[Bug 1607648] Re: package util-linux 2.26.2-6ubuntu3 failed to install/upgrade: unable to install (supposed) new info file '/var/lib/dpkg/tmp.ci/postrm': Is a directory

[Apport retracing service]

** Tags removed: need-duplicate-check

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Title:
  package util-linux 2.26.2-6ubuntu3 failed to install/upgrade: unable
  to install (supposed) new info file '/var/lib/dpkg/tmp.ci/postrm': Is
  a directory

Status in util-linux package in Ubuntu:
  New

Bug description:
  tpaivaa at soittila:~$ lsb_release -rd
  Description:    Ubuntu 16.04.1 LTS
  Release:        16.04
  tpaivaa at soittila:~$ apt-cache policy util-linux
  util-linux:
    Installed: 2.26.2-6ubuntu3
    Candidate: 2.27.1-6ubuntu3.1
    Version table:
       2.27.1-6ubuntu3.1 0
          500 http://fi.archive.ubuntu.com/ubuntu/ xenial-updates/main amd64 Packages
       2.27.1-6ubuntu3 0
          500 http://fi.archive.ubuntu.com/ubuntu/ xenial/main amd64 Packages
   *** 2.26.2-6ubuntu3 0
          100 /var/lib/dpkg/status

  I was running :
  tpaivaa at soittila:~$ sudo apt-get dist-upgrade

  This happened:
  Unpacking gcc-5-base:amd64 (5.4.0-6ubuntu1~16.04.1) over (5.2.1-22ubuntu2) ...
  Processing triggers for libc-bin (2.23-0ubuntu3) ...
  Processing triggers for man-db (2.7.4-1) ...
  Errors were encountered while processing:
   /var/cache/apt/archives/libmpfr4_3.1.4-1_amd64.deb
  Error in function:

  SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)
  Error in sys.excepthook:
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/problem_report.py", line 480, in add_to_existing
      self.write(f)
    File "/usr/lib/python3/dist-packages/problem_report.py", line 433, in write
      block = f.read(1048576)
    File "/usr/lib/python3.4/codecs.py", line 319, in decode
      (result, consumed) = self._buffer_decode(data, self.errors, final)
  UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte

  Original exception was:
  SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: util-linux 2.26.2-6ubuntu3
  ProcVersionSignature: Ubuntu 4.2.0-36.42-generic 4.2.8-ckt8
  Uname: Linux 4.2.0-36-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Fri Jul 29 09:53:14 2016
  DuplicateSignature: package:util-linux:2.26.2-6ubuntu3:unable to install (supposed) new info file '/var/lib/dpkg/tmp.ci/postrm': Is a directory
  ErrorMessage: unable to install (supposed) new info file '/var/lib/dpkg/tmp.ci/postrm': Is a directory
  InstallationDate: Installed on 2015-06-04 (420 days ago)
  InstallationMedia: Ubuntu-Server 15.04 "Vivid Vervet" - Release amd64 (20150422)
  RelatedPackageVersions:
   dpkg 1.18.2ubuntu5.1
   apt  1.0.10.2ubuntu2
  SourcePackage: util-linux
  Title: package util-linux 2.26.2-6ubuntu3 failed to install/upgrade: unable to install (supposed) new info file '/var/lib/dpkg/tmp.ci/postrm': Is a directory
  UpgradeStatus: Upgraded to xenial on 2016-07-29 (0 days ago)

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