lua-curl version 0.3.0-3 failed to build on i386

lua-curl version 0.3.0-3 failed to build on i386
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2403539

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2403539/+files/buildlog_ubuntu-natty-i386.lua-curl_0.3.0-3_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 1098 lines into the build log:

  > curl_ftpmethods.h
make[3]: Leaving directory `/build/buildd/lua-curl-0.3.0'
pre-all-hook
getconf: Unrecognized variable `LFS_CFLGAS'
libtool --silent --tag=CC --mode=compile cc -c -g -Wall -O2 -I/usr//include/lua5.1 -o lua-curl.lo lua-curl.c
In file included from lua-curl.c:182:0:
curl_authopt.h:7:30: error: unterminated comment
lua-curl.c:183:3: error: expected '}' before '{' token
lua-curl.c:184:2: error: expected '}' before ';' token
make[2]: *** [lua-curl.lo] Error 1
make[2]: Leaving directory `/build/buildd/lua-curl-0.3.0'
make[1]: *** [all] Error 1
make[1]: Leaving directory `/build/buildd/lua-curl-0.3.0'
make: *** [debian/stamp-makefile-build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110408-1624
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/lua-curl-0.3.0