kphone version 1:4.2-6ubuntu1 failed to build on i386

kphone version 1:4.2-6ubuntu1 failed to build on i386
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2397207

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110329/+buildjob/2397207/+files/buildlog_ubuntu-natty-i386.kphone_1%3A4.2-6ubuntu1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 1602 lines into the build log:

c++ -I/usr/share/qt3/include -Wall -O3 -I. -I../gsm -I../ilbc -I../dissipate2 -DHAVE_CONFIG_H -DSHARE_DIR=\"/usr/share/apps/kphone\" -DPO_DIR=\"/usr/share/kphone/translations//\" -c -o dspaudioout.o dspaudioout.cpp
dspaudioout.cpp: In member function 'virtual void DspAudioOut::timerTick()':
dspaudioout.cpp:86:58: warning: format not a string literal and no format arguments
c++ -I/usr/share/qt3/include -Wall -O3 -I. -I../gsm -I../ilbc -I../dissipate2 -DHAVE_CONFIG_H -DSHARE_DIR=\"/usr/share/apps/kphone\" -DPO_DIR=\"/usr/share/kphone/translations//\" -c -o calllistview.o calllistview.cpp
/usr/share/qt3/bin/moc -o calllistview.moc.cpp calllistview.h
c++ -I/usr/share/qt3/include -Wall -O3 -I. -I../gsm -I../ilbc -I../dissipate2 -DHAVE_CONFIG_H -DSHARE_DIR=\"/usr/share/apps/kphone\" -DPO_DIR=\"/usr/share/kphone/translations//\" -c -o calllistview.moc.o calllistview.moc.cpp
c++ -I/usr/share/qt3/include -Wall -O3 -I. -I../gsm -I../ilbc -I../dissipate2 -DHAVE_CONFIG_H -DSHARE_DIR=\"/usr/share/apps/kphone\" -DPO_DIR=\"/usr/share/kphone/translations//\" -c -o kcallwidget.o kcallwidget.cpp
kcallwidget.cpp: In constructor 'KCallWidget::KCallWidget(KSipAuthentication*, CallAudio*, SipCall*, KPhoneView*, const char*)':
kcallwidget.cpp:95:60: error: cannot call constructor 'KCallWidget::QDialog' directly
kcallwidget.cpp:95:60: error: for a function-style cast, remove the redundant '::QDialog'
kcallwidget.cpp:95:60: error: no matching function for call to 'KCallWidget::KCallWidget(NULL, const char*&, const bool&, Qt::WidgetFlags)'
kcallwidget.h:57:2: note: candidates are: KCallWidget::KCallWidget(KSipAuthentication*, CallAudio*, SipCall*, KPhoneView*, const char*)
kcallwidget.h:54:1: note: KCallWidget::KCallWidget(const KCallWidget&)
kcallwidget.cpp:97:62: error: cannot call constructor 'KCallWidget::QDialog' directly
kcallwidget.cpp:97:62: error: for a function-style cast, remove the redundant '::QDialog'
kcallwidget.cpp:97:62: error: no matching function for call to 'KCallWidget::KCallWidget(KPhoneView*&, const char*&, const bool&, Qt::WidgetFlags)'
kcallwidget.h:57:2: note: candidates are: KCallWidget::KCallWidget(KSipAuthentication*, CallAudio*, SipCall*, KPhoneView*, const char*)
kcallwidget.h:54:1: note: KCallWidget::KCallWidget(const KCallWidget&)
make[2]: *** [kcallwidget.o] Error 1
rm kphone.moc.cpp menulistview.moc.cpp kphoneview.moc.cpp calllistview.moc.cpp
make[2]: Leaving directory `/build/buildd/kphone-4.2/kphone'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/build/buildd/kphone-4.2'
make: *** [debian/stamp-makefile-build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110403-1031
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/kphone-4.2