Failed to connect to socket /sys/fs/cgroup/cgmanager/sock: No such file or directory

[Barry Warsaw]

Since a recent Xenial dist-upgrade, schroot spews dbus errors, but doesn't seem to affect operation.

% schroot -u root -c xenial-amd64
Failed opening dbus connection: org.freedesktop.DBus.Error.FileNotFound: Failed to connect to socket /sys/fs/cgroup/cgmanager/sock: No such file or directory
(xenial-amd64)root@limelight:/home/barry#

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: schroot 1.6.10-1ubuntu2
ProcVersionSignature: Ubuntu 4.3.0-5.16-generic 4.3.3
Uname: Linux 4.3.0-5-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.19.3-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Jan 18 14:03:54 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2011-07-12 (1650 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110705.1)
SourcePackage: schroot
UpgradeStatus: Upgraded to xenial on 2011-12-23 (1486 days ago)
modified.conffile..etc.schroot.default.fstab: [modified]
mtime.conffile..etc.schroot.default.fstab: 2014-12-02T11:25:38.692897

[Barry Warsaw (barry)]

Of course, running sbuild with any chroot spews *tons* of these errors, so it's fairly annoying.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.