[Bug 1425075] Re: do-release-upgrade crashed with TypeError in commit(): wait_for_child() takes 1 positional argument but 2 were given

[Brian Murray]

** Tags removed: rls-v-incoming

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https://bugs.launchpad.net/bugs/1425075

Title:
  do-release-upgrade crashed with TypeError in commit():
  wait_for_child() takes 1 positional argument but 2 were given

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

Bug description:
  during upgrade

  ProblemType: Crash
  DistroRelease: Ubuntu 15.04
  Package: ubuntu-release-upgrader-core 1:15.04.8
  ProcVersionSignature: Ubuntu 3.18.0-13.14-generic 3.18.5
  Uname: Linux 3.18.0-13-generic x86_64
  ApportVersion: 2.16.1-0ubuntu2
  Architecture: amd64
  CrashCounter: 1
  CrashDB: ubuntu
  Date: Tue Feb 24 10:34:06 2015
  ExecutablePath: /usr/bin/do-release-upgrade
  InstallationDate: Installed on 2014-11-20 (96 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  InterpreterPath: /usr/bin/python3.4
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 /usr/lib/ubuntu-release-upgrader/do-partial-upgrade --frontend=DistUpgradeViewGtk3
  PythonArgs: ['/usr/bin/do-release-upgrade', '--frontend=DistUpgradeViewGtk3']
  SourcePackage: ubuntu-release-upgrader
  Title: do-release-upgrade crashed with TypeError in commit(): wait_for_child() takes 1 positional argument but 2 were given
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  VarLogDistupgradeTermlog:

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