Builds that run out of disk space never exit

[Julian Edwards]

See this log tail, the build is 3 days old at this point:

Purging configuration files for libxau6 ...
Removing mime-support ...
Purging configuration files for mime-support ...
Removing libnewt0.52 ...
Purging configuration files for libnewt0.52 ...
Removing libxdmcp6 ...
Purging configuration files for libxdmcp6 ...
Removing ucf ...
Purging configuration files for ucf ...
Removing libsqlite3-0 ...
Purging configuration files for libsqlite3-0 ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
******************************************************************************
Finished at 20110107-1712
Build needed 00:02:43, 2696k disk space
Can't open average time db /var/debbuild/avg-build-times
Can't open average space db /var/debbuild/avg-build-space
RUN: /usr/share/launchpad-buildd/slavebin/scan-for-processes ['/usr/share/launchpad-buildd/slavebin/scan-for-processes', '64304b35d0a9739d63b4dc1db57a82a25656a3ff']
Scanning for processes to kill in build /home/buildd/build-64304b35d0a9739d63b4dc1db57a82a25656a3ff/chroot-autobuild...