wireless-regdb version 2011.04.28-1 failed to build in oneiric

wireless-regdb version 2011.04.28-1 failed to build in oneiric
Link to failed build: https://launchpad.net/ubuntu/+source/wireless-regdb/2011.04.28-1/+build/2508713

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/+source/wireless-regdb/2011.04.28-1/+build/2508713/+files/buildlog_ubuntu-oneiric-i386.wireless-regdb_2011.04.28-1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 308 lines into the build log:

   dh_clean
 debian/rules build
dh build
   dh_testdir
   dh_auto_configure
   dh_auto_build
make[1]: Entering directory `/build/buildd/wireless-regdb-2011.04.28'
No private key found. To generate a private key, run:
    make ~/.wireless-regdb-<author-id>.key.priv.pem
Your author-id is currently "<email address hidden>"; set REGDB_AUTHOR to override this.
make[1]: *** [/<email address hidden>] Error 1
make[1]: Leaving directory `/build/buildd/wireless-regdb-2011.04.28'
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 20110517-1041
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/wireless-regdb-2011.04.28