FYI: the system I'm using has kernel 3.8.0-42-generic, i.e. it was installed at the time when the "raring enablement stack" was active.
I can now reproduce with just a few lines: --- import subprocess args = ['/usr/sbin/debootstrap', '--arch=i386', 'trusty', '/tmp/tmpBQAxhc', 'http://archive.ubuntu.com/ubuntu'] stdin_arg = file('/dev/null', 'r') proc = subprocess.Popen(args, stdin=stdin_arg, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) print repr(proc.communicate()) --- strace shows the hang here: ... read(4, "I: Configuring initramfs-tools.."..., 1224) = 34 read(4, "I: Base system installed success"..., 1190) = 39 read(4, 0xd61919, 1151) = ? ERESTARTSYS (To be restarted) --- SIGCHLD (Child exited) @ 0 (0) --- read(4, -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to vm-builder in Ubuntu. https://bugs.launchpad.net/bugs/1287943 Title: vm-builder needs trusty suite To manage notifications about this bug go to: https://bugs.launchpad.net/vmbuilder/+bug/1287943/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs