open-iscsi fails to install

This is a duplicate of bug #214476, which was reported against Launchpad Build System. The problem is actually in the open-iscsi package.

Setting up open-iscsi (2.0.865-1) ...
 * iSCSI requires a mounted sysfs, not started.
invoke-rc.d: initscript open-iscsi, action "start" failed.
dpkg: error processing open-iscsi (--configure):
 subprocess post-installation script returned error exit status 1
[...]
Errors were encountered while processing:
 open-iscsi
E: Sub-process /usr/bin/dpkg returned an error code (1)
apt-get failed.
[...]

And the build is not started.

I don't know the autobuilders configuration but this *might* be a duplicate of bug #208441