Ubuntu

do-release-upgrade fails after download

Asked by rsteinmetz70112 on 2019-04-17

Upgrading from 16.04 LTS to 18.04 LTS do-release upgrade downloads the upgrade then fails.

$ do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [819 B]
Get:2 Upgrade tool [1,246 kB]
Fetched 1,247 kB in 0s (0 B/s)
authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg'
extracting 'bionic.tar.gz'
[sudo] password for romulus:

If I enter the password I get this:

Traceback (most recent call last):
  File "/tmp/ubuntu-release-upgrader-zowqztrk/bionic", line 8, in <module>
    sys.exit(main())
  File "/tmp/ubuntu-release-upgrader-zowqztrk/DistUpgrade/DistUpgradeMain.py", line 224, in main
    from .DistUpgradeController import DistUpgradeController
  File "/tmp/ubuntu-release-upgrader-zowqztrk/DistUpgrade/DistUpgradeController.py", line 52, in <module>
    from .DistUpgradeQuirks import DistUpgradeQuirks
  File "/tmp/ubuntu-release-upgrader-zowqztrk/DistUpgrade/DistUpgradeQuirks.py", line 36, in <module>
    from janitor.plugincore.manager import PluginManager
  File "/tmp/ubuntu-release-upgrader-zowqztrk/janitor/__init__.py", line 20, in <module>
    import pkg_resources
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 69, in <module>
    __import__('pkg_resources.extern.packaging.version')
  File "/usr/lib/python3/dist-packages/pkg_resources/_vendor/packaging/version.py", line 10, in <module>
    from ._structures import Infinity
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 661, in exec_module
  File "<frozen importlib._bootstrap_external>", line 765, in get_code
  File "<frozen importlib._bootstrap_external>", line 476, in _compile_bytecode
ValueError: bad marshal data (invalid reference)
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/problem_report.py", line 497, in add_to_existing
    self.write(f)
  File "/usr/lib/python3/dist-packages/problem_report.py", line 450, in write
    block = f.read(1048576)
  File "/usr/lib/python3.5/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte

Foloowed by:

Original exception was:
Traceback (most recent call last):
  File "/tmp/ubuntu-release-upgrader-zowqztrk/bionic", line 8, in <module>
    sys.exit(main())
  File "/tmp/ubuntu-release-upgrader-zowqztrk/DistUpgrade/DistUpgradeMain.py", line 224, in main
    from .DistUpgradeController import DistUpgradeController
  File "/tmp/ubuntu-release-upgrader-zowqztrk/DistUpgrade/DistUpgradeController.py", line 52, in <module>
    from .DistUpgradeQuirks import DistUpgradeQuirks
  File "/tmp/ubuntu-release-upgrader-zowqztrk/DistUpgrade/DistUpgradeQuirks.py", line 36, in <module>
    from janitor.plugincore.manager import PluginManager
  File "/tmp/ubuntu-release-upgrader-zowqztrk/janitor/__init__.py", line 20, in <module>
    import pkg_resources
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 69, in <module>
    __import__('pkg_resources.extern.packaging.version')
  File "/usr/lib/python3/dist-packages/pkg_resources/_vendor/packaging/version.py", line 10, in <module>
    from ._structures import Infinity
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 661, in exec_module
  File "<frozen importlib._bootstrap_external>", line 765, in get_code
  File "<frozen importlib._bootstrap_external>", line 476, in _compile_bytecode
ValueError: bad marshal data (invalid reference)
=== Command terminated with exit status 1 (Sat Apr 13 12:26:47 2019) ===