[Bug 1924604] [NEW] do-release-upgrade crashed with KeyError in __getitem__(): "The cache has no package named 'python-is-python2'"

[Brian Murray]

Public bug reported:

This is because universe was not enabled on the system being upgraded.

Error Tracker buckets:
https://errors.ubuntu.com/problem/f92900f3c057db7600d88857e7c05434b69d2496
https://errors.ubuntu.com/problem/23e6edb38993cb74331d30beeadccdfffe1d557a

ProblemType: CrashDistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.31
ProcVersionSignature: Ubuntu 5.4.0-71.79~18.04.1-generic 5.4.101
Uname: Linux 5.4.0-71-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.23
Architecture: amd64
CrashDB: ubuntu
Date: Thu Apr 15 10:59:53 2021
ExecutablePath: /usr/bin/do-release-upgrade
ExecutableTimestamp: 1606763386
InstallationDate: Installed on 2021-04-13 (1 days ago)
InstallationMedia: Ubuntu 18.04.5 LTS "Bionic Beaver" - Release amd64 (20200806.1)
InterpreterPath: /usr/bin/python3.6
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 -s ./focal --frontend DistUpgradeViewText
ProcCwd: /tmp/ubuntu-release-upgrader-e397n4sn
ProcEnviron:
 TERM=screen
 SHELL=/bin/bash
 LANG=en_US.UTF-8
 LC_CTYPE=en_US.UTF-8
 PATH=(custom, no user)
Python3Details: /usr/bin/python3.6, Python 3.6.9, python3-minimal, 3.6.7-1~18.04
PythonArgs: ['/usr/bin/do-release-upgrade', '--frontend', 'DistUpgradeViewText']
PythonDetails: /usr/bin/python2.7, Python 2.7.17, python-minimal, 2.7.15~rc1-1SourcePackage: ubuntu-release-upgrader
Title: do-release-upgrade crashed with KeyError in __getitem__(): "The cache has no package named 'python-is-python2'"
UpgradeStatus: Upgraded to bionic on 2021-04-15 (0 days ago)

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-crash dist-upgrade need-duplicate-check

** Information type changed from Private to Public

** Description changed:

  This is because universe was not enabled on the system being upgraded.
  
- ProblemType: Crash
- DistroRelease: Ubuntu 20.04
+ Error Tracker buckets:
+ https://errors.ubuntu.com/problem/f92900f3c057db7600d88857e7c05434b69d2496
+ https://errors.ubuntu.com/problem/23e6edb38993cb74331d30beeadccdfffe1d557a
+ 
+ ProblemType: CrashDistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.31
  ProcVersionSignature: Ubuntu 5.4.0-71.79~18.04.1-generic 5.4.101
  Uname: Linux 5.4.0-71-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.23
  Architecture: amd64
  CrashDB: ubuntu
  Date: Thu Apr 15 10:59:53 2021
  ExecutablePath: /usr/bin/do-release-upgrade
  ExecutableTimestamp: 1606763386
  InstallationDate: Installed on 2021-04-13 (1 days ago)
  InstallationMedia: Ubuntu 18.04.5 LTS "Bionic Beaver" - Release amd64 (20200806.1)
  InterpreterPath: /usr/bin/python3.6
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 -s ./focal --frontend DistUpgradeViewText
  ProcCwd: /tmp/ubuntu-release-upgrader-e397n4sn
  ProcEnviron:
-  TERM=screen
-  SHELL=/bin/bash
-  LANG=en_US.UTF-8
-  LC_CTYPE=en_US.UTF-8
-  PATH=(custom, no user)
+  TERM=screen
+  SHELL=/bin/bash
+  LANG=en_US.UTF-8
+  LC_CTYPE=en_US.UTF-8
+  PATH=(custom, no user)
  Python3Details: /usr/bin/python3.6, Python 3.6.9, python3-minimal, 3.6.7-1~18.04
  PythonArgs: ['/usr/bin/do-release-upgrade', '--frontend', 'DistUpgradeViewText']
- PythonDetails: /usr/bin/python2.7, Python 2.7.17, python-minimal, 2.7.15~rc1-1
- SourcePackage: ubuntu-release-upgrader
+ PythonDetails: /usr/bin/python2.7, Python 2.7.17, python-minimal, 2.7.15~rc1-1SourcePackage: ubuntu-release-upgrader
  Title: do-release-upgrade crashed with KeyError in __getitem__(): "The cache has no package named 'python-is-python2'"
  UpgradeStatus: Upgraded to bionic on 2021-04-15 (0 days ago)

-- 
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Ubuntu.
https://bugs.launchpad.net/bugs/1924604

Title:
  do-release-upgrade crashed with KeyError in __getitem__(): "The cache
  has no package named 'python-is-python2'"

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  This is because universe was not enabled on the system being upgraded.

  Error Tracker buckets:
  https://errors.ubuntu.com/problem/f92900f3c057db7600d88857e7c05434b69d2496
  https://errors.ubuntu.com/problem/23e6edb38993cb74331d30beeadccdfffe1d557a

  ProblemType: CrashDistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.31
  ProcVersionSignature: Ubuntu 5.4.0-71.79~18.04.1-generic 5.4.101
  Uname: Linux 5.4.0-71-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.23
  Architecture: amd64
  CrashDB: ubuntu
  Date: Thu Apr 15 10:59:53 2021
  ExecutablePath: /usr/bin/do-release-upgrade
  ExecutableTimestamp: 1606763386
  InstallationDate: Installed on 2021-04-13 (1 days ago)
  InstallationMedia: Ubuntu 18.04.5 LTS "Bionic Beaver" - Release amd64 (20200806.1)
  InterpreterPath: /usr/bin/python3.6
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 -s ./focal --frontend DistUpgradeViewText
  ProcCwd: /tmp/ubuntu-release-upgrader-e397n4sn
  ProcEnviron:
   TERM=screen
   SHELL=/bin/bash
   LANG=en_US.UTF-8
   LC_CTYPE=en_US.UTF-8
   PATH=(custom, no user)
  Python3Details: /usr/bin/python3.6, Python 3.6.9, python3-minimal, 3.6.7-1~18.04
  PythonArgs: ['/usr/bin/do-release-upgrade', '--frontend', 'DistUpgradeViewText']
  PythonDetails: /usr/bin/python2.7, Python 2.7.17, python-minimal, 2.7.15~rc1-1SourcePackage: ubuntu-release-upgrader
  Title: do-release-upgrade crashed with KeyError in __getitem__(): "The cache has no package named 'python-is-python2'"
  UpgradeStatus: Upgraded to bionic on 2021-04-15 (0 days ago)

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