ekg version 1:1.8~rc2-1 failed to build in oneiric

ekg version 1:1.8~rc2-1 failed to build in oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2692215

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/2692215/+files/buildlog_ubuntu-oneiric-amd64.ekg_1%3A1.8%7Erc2-1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 2016 lines into the build log:

Changes:
 ekg (1:1.8~rc2-1) unstable; urgency=low
 .
   * [7ba5778] Make the Makefiles support separate build directories.
   * [57c0ea1] Modernized the build and created new ekg-gtk package.
   * Removed the obsolete libreadline5-dev dependency (Closes: Bug#553749)
Checksums-Sha1:
 a2c673eb1af10f04f3152c3beba622798ee95ba4 309222 ekg_1.8~rc2-1_amd64.deb
 31b37c46b795d458af2e3a8cd61af3802e32e20d 255936 ekg-gtk_1.8~rc2-1_amd64.deb
Checksums-Sha256:
 6d804d6bbc8d35b2fe911af26bc17d0ee41540332d3b80c8dd444819edb789cb 309222 ekg_1.8~rc2-1_amd64.deb
 fa1f4556296e43d1dfe9b7e394005769e8e364087dffab5f5859159edd02202e 255936 ekg-gtk_1.8~rc2-1_amd64.deb
Files:
 2be7cc668f0650b119729277f713dadd 309222 net optional ekg_1.8~rc2-1_amd64.deb
 1bac95dae76fc44c48c3b71805f01041 255936 net optional ekg-gtk_1.8~rc2-1_amd64.deb

******************************************************************************
Built successfully
Purging chroot-autobuild/build/buildd/ekg-1.8~rc2