https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/focal/cpc/+build/343215
RUN: /usr/share/launchpad-buildd/bin/builder-prep 
Kernel version: Linux riscv64-qemu-lcy01-082 5.13.0-1019-generic #21~20.04.1-Ubuntu SMP Thu Mar 24 22:36:01 UTC 2022 riscv64
Buildd toolchain package versions: launchpad-buildd_212~550~ubuntu20.04.1 python3-lpbuildd_212~550~ubuntu20.04.1 sbuild_0.79.0-1ubuntu1 git_1:2.25.1-1ubuntu3.2 dpkg-dev_1.19.7ubuntu3 python3-debian_0.1.36ubuntu1.
Syncing the system clock with the buildd NTP service...
12 May 06:30:12 ntpdate[3624675]: adjust time server 10.211.37.1 offset -0.001562 sec
RUN: /usr/share/launchpad-buildd/bin/in-target unpack-chroot --backend=lxd --series=focal --arch=riscv64 LIVEFSBUILD-343215 --image-type chroot /home/buildd/filecache-default/41ba527d572035c79800345e872622fe68252a6a
Creating target for build LIVEFSBUILD-343215
/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=focal --arch=riscv64 LIVEFSBUILD-343215
Starting target for build LIVEFSBUILD-343215
/usr/lib/python3/dist-packages/pylxd/models/operation.py:76: UserWarning: Attempted to set unknown attribute "location" on instance of "Operation"
  warnings.warn(
/usr/lib/python3/dist-packages/pylxd/models/_model.py:134: UserWarning: Attempted to set unknown attribute "type" on instance of "Container"
  warnings.warn(
Error: Get "http://unix.socket/1.0/operations/a469f7ec-dbce-4f86-8204-0636b80bd93d": EOF
Traceback (most recent call last):
  File "/usr/share/launchpad-buildd/bin/in-target", line 23, in <module>
    sys.exit(main())
  File "/usr/share/launchpad-buildd/bin/in-target", line 19, in main
    return args.operation.run()
  File "/usr/lib/python3/dist-packages/lpbuildd/target/lifecycle.py", line 38, in run
    self.backend.start()
  File "/usr/lib/python3/dist-packages/lpbuildd/target/lxd.py", line 469, in start
    self.run(
  File "/usr/lib/python3/dist-packages/lpbuildd/target/lxd.py", line 533, 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-focal-riscv64', '--', 'linux64', 'mknod', '-m', '0660', '/dev/loop12', 'b', '7', '12']' returned non-zero exit status 1.
RUN: /usr/share/launchpad-buildd/bin/in-target umount-chroot --backend=lxd --series=focal --arch=riscv64 LIVEFSBUILD-343215
Stopping target for build LIVEFSBUILD-343215
/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/operation.py:76: UserWarning: Attempted to set unknown attribute "location" on instance of "Operation"
  warnings.warn(
RUN: /usr/share/launchpad-buildd/bin/in-target remove-build --backend=lxd --series=focal --arch=riscv64 LIVEFSBUILD-343215
Removing build LIVEFSBUILD-343215
/usr/lib/python3/dist-packages/pylxd/models/operation.py:76: UserWarning: Attempted to set unknown attribute "location" on instance of "Operation"
  warnings.warn(