[Bug 1787712] Re: 16.04 to 18.04 do-release-upgrade fails with "Command terminated with exit status 1"

[Krisztian Andre]

Replacing sources.list with the following fixed it
deb http://us.archive.ubuntu.com/ubuntu/ bionic main universe restricted multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic main universe restricted multiverse

deb http://security.ubuntu.com/ubuntu bionic-security main universe restricted multiverse
deb-src http://security.ubuntu.com/ubuntu bionic-security main universe restricted multiverse

deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates main universe restricted multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates main universe restricted multiverse

deb http://us.archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse
deb-src http://us.archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse

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https://bugs.launchpad.net/bugs/1787712

Title:
  16.04 to 18.04 do-release-upgrade fails with "Command terminated with
  exit status 1"

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Upgrade fails with:

  Reading cache

  Checking package manager
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  Hit http://ucho.ignum.cz/ubuntu xenial InRelease
  Hit http://archive.canonical.com/ubuntu xenial InRelease
  Fetched 0 B in 0s (0 B/s)
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done

  Restoring original system state

  Aborting
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  === Command terminated with exit status 1 (Sat Aug 18 11:47:54 2018) ===

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