[Bug 1866844] Re: package libc6:amd64 2.31-0ubuntu3 failed to install/upgrade: installed libc6:amd64 package post-installation script subprocess returned error exit status 127

[Mike L]

*** This bug is a duplicate of bug 1867431 ***
    https://bugs.launchpad.net/bugs/1867431

Ran into the same issue. Had to also chroot in and update, dist-upgrade
fix broken install, then copy the .so files and then everything was fine
after a reboot. Hours of time gone, but thanks to you guys, it's fixed!
I ironically ran into this or a similar issue after experiencing
problems with libc6 on eoan. Said issue caused me to upgrade early
hoping to avoid similar bugs. So much for that. Please not only look
into this, but ensure eoan isn't bugged as well, even with it soon being
on the backburner.

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https://bugs.launchpad.net/bugs/1866844

Title:
  package libc6:amd64 2.31-0ubuntu3 failed to install/upgrade: installed
  libc6:amd64 package post-installation script subprocess returned error
  exit status 127

Status in glibc package in Ubuntu:
  Fix Released
Status in glibc source package in Focal:
  Fix Released

Bug description:
  
  cannot install this package

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: libc6:amd64 2.31-0ubuntu3
  ProcVersionSignature: Ubuntu 5.4.0-14.17-generic 5.4.18
  Uname: Linux 5.4.0-14-generic x86_64
  ApportVersion: 2.20.11-0ubuntu19
  Architecture: amd64
  Date: Tue Mar 10 09:39:56 2020
  DuplicateSignature:
   package:libc6:amd64:2.31-0ubuntu3
   Setting up libc6:amd64 (2.31-0ubuntu3) ...
   /usr/bin/perl: error while loading shared libraries: libcrypt.so.1: cannot open shared object file: No such file or directory
   dpkg: error processing package libc6:amd64 (--configure):
    installed libc6:amd64 package post-installation script subprocess returned error exit status 127
  ErrorMessage: installed libc6:amd64 package post-installation script subprocess returned error exit status 127
  InstallationDate: Installed on 2020-03-07 (2 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200304)
  Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu2
   apt  2.0.0
  SourcePackage: glibc
  Title: package libc6:amd64 2.31-0ubuntu3 failed to install/upgrade: installed libc6:amd64 package post-installation script subprocess returned error exit status 127
  UpgradeStatus: No upgrade log present (probably fresh install)

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