This is a semi-automatic report based on the latest archive rebuild results [1].
Apologies if it reaches you in error.
Excerpt from the buildlog:
# source='src/stats.c' object='src/stats.o' libtool=no
gcc -DHAVE_CONFIG_H -I. -I./include -I./src -I./gdbus -D_FORTIFY_SOURCE=2 -I/usr/include/dbus-1.0 -I/usr/lib/i386-linux-gnu/dbus-1.0/include -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -DCONNMAN_PLUGIN_BUILTIN -DSTATEDIR=\""/var/run/connman"\" -DPLUGINDIR=\""/usr/lib/connman/plugins"\" -DSCRIPTDIR=\""/usr/lib/connman/scripts"\" -DSTORAGEDIR=\""/var/lib/connman\"" -DCONFIGDIR=\""/etc/connman\"" -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -Wall -fPIE -c -o src/stats.o src/stats.c
\
# source='src/iptables.c' object='src/iptables.o' libtool=no
gcc -DHAVE_CONFIG_H -I. -I./include -I./src -I./gdbus -D_FORTIFY_SOURCE=2 -I/usr/include/dbus-1.0 -I/usr/lib/i386-linux-gnu/dbus-1.0/include -I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include -DCONNMAN_PLUGIN_BUILTIN -DSTATEDIR=\""/var/run/connman"\" -DPLUGINDIR=\""/usr/lib/connman/plugins"\" -DSCRIPTDIR=\""/usr/lib/connman/scripts"\" -DSTORAGEDIR=\""/var/lib/connman\"" -DCONFIGDIR=\""/etc/connman\"" -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -Wall -fPIE -c -o src/iptables.o src/iptables.c
src/iptables.c: In function 'iptables_command':
src/iptables.c:1094:12: warning: passing argument 2 of 'xtables_merge_options' discards 'const' qualifier from pointer target type [enabled by default]
/usr/include/xtables.h:407:23: note: expected 'struct option *' but argument is of type 'const struct option *'
src/iptables.c:1094:12: warning: passing argument 3 of 'xtables_merge_options' from incompatible pointer type [enabled by default]
/usr/include/xtables.h:407:23: note: expected 'const struct option *' but argument is of type 'unsigned int *'
src/iptables.c:1094:12: error: too few arguments to function 'xtables_merge_options'
/usr/include/xtables.h:407:23: note: declared here
src/iptables.c:1118:7: warning: passing argument 2 of 'xtables_merge_options' discards 'const' qualifier from pointer target type [enabled by default]
/usr/include/xtables.h:407:23: note: expected 'struct option *' but argument is of type 'const struct option *'
src/iptables.c:1118:7: warning: passing argument 3 of 'xtables_merge_options' from incompatible pointer type [enabled by default]
/usr/include/xtables.h:407:23: note: expected 'const struct option *' but argument is of type 'unsigned int *'
src/iptables.c:1118:7: error: too few arguments to function 'xtables_merge_options'
/usr/include/xtables.h:407:23: note: declared here
make[2]: *** [src/iptables.o] Error 1
make[1]: *** [all] Error 2
make[1]: Leaving directory `/build/buildd/connman-0.76'
make: *** [debian/stamp-makefile-build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20120204-2230
FAILED [dpkg-buildpackage died]
The full buidlog can be found at https://launchpad.net/ubuntu/+archive/test-rebuild-20120201/+build/3142279/+files/buildlog_ubuntu-precise-i386.connman_0.76-0ubuntu2_FAILEDTOBUILD.txt.gz.
[1] http://people.ubuntuwire.org/~wgrant/rebuild-ftbfs-test/test-rebuild-20120201-precise.html
New upstream version builds, filed bug 936007.