package python3.4-minimal 3.4.2-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[chm0ntf]

I believe software updater opened the new bug report url for me. I am running a do-release-upgrade to move from 14.04 to 14.10 but there were errors. It seems like something went wrong with the configuration of python3. That's really all I know I'm afraid.

ProblemType: Package
DistroRelease: Ubuntu 14.10
Package: python3.4-minimal 3.4.2-1
ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
Uname: Linux 3.13.0-39-generic i686
ApportVersion: 2.14.7-0ubuntu8
Architecture: i386
Date: Tue Nov 11 20:27:31 2014
DuplicateSignature: package:python3.4-minimal:3.4.2-1:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2011-05-08 (1283 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
SourcePackage: python3.4
Title: package python3.4-minimal 3.4.2-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to utopic on 2014-11-11 (0 days ago)

[chm0ntf (nickform)]

It seems that python3.4-minimal is the root package whose configuration goes wrong. This is my attempt to run manually:

$ sudo dpkg --configure python3.4-minimal
Setting up python3.4-minimal (3.4.2-1) ...
Traceback (most recent call last):
  File "/usr/lib/python3.4/py_compile.py", line 185, in <module>
    sys.exit(main())
  File "/usr/lib/python3.4/py_compile.py", line 177, in main
    compile(filename, doraise=True)
  File "/usr/lib/python3.4/py_compile.py", line 142, in compile
    importlib._bootstrap._write_atomic(cfile, bytecode, mode)
  File "<frozen importlib._bootstrap>", line 112, in _write_atomic
PermissionError: [Errno 1] Operation not permitted: '/usr/lib/python3.4/__pycache__/_threading_local.cpython-34.pyc.3072827024' -> '/usr/lib/python3.4/__pycache__/_threading_local.cpython-34.pyc'
dpkg: error processing package python3.4-minimal (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 python3.4-minimal

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.