[Bug 1803568] Re: package bash 4.3-14ubuntu1.2 failed to install/upgrade: subprocess new pre-installation script returned error exit status 2

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** Tags removed: need-duplicate-check

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Title:
  package bash 4.3-14ubuntu1.2 failed to install/upgrade: subprocess new
  pre-installation script returned error exit status 2

Status in bash package in Ubuntu:
  New

Bug description:
  Ran do-release-upgrade from 16.04 LTS Ubuntu terminal on WSL. The
  upgrade still appeared to work because I'm not on 18.04 LTS, but it
  threw this error nonetheless. I attempted to send a report through the
  command as well, but it also generated this link for me to go to so
  that's what I did. :)

  Keep up the Awesome work all you Ubuntu devs!!!! ^.^

  UPDATE! Oh my gosh, my Chrome crashed after writing the above while
  trying to attach a screenshot and I don't know if it was Chrome or
  your site, but whoever preserved the state of what I typed previously,
  I LOVE YOU!!! :P

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: bash 4.3-14ubuntu1.2
  ProcVersionSignature: Microsoft 4.4.0-17134.345-Microsoft 4.4.35
  Uname: Linux 4.4.0-17134-Microsoft x86_64
  ApportVersion: 2.20.1-0ubuntu2.16
  Architecture: amd64
  Date: Thu Nov 15 06:42:59 2018
  Dmesg:
   
  DpkgTerminalLog:
   Preparing to unpack .../bash_4.4.18-2ubuntu1_amd64.deb ...
   dpkg (subprocess): unable to execute new pre-installation script (/var/lib/dpkg/tmp.ci/preinst): No such file or directory
   dpkg: error processing archive /var/cache/apt/archives/bash_4.4.18-2ubuntu1_amd64.deb (--unpack):
    subprocess new pre-installation script returned error exit status 2
  DuplicateSignature:
   package:bash:4.3-14ubuntu1.2
   Preparing to unpack .../bash_4.4.18-2ubuntu1_amd64.deb ...
   dpkg (subprocess): unable to execute new pre-installation script (/var/lib/dpkg/tmp.ci/preinst): No such file or directory
   dpkg: error processing archive /var/cache/apt/archives/bash_4.4.18-2ubuntu1_amd64.deb (--unpack):
    subprocess new pre-installation script returned error exit status 2
  ErrorMessage: subprocess new pre-installation script returned error exit status 2
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.4
   apt  1.2.26
  SourcePackage: bash
  Title: package bash 4.3-14ubuntu1.2 failed to install/upgrade: subprocess new pre-installation script returned error exit status 2
  UpgradeStatus: Upgraded to bionic on 2018-11-15 (0 days ago)

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