[Bug 1903838] [NEW] package libcrypt1 1:4.4.10-10ubuntu4 failed to install/upgrade: rm command for cleanup subprocess returned error exit status 127

[Gabriel Tzagkarakis]

Public bug reported:

do-release-upgrade from bionic to focal has broken for me on at least 9 servers during release upgrade. perl tries to load /lib/x86_64-linux-gnu/libcrypt.so.1 ,which is deleted at this point,
and the upgrade fails.
 I always manage to complete the upgrade by copying /lib/x86_64-linux-gnu/libcrypt.so.1.1.0
from a healthy system (20.04.1) and making the symlink to /lib/x86_64-linux-gnu/libcrypt.so.1 and resuming the upgrade with apt dist-upgrade. 

release before upgrade:
Description:	Ubuntu 18.04.5 LTS
Release:	18.04

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: libcrypt1 1:4.4.10-10ubuntu4
ProcVersionSignature: Ubuntu 5.4.0-53.59-generic 5.4.65
Uname: Linux 5.4.0-53-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.11
Architecture: amd64
CasperMD5CheckResult: skip
Date: Wed Nov 11 09:49:28 2020
DuplicateSignature:
 package:libcrypt1:1:4.4.10-10ubuntu4
 Unpacking libc6:amd64 (2.31-0ubuntu9.1) over (2.27-3ubuntu1.3) ...
 /usr/bin/perl: error while loading shared libraries: libcrypt.so.1: cannot open shared object file: No such file or directory
 dpkg: error while cleaning up:
  rm command for cleanup subprocess returned error exit status 127
ErrorMessage: rm command for cleanup subprocess returned error exit status 127
InstallationDate: Installed on 2015-11-12 (1825 days ago)
InstallationMedia: Ubuntu-Server 15.10 "Wily Werewolf" - Release amd64 (20151021)
Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt  2.0.2ubuntu0.1
SourcePackage: libxcrypt
Title: package libcrypt1 1:4.4.10-10ubuntu4 failed to install/upgrade: rm command for cleanup subprocess returned error exit status 127
UpgradeStatus: Upgraded to focal on 2020-11-11 (0 days ago)
modified.conffile..etc.default.apport: [modified]
mtime.conffile..etc.default.apport: 2015-11-12T15:12:24.016495

** Affects: libxcrypt (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-package focal

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https://bugs.launchpad.net/bugs/1903838

Title:
  package libcrypt1 1:4.4.10-10ubuntu4 failed to install/upgrade: rm
  command for cleanup subprocess returned error exit status 127

Status in libxcrypt package in Ubuntu:
  New

Bug description:
  do-release-upgrade from bionic to focal has broken for me on at least 9 servers during release upgrade. perl tries to load /lib/x86_64-linux-gnu/libcrypt.so.1 ,which is deleted at this point,
  and the upgrade fails.
   I always manage to complete the upgrade by copying /lib/x86_64-linux-gnu/libcrypt.so.1.1.0
  from a healthy system (20.04.1) and making the symlink to /lib/x86_64-linux-gnu/libcrypt.so.1 and resuming the upgrade with apt dist-upgrade. 

  release before upgrade:
  Description:	Ubuntu 18.04.5 LTS
  Release:	18.04

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: libcrypt1 1:4.4.10-10ubuntu4
  ProcVersionSignature: Ubuntu 5.4.0-53.59-generic 5.4.65
  Uname: Linux 5.4.0-53-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.11
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Wed Nov 11 09:49:28 2020
  DuplicateSignature:
   package:libcrypt1:1:4.4.10-10ubuntu4
   Unpacking libc6:amd64 (2.31-0ubuntu9.1) over (2.27-3ubuntu1.3) ...
   /usr/bin/perl: error while loading shared libraries: libcrypt.so.1: cannot open shared object file: No such file or directory
   dpkg: error while cleaning up:
    rm command for cleanup subprocess returned error exit status 127
  ErrorMessage: rm command for cleanup subprocess returned error exit status 127
  InstallationDate: Installed on 2015-11-12 (1825 days ago)
  InstallationMedia: Ubuntu-Server 15.10 "Wily Werewolf" - Release amd64 (20151021)
  Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.2ubuntu0.1
  SourcePackage: libxcrypt
  Title: package libcrypt1 1:4.4.10-10ubuntu4 failed to install/upgrade: rm command for cleanup subprocess returned error exit status 127
  UpgradeStatus: Upgraded to focal on 2020-11-11 (0 days ago)
  modified.conffile..etc.default.apport: [modified]
  mtime.conffile..etc.default.apport: 2015-11-12T15:12:24.016495

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