Unpacking libpython3-stdlib:amd64 (3.6.2-1ubuntu1) ...
Selecting previously unselected package dh-python.
Preparing to unpack .../9-dh-python_2.20170125_all.deb ...
Unpacking dh-python (2.20170125) ...
Setting up libpython3.6-minimal:amd64 (3.6.2-3) ...
Setting up libexpat1:amd64 (2.2.3-1) ...
Setting up python3.6-minimal (3.6.2-3) ...
Setting up python3-minimal (3.6.2-1ubuntu1) ...
Traceback (most recent call last):
  File "/usr/bin/py3compile", line 34, in <module>
    from debpython.version import SUPPORTED, debsorted, vrepr, \
  File "/usr/share/python3/debpython/version.py", line 46, in <module>
    _config.read('/usr/share/python3/debian_defaults')
  File "/usr/lib/python3.6/configparser.py", line 697, in read
    self._read(fp, filename)
  File "/usr/lib/python3.6/configparser.py", line 1092, in _read
    fpname, lineno)
configparser.DuplicateOptionError: While reading from '/usr/share/python3/debian_defaults' [line 10]: option 'old-versions' in section 'DEFAULT' already exists
dpkg: error processing package python3-minimal (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 python3-minimal
E: Sub-process /usr/bin/dpkg returned an error code (1)
apt-get failed.
E: Package installation failed
Not removing build depends: cloned chroot in use
/usr/bin/du: cannot access '/<<PKGBUILDDIR>>': No such file or directory
E: read_command failed to execute du
E: Cannot determine space needed for /<<PKGBUILDDIR>> (du failed)