Running cloud-init collect-logs inside a chroot is not possible

When trying to debug boot issues of a GCE instance I mounted a snapshot of it's boot disk on a running instance and tried to run `sudo chroot /home/ubuntu/failedbootdebug/ cloud-init collect-logs`.

This results in the errors below.

Is running collect-logs inside a chroot an expected use case or should I just gather as much as I can from the list @ http://cloudinit.readthedocs.io/en/latest/topics/capabilities.html#cloud-init-collect-logs ?

ubuntu@failed-boot-debug:~$ sudo chroot /home/ubuntu/failedbootdebug/ cloud-init collect-logs
Traceback (most recent call last):
  File "/usr/bin/cloud-init", line 11, in <module>
    load_entry_point('cloud-init==18.2', 'console_scripts', 'cloud-init')()
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 882, in main
    get_uptime=True, func=functor, args=(name, args))
  File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 2395, in log_time
    ret = func(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/devel/logs.py", line 88, in handle_collect_logs_args
    collect_logs(args.tarfile, args.userdata)
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/devel/logs.py", line 81, in collect_logs
    shutil.copytree(CLOUDINIT_RUN_DIR, os.path.join(run_dir, 'cloud-init'))
  File "/usr/lib/python3.6/shutil.py", line 309, in copytree
    names = os.listdir(src)
FileNotFoundError: [Errno 2] No such file or directory: '/run/cloud-init'
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport/report.py", line 546, in add_proc_info
    self['ExecutablePath'] = os.readlink('/proc/' + pid + '/exe')
FileNotFoundError: [Errno 2] No such file or directory: '/proc/1918/exe'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 109, in apport_excepthook
    pr.add_proc_info(extraenv=['PYTHONPATH', 'PYTHONHOME'])
  File "/usr/lib/python3/dist-packages/apport/report.py", line 549, in add_proc_info
    raise ValueError('invalid process')
ValueError: invalid process

Original exception was:
Traceback (most recent call last):
  File "/usr/bin/cloud-init", line 11, in <module>
    load_entry_point('cloud-init==18.2', 'console_scripts', 'cloud-init')()
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 882, in main
    get_uptime=True, func=functor, args=(name, args))
  File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 2395, in log_time
    ret = func(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/devel/logs.py", line 88, in handle_collect_logs_args
    collect_logs(args.tarfile, args.userdata)
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/devel/logs.py", line 81, in collect_logs
    shutil.copytree(CLOUDINIT_RUN_DIR, os.path.join(run_dir, 'cloud-init'))
  File "/usr/lib/python3.6/shutil.py", line 309, in copytree
    names = os.listdir(src)
FileNotFoundError: [Errno 2] No such file or directory: '/run/cloud-init'
ubuntu@failed-boot-debug:~$