[arch-general] Schroot no longer working?

[Ng Oon-Ee]

Hi all, schroot stopped working with this error message today:-
E: 10mount: E: boost::filesystem::create_directory: No such file or
directory: "/var/lib/schroot/mount/Arch32-d43bee30-1708-4fd2-b087-346ae0f39b42/proc/bus/usb"
E: Arch32-d43bee30-1708-4fd2-b087-346ae0f39b42: Chroot setup failed:
stage=setup-start

The following packages were upgraded (immediately following successful
usage of schroot at 6.30 am). Any idea which of those could be the
cause? At first I thought about the boost upgrade some time back, then
realize I've been using schroot daily with no problems anyway...
[2010-03-22 07:14] upgraded cpio (2.10-1 -> 2.11-1)
[2010-03-22 07:14] upgraded dbus-core (1.2.20-1 -> 1.2.22-1)
[2010-03-22 07:14] upgraded dbus (1.2.20-1 -> 1.2.22-1)
[2010-03-22 07:14] upgraded glib2 (2.22.4-1 -> 2.22.5-1)
[2010-03-22 07:14] upgraded desktop-file-utils (0.15-1 -> 0.16-1)
[2010-03-22 07:14] upgraded libtasn1 (2.4-1 -> 2.5-1)
[2010-03-22 07:14] upgraded gnutls (2.8.5-1 -> 2.8.6-1)
[2010-03-22 07:14] upgraded libxt (1.0.7-1 -> 1.0.8-1)
[2010-03-22 07:14] upgraded ghostscript (8.71-2 -> 8.71-3)
[2010-03-22 07:14] upgraded gtk2 (2.18.7-1 -> 2.18.9-1)
[2010-03-22 07:14] upgraded gtk-sharp-2 (2.12.9-1 -> 2.12.10-1)
[2010-03-22 07:14] upgraded hdparm (9.27-2 -> 9.28-1)
[2010-03-22 07:14] upgraded nspr (4.8.3-1 -> 4.8.4-1)
[2010-03-22 07:14] upgraded nss (3.12.4-2 -> 3.12.6-1)
[2010-03-22 07:14] upgraded perl-xyne-arch (2010.03.20.1-1 -> 2010.03.21.1-1)
[2010-03-22 07:14] upgraded usbutils (0.86-2 -> 0.87-1)

For reference sake, using chroot works (am running am update of those
very same packages right now).