- Update to runc v1.1.0~rc1. Upstream changelog is available from
  https://github.com/opencontainers/runc/releases/tag/v1.1.0-rc.1.
  + Add support for RDMA cgroup added in Linux 4.11.
  * runc exec now produces exit code of 255 when the exec failed.
    This may help in distinguishing between runc exec failures
    (such as invalid options, non-running container or non-existent
    binary etc.) and failures of the command being executed.
  + runc run: new --keep option to skip removal exited containers artefacts.
    This might be useful to check the state (e.g. of cgroup controllers) after
    the container hasexited.
  + seccomp: add support for SCMP_ACT_KILL_PROCESS and SCMP_ACT_KILL_THREAD
    (the latter is just an alias for SCMP_ACT_KILL).
  + seccomp: add support for SCMP_ACT_NOTIFY (seccomp actions). This allows
    users to create sophisticated seccomp filters where syscalls can be
    efficiently emulated by privileged processes on the host.
  + checkpoint/restore: add an option (--lsm-mount-context) to set
    a different LSM mount context on restore.
  + intelrdt: support ClosID parameter.
  + runc exec --cgroup: an option to specify a (non-top) in-container cgroup
    to use for the process being executed.
  + cgroup v1 controllers now support hybrid hierarchy (i.e. when on a cgroup v1
    machine a cgroup2 filesystem is mounted to /sys/fs/cgroup/unified, runc
    run/exec now adds the container to the appropriate cgroup under it).
  + sysctl: allow slashes in sysctl names, to better match sysctl(8)'s
    behaviour.
  + mounts: add support for bind-mounts which are inaccessible after switching
    the user namespace. Note that this does not permit the container any
    additional access to the host filesystem, it simply allows containers to
    have bind-mounts configured for paths the user can access but have
    restrictive access control settings for other users.

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