lilypond version 2.12.3-7ubuntu1 failed to build in oneiric

lilypond version 2.12.3-7ubuntu1 failed to build in oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2704043

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/2704043/+files/buildlog_ubuntu-oneiric-i386.lilypond_2.12.3-7ubuntu1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 29966 lines into the build log:

job 0 terminated with signal: 11
error: Children (1 0) exited with errors.
command failed: /build/buildd/lilypond-2.12.3/out/bin/lilypond -I ./ -I ./out-test -I ../../input -I ../../input/lsr/ -I ../../input/regression/ -I ../../input/manual/ -I ../../input/tutorial/ -I /build/buildd/lilypond-2.12.3/mf/out/ -I /build/buildd/lilypond-2.12.3/mf/out/ -I /build/buildd/lilypond-2.12.3/input/manual -I /build/buildd/lilypond-2.12.3/Documentation -dbackend=eps --formats=ps -djob-count=2 -dseparate-log-files -dinclude-eps-fonts -dgs-load-lily-fonts --header=texidoc -I /build/buildd/lilypond-2.12.3/input/manual -ddump-profile -dcheck-internal-types -ddump-signatures -danti-alias-factor=1 -I "/build/buildd/lilypond-2.12.3/out/lybook-testdb" -I "/build/buildd/lilypond-2.12.3/input/regression" -I "/build/buildd/lilypond-2.12.3/input/regression" -I "/build/buildd/lilypond-2.12.3/input/regression/out-test" -I "/build/buildd/lilypond-2.12.3/input" -I "/build/buildd/lilypond-2.12.3/input/lsr" -I "/build/buildd/lilypond-2.12.3/input/regression" -I "/build/buildd/lilypond-2.12.3/input/manual" -I "/build/buildd/lilypond-2.12.3/input/tutorial" -I "/build/buildd/lilypond-2.12.3/mf/out" -I "/build/buildd/lilypond-2.12.3/mf/out" -I "/build/buildd/lilypond-2.12.3/input/manual" -I "/build/buildd/lilypond-2.12.3/Documentation" --formats=eps -deps-box-padding=3.000000 -dread-file-list -dno-strip-output-dir "/build/buildd/lilypond-2.12.3/out/lybook-testdb/snippet-names--154994470.ly"
Child returned 1
lilypond-book.py (GNU LilyPond) 2.12.3
make[3]: *** [out-test/collated-files.texi] Error 1
make[3]: Leaving directory `/build/buildd/lilypond-2.12.3/input/regression'
make[2]: *** [local-test] Error 2
make[2]: Leaving directory `/build/buildd/lilypond-2.12.3/input/regression'
make[1]: *** [test] Error 2
make[1]: Leaving directory `/build/buildd/lilypond-2.12.3'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110826-0759
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/lilypond-2.12.3