libhtml-popuptreeselect-perl version 1.6-5 failed to build in oneiric

libhtml-popuptreeselect-perl version 1.6-5 failed to build in oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2701043

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/2701043/+files/buildlog_ubuntu-oneiric-i386.libhtml-popuptreeselect-perl_1.6-5_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 505 lines into the build log:

make[1]: Leaving directory `/build/buildd/libhtml-popuptreeselect-perl-1.6'
touch debian/stamp-makefile-build
/usr/bin/make -C . OPTIMIZE="-g -O2 -g -O2 -Wall" test
make[1]: Entering directory `/build/buildd/libhtml-popuptreeselect-perl-1.6'
PERL_DL_NONLAZY=1 /usr/bin/perl "-Iblib/lib" "-Iblib/arch" test.pl
HTML::Template version 2.6 required--this is only version 2.10 at blib/lib/HTML/PopupTreeSelect.pm line 7.
BEGIN failed--compilation aborted at blib/lib/HTML/PopupTreeSelect.pm line 7.
Compilation failed in require at (eval 5) line 2.
 ...propagated at /usr/share/perl/5.12/base.pm line 93.
BEGIN failed--compilation aborted at test.pl line 101.
# Looks like your test exited with 2 before it could output anything.
make[1]: *** [test_dynamic] Error 2
make[1]: Leaving directory `/build/buildd/libhtml-popuptreeselect-perl-1.6'
make: *** [debian/stamp-makefile-check] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110823-2347
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/libhtml-popuptreeselect-perl-1.6