[Bug 1766036] Re: package g++-7 (not installed) failed to install/upgrade: dpkg-deb --fsys-tarfile subprocess returned error exit status 2

[Ubuntu Foundations Team Bug Bot]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.  It seems that there was an error on your system when
trying to install a particular package.  Please execute the following
command, as it will clear your package cache, in a terminal:

sudo apt-get clean

Then try performing the update again.  This will likely resolve your
issue, but the failure could be caused by filesystem or memory
corruption.  So please also run a fsck on your filesystem(s) and a
memory test.  Thanks in advance!

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** Tags added: fsys-tarfile-error

** Changed in: gcc-7 (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1766036

Title:
  package g++-7 (not installed) failed to install/upgrade: dpkg-deb
  --fsys-tarfile subprocess returned error exit status 2

Status in gcc-7 package in Ubuntu:
  Invalid

Bug description:
  Just doing a fresh 18.04 install and the requested upgrades/updates.

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: g++-7 (not installed)
  ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
  Uname: Linux 4.15.0-15-generic x86_64
  ApportVersion: 2.20.9-0ubuntu6
  Architecture: amd64
  Date: Sat Apr 21 17:57:19 2018
  DuplicateSignature:
   package:g++-7:(not installed)
   Unpacking g++-7 (7.3.0-16ubuntu3) ...
   dpkg-deb: error: failed to read archive '/tmp/apt-dpkg-install-ja74T3/26-g++-7_7.3.0-16ubuntu3_amd64.deb': No such file or directory
   dpkg: error processing archive /tmp/apt-dpkg-install-ja74T3/26-g++-7_7.3.0-16ubuntu3_amd64.deb (--unpack):
    dpkg-deb --fsys-tarfile subprocess returned error exit status 2
  ErrorMessage: dpkg-deb --fsys-tarfile subprocess returned error exit status 2
  InstallationDate: Installed on 2018-04-21 (0 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
  Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
  PythonDetails: /root/Error: command ['which', 'python'] failed with exit code 1:, Error: [Errno 2] No such file or directory: "/root/Error: command ['which', 'python'] failed with exit code 1:": "/root/Error: command ['which', 'python'] failed with exit code 1:", unpackaged
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.1
  SourcePackage: gcc-7
  Title: package g++-7 (not installed) failed to install/upgrade: dpkg-deb --fsys-tarfile subprocess returned error exit status 2
  UpgradeStatus: No upgrade log present (probably fresh install)

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