https://launchpad.net/~build.snapcraft.io/+snap/ac177f0d66107f874f778b2f4bfd66bf/+build/2410561
RUN: /usr/share/launchpad-buildd/bin/builder-prep 
Kernel version: Linux bos02-ppc64el-008 5.4.0-172-generic #190-Ubuntu SMP Fri Feb 2 23:24:23 UTC 2024 ppc64le
Buildd toolchain package versions: launchpad-buildd_236~650~ubuntu20.04.1 python3-lpbuildd_236~650~ubuntu20.04.1 sbuild_0.79.0-1ubuntu1 git-build-recipe_0.3.6 git_1:2.25.1-1ubuntu3.11 dpkg-dev_1.19.7ubuntu3.2 python3-debian_0.1.36ubuntu1.1.
Syncing the system clock with the buildd NTP service...
 5 Mar 21:36:53 ntpdate[1934]: adjust time server 10.211.37.1 offset 0.010216 sec
RUN: /usr/share/launchpad-buildd/bin/in-target unpack-chroot --backend=lxd --series=bionic --arch=ppc64el SNAPBUILD-2410561 --image-type lxd /home/buildd/filecache-default/0707fdf7fa8738051567ee761272d8ee71d34cad
Creating target for build SNAPBUILD-2410561
To start your first container, try: lxc launch ubuntu:20.04
Or for a virtual machine: lxc launch ubuntu:20.04 --vm

/usr/lib/python3/dist-packages/pylxd/models/operation.py:76: UserWarning: Attempted to set unknown attribute "location" on instance of "Operation"
  warnings.warn(
RUN: /usr/share/launchpad-buildd/bin/in-target mount-chroot --backend=lxd --series=bionic --arch=ppc64el SNAPBUILD-2410561
Starting target for build SNAPBUILD-2410561
/usr/lib/python3/dist-packages/pylxd/models/operation.py:76: UserWarning: Attempted to set unknown attribute "location" on instance of "Operation"
  warnings.warn(
Error: Instance is not running
/usr/lib/python3/dist-packages/pylxd/models/_model.py:134: UserWarning: Attempted to set unknown attribute "type" on instance of "Container"
  warnings.warn(
/usr/lib/python3/dist-packages/pylxd/models/_model.py:134: UserWarning: Attempted to set unknown attribute "project" on instance of "Container"
  warnings.warn(
Error: Instance is not running
Error: Instance is not running
Error: Instance is not running
Error: failed to begin transaction: context deadline exceeded
Error: failed to begin transaction: context deadline exceeded
Traceback (most recent call last):
  File "/usr/share/launchpad-buildd/bin/in-target", line 20, in <module>
    sys.exit(main())
  File "/usr/share/launchpad-buildd/bin/in-target", line 16, in main
    return args.operation.run()
  File "/usr/lib/python3/dist-packages/lpbuildd/target/lifecycle.py", line 36, in run
    self.backend.start()
  File "/usr/lib/python3/dist-packages/lpbuildd/target/lxd.py", line 601, in start
    self.run(
  File "/usr/lib/python3/dist-packages/lpbuildd/target/lxd.py", line 718, in run
    subprocess.check_call(cmd, **kwargs)
  File "/usr/lib/python3.8/subprocess.py", line 364, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['lxc', 'exec', 'lp-bionic-ppc64el', '--', 'linux64', 'mknod', '-m', '0660', '/dev/dm-0', 'b', '253', '0']' returned non-zero exit status 1.