dssi-vst version 0.9.2-1ubuntu1 failed to build on i386

dssi-vst version 0.9.2-1ubuntu1 failed to build on i386
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2391481

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2391481/+files/buildlog_ubuntu-natty-i386.dssi-vst_0.9.2-1ubuntu1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 1018 lines into the build log:

wineg++ -m32 -Ivestige -Wall -fPIC remotepluginclient.cpp -c -o remotepluginclient.w32.o
wineg++ -m32 -Ivestige -Wall -fPIC remotepluginserver.cpp -c -o remotepluginserver.w32.o
wineg++ -m32 -Ivestige -Wall -fPIC rdwrops.cpp -c -o rdwrops.w32.o
wineg++ -m32 -Ivestige -Wall -fPIC paths.cpp -c -o paths.w32.o
ar r libremoteplugin.w32.a remotepluginclient.w32.o remotepluginserver.w32.o rdwrops.w32.o paths.w32.o
ar: creating libremoteplugin.w32.a
wineg++ -m32 -Ivestige -Wall -fPIC dssi-vst-server.cpp -o dssi-vst-server -L. -lremoteplugin.w32 -lpthread
wineg++ -m32 -Ivestige -Wall -fPIC dssi-vst-scanner.cpp -o dssi-vst-scanner -L. -lremoteplugin.w32 -lpthread
g++ -Ivestige -Wall -fPIC remotepluginclient.cpp -c
g++ -Ivestige -Wall -fPIC remotepluginserver.cpp -c
g++ -Ivestige -Wall -fPIC rdwrops.cpp -c
g++ -Ivestige -Wall -fPIC paths.cpp -c
ar r libremoteplugin.a remotepluginclient.o remotepluginserver.o rdwrops.o paths.o
ar: creating libremoteplugin.a
g++ -Ivestige -Wall -fPIC remotevstclient.cpp -c
g++ -shared -Wl,-Bsymbolic -g3 -Ivestige -Wall -fPIC -o dssi-vst.so dssi-vst.cpp remotevstclient.o -L. -lremoteplugin -lasound
g++ -Ivestige -Wall -fPIC dssi-vst_gui.cpp rdwrops.o -o dssi-vst_gui -llo
g++ -Ivestige -Wall -fPIC vsthost.cpp remotevstclient.o -o vsthost -L. -lremoteplugin -ljack -lasound -lpthread
vsthost.cpp:19:23: fatal error: jack/jack.h: No such file or directory
compilation terminated.
make[1]: *** [vsthost] Error 1
make[1]: Leaving directory `/build/buildd/dssi-vst-0.9.2'
dh_auto_build: make -j1 returned exit code 2
make: *** [build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110403-1054
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/dssi-vst-0.9.2