rutilt version 0.18-0ubuntu2 failed to build in oneiric

rutilt version 0.18-0ubuntu2 failed to build in oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2710849

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/2710849/+files/buildlog_ubuntu-oneiric-amd64.rutilt_0.18-0ubuntu2_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 766 lines into the build log:

Generating Makefile constants... done
Generating program constants... done
Generating desktop launcher... done
Generating helper_launcher.sh... done
touch configure-stamp
dh_testdir
/usr/bin/make
make[1]: Entering directory `/build/buildd/rutilt-0.18'
    Compiling lib/WE17Driver.o
In file included from lib/src//WE17Driver.cxx:36:0:
include/WE17Driver.h:107:31: error: reference 'm_Data' cannot be declared 'mutable' [-fpermissive]
make[1]: *** [lib/WE17Driver.o] Error 1
make[1]: Leaving directory `/build/buildd/rutilt-0.18'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110823-0808
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/rutilt-0.18