Traceback (most recent call last):
  File "/snap/subiquity/5584/lib/python3.10/site-packages/subiquity/server/controllers/install.py", line 246, in run_curtin_step
    await run_curtin_command(
  File "/snap/subiquity/5584/lib/python3.10/site-packages/subiquity/server/curtin.py", line 230, in run_curtin_command
    return await cmd.wait()
  File "/snap/subiquity/5584/lib/python3.10/site-packages/subiquity/server/curtin.py", line 125, in wait
    result = await self.runner.wait(self.proc)
  File "/snap/subiquity/5584/lib/python3.10/site-packages/subiquity/server/runner.py", line 94, in wait
    raise subprocess.CalledProcessError(
subprocess.CalledProcessError: Command '['systemd-run', '--wait', '--same-dir', '--property', 'SyslogIdentifier=subiquity_log.2159', '--setenv', 'PATH=/snap/subiquity/5584/bin:/snap/subiquity/5584/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/subiquity/5584/bin:/snap/subiquity/5584/sbin', '--setenv', 'PYTHONPATH=:/snap/subiquity/5584/lib/python3.10/site-packages', '--setenv', 'PYTHON=/snap/subiquity/5584/usr/bin/python3.10', '--setenv', 'SNAP=/snap/subiquity/5584', '--', '/snap/subiquity/5584/usr/bin/python3.10', '-m', 'curtin', '--showtrace', '-vvv', '--set', 'json:reporting={"subiquity": {"type": "journald", "identifier": "curtin_event.2159.5"}}', '-c', '/var/log/installer/curtin-install/subiquity-partitioning.conf', 'install', '--set', 'json:stages=["partitioning"]', 'cp:///tmp/tmppnm6vkgh/mount']' returned non-zero exit status 3.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/subiquity/5584/lib/python3.10/site-packages/subiquity/server/controllers/install.py", line 617, in install
    await self.curtin_install(context=context, source=for_install_path)
  File "/snap/subiquity/5584/lib/python3.10/site-packages/subiquitycore/context.py", line 149, in decorated_async
    return await meth(self, **kw)
  File "/snap/subiquity/5584/lib/python3.10/site-packages/subiquity/server/controllers/install.py", line 402, in curtin_install
    await run_curtin_step(
  File "/snap/subiquity/5584/lib/python3.10/site-packages/subiquity/server/controllers/install.py", line 340, in run_curtin_step
    await self.run_curtin_step(
  File "/snap/subiquity/5584/lib/python3.10/site-packages/subiquitycore/context.py", line 149, in decorated_async
    return await meth(self, **kw)
  File "/snap/subiquity/5584/lib/python3.10/site-packages/subiquity/server/controllers/install.py", line 257, in run_curtin_step
    raise CurtinInstallError(stages=stages)
subiquity.server.controllers.install.CurtinInstallError
