Cannot restore backup from other notebook

[Luc Saffre]

I am trying to restore a backup which was made on my current notebook to my new notebook. Both notebooks are running Ubuntu 14.04.

$ dpkg-query -W deja-dup duplicity
deja-dup 30.0-0ubuntu4
duplicity 0.6.23-1ubuntu4.1

I tried the instructions on https://wiki.gnome.org/Apps/DejaDup/Help/Restore/WorstCase, getting the following error messages:

luc@E6430:~$ mkdir /tmp/restore
luc@E6430:~$ duplicity --gio file:///media/backup/hoppel /tmp/restore
Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1494, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1488, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1322, in main
    action = commandline.ProcessCommandLine(sys.argv[1:])
  File "/usr/lib/python2.7/dist-packages/duplicity/commandline.py", line 1036, in ProcessCommandLine
    backup, local_pathname = set_backend(args[0], args[1])
  File "/usr/lib/python2.7/dist-packages/duplicity/commandline.py", line 929, in set_backend
    globals.backend = backend.get_backend(bend)
  File "/usr/lib/python2.7/dist-packages/duplicity/backend.py", line 158, in get_backend
    return _forced_backend(pu)
  File "/usr/lib/python2.7/dist-packages/duplicity/backends/giobackend.py", line 95, in __init__
    self.remote_file.make_directory_with_parents(None)
GError: Error creating directory: Permission denied

luc@E6430:~$ touch /tmp/restore/foo.txt
luc@E6430:~$ ls -l /tmp/restore/foo.txt
-rw-rw-r-- 1 luc luc 0 aug 6 13:45 /tmp/restore/foo.txt
luc@E6430:~$

(That same message came when I first tried using the GUI)