usr/include/freetype2 -g -O2 -fPIC -freg-struct-return -O3 -falign-loops -falign-functions -falign-jumps -funroll-loops -ffast-math -mmmx -g -O2 pix_threshold.cpp -o ../Objects/pix_threshold.o
g++ -c -I/usr/include/lqt -fopenmp -I/usr/include/ImageMagick -I/usr/include/lqt -I/usr/include/avifile-0.7 -I/usr/include/freetype2 -I/usr/include/FTGL -I.. -I/usr/include/FTGL -I/usr/include/freetype2 -g -O2 -fPIC -freg-struct-return -O3 -falign-loops -falign-functions -falign-jumps -funroll-loops -ffast-math -mmmx -g -O2 pix_threshold_bernsen.cpp -o ../Objects/pix_threshold_bernsen.o
g++ -c -I/usr/include/lqt -fopenmp -I/usr/include/ImageMagick -I/usr/include/lqt -I/usr/include/avifile-0.7 -I/usr/include/freetype2 -I/usr/include/FTGL -I.. -I/usr/include/FTGL -I/usr/include/freetype2 -g -O2 -fPIC -freg-struct-return -O3 -falign-loops -falign-functions -falign-jumps -funroll-loops -ffast-math -mmmx -g -O2 pix_video.cpp -o ../Objects/pix_video.o
In file included from pix_video.cpp:18:0:
../Pixes/videoV4L.h:43:29: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
make[3]: *** [pix_video.o] Error 1
make[3]: Leaving directory `/build/buildd/gem-0.92.3/src/Pixes'
make[2]: *** [Pixes] Error 2
make[2]: Leaving directory `/build/buildd/gem-0.92.3/src'
make[1]: *** [override_dh_auto_build] Error 2
make[1]: Leaving directory `/build/buildd/gem-0.92.3'
make: *** [binary] Error 2
dpkg-buildpackage: error: /usr/bin/fakeroot debian/rules binary gave error exit status 2
******************************************************************************
Build finished at 20110408-1914
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/gem-0.92.3