At least for me the reason was bug 1626436. Can you try the test kernel there and see if that helps?
** Changed in: systemd (Ubuntu) Status: New => Incomplete ** Changed in: sbuild (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1645363 Title: slow sbuild Debian package builds (schroot calls are slow) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sbuild/+bug/1645363/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs