emerald version 0.7.2-0ubuntu6 failed to build on i386

emerald version 0.7.2-0ubuntu6 failed to build on i386
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2391909

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2391909/+files/buildlog_ubuntu-natty-i386.emerald_0.7.2-0ubuntu6_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 1842 lines into the build log:

/usr/include/compiz/decoration.h:186:1: note: declared here
main.c: In function 'update_default_decorations':
main.c:2355:5: warning: passing argument 7 of 'decor_quads_to_property' makes integer from pointer without a cast
/usr/include/compiz/decoration.h:186:1: note: expected 'int' but argument is of type 'struct decor_quad_t *'
main.c:2355:5: error: too few arguments to function 'decor_quads_to_property'
/usr/include/compiz/decoration.h:186:1: note: declared here
main.c:2414:5: warning: passing argument 7 of 'decor_quads_to_property' makes integer from pointer without a cast
/usr/include/compiz/decoration.h:186:1: note: expected 'int' but argument is of type 'struct decor_quad_t *'
main.c:2414:5: error: too few arguments to function 'decor_quads_to_property'
/usr/include/compiz/decoration.h:186:1: note: declared here
main.c:2423:5: warning: passing argument 7 of 'decor_quads_to_property' makes integer from pointer without a cast
/usr/include/compiz/decoration.h:186:1: note: expected 'int' but argument is of type 'struct decor_quad_t *'
main.c:2423:5: error: too few arguments to function 'decor_quads_to_property'
/usr/include/compiz/decoration.h:186:1: note: declared here
main.c: In function 'main':
main.c:5642:5: error: too few arguments to function 'decor_set_dm_check_hint'
/usr/include/compiz/decoration.h:411:1: note: declared here
make[3]: *** [main.o] Error 1
make[3]: Leaving directory `/build/buildd/emerald-0.7.2/src'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/build/buildd/emerald-0.7.2'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/build/buildd/emerald-0.7.2'
make: *** [debian/stamp-makefile-build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110403-0953
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/emerald-0.7.2