Test suite failing in buildds - possibly because of zookeeper dying?

[Clint Byrum]

https://launchpadlibrarian.net/89582471/buildlog_ubuntu-precise-i386.juju_0.5%2Bbzr442-2juju2~precise1~ppa0_FAILEDTOBUILD.txt.gz

I notice too that it took quite a bit longer than usual. I need some help
understanding why this is failing.. it doesn't seem to happen in oneiric,
but its pretty consistent in precise.

There's also another set of similar failures in natty:

https://launchpadlibrarian.net/89451958/buildlog_ubuntu-natty-i386.juju_0.5%2Bbzr442-1juju2~natty1_FAILEDTOBUILD.txt.gz

Notice that on oneiric, the test suite and build of the package only took
8 minutes, while the builds above were 28 and 30 minutes respectively.

https://launchpad.net/~juju/+archive/pkgs/+build/3081196

Any help is appreciated, thanks.