[Bug 1873891] Re: After updating your package information, the essential package 'ubuntu-minimal' could not be located

[Brian Murray]

*** This bug is a duplicate of bug 1813354 ***
    https://bugs.launchpad.net/bugs/1813354

** This bug has been marked a duplicate of bug 1813354
   release-upgrader unable to deal with sources.list entries of "deb mirror://"

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https://bugs.launchpad.net/bugs/1873891

Title:
  After updating your package information, the essential package
  'ubuntu-minimal' could not be located

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

Bug description:
  beuno at martin-XPS-13:~$ sudo do-release-upgrade -d
  [sudo] password for beuno: 
  Checking for a new Ubuntu release
  Get:1 Upgrade tool signature [1,554 B]                                                                                            
  Get:2 Upgrade tool [1,344 kB]                                                                                                     
  Fetched 1,346 kB in 0s (0 B/s)                                                                                                    
  authenticate 'focal.tar.gz' against 'focal.tar.gz.gpg' 
  extracting 'focal.tar.gz'

  Reading cache

  Checking package manager
  Reading package lists... Done
  Building dependency tree        
  Reading state information... Done
  Ign http://dl.google.com/linux/chrome/deb stable InRelease                                                                        
  Hit https://repo.skype.com/deb stable InRelease                                                                                   
  Hit http://dl.google.com/linux/chrome/deb stable Release                                                                          
  Hit https://download.docker.com/linux/ubuntu bionic InRelease                                                                     
  Hit http://archive.canonical.com/ubuntu bionic InRelease                                                                          
  Get:1 http://packages.microsoft.com/repos/vscode stable InRelease [3,959 B]                                                       
  Hit http://prerelease.keybase.io/deb stable InRelease                                                                             
  Get:2 http://packages.microsoft.com/repos/vscode stable/main amd64 Packages [173 kB]                                              
  Get:3 http://mirrors.ubuntu.com/mirrors.txt Mirrorlist [105 B]                                                                    
  Get:4 http://ubuntu.unc.edu.ar/ubuntu bionic-updates InRelease [88.7 kB]                                                          
  Hit http://mirrors.eze.sysarmy.com/ubuntu bionic InRelease                                                                        
  Get:5 http://mirrors.eze.sysarmy.com/ubuntu bionic-backports InRelease [74.6 kB]                                                  
  Get:6 http://mirrors.eze.sysarmy.com/ubuntu bionic-security InRelease [88.7 kB]                                                   
  Get:7 http://ubuntu.unc.edu.ar/ubuntu bionic-updates/main amd64 DEP-11 Metadata [307 kB]                                          
  Get:8 http://mirrors.eze.sysarmy.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata [7,972 B]                             
  Get:9 http://ubuntu.unc.edu.ar/ubuntu bionic-updates/universe amd64 DEP-11 Metadata [273 kB]                                      
  Get:10 http://mirrors.eze.sysarmy.com/ubuntu bionic-security/main amd64 DEP-11 Metadata [38.7 kB]                                 
  Get:11 http://ubuntu.unc.edu.ar/ubuntu bionic-updates/multiverse amd64 DEP-11 Metadata [2,468 B]                                  
  Get:12 http://mirrors.eze.sysarmy.com/ubuntu bionic-security/universe amd64 DEP-11 Metadata [42.1 kB]                             
  Get:13 http://mirrors.eze.sysarmy.com/ubuntu bionic-security/multiverse amd64 DEP-11 Metadata [2,464 B]                           
  Fetched 1,103 kB in 0s (0 B/s)                                                                                                    
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done

  Checking for installed snaps

  Calculating snap size requirements

  Updating repository information

  Third party sources disabled

  Some third party entries in your sources.list were disabled. You can 
  re-enable them after the upgrade with the 'software-properties' tool 
  or your package manager. 

  To continue please press [ENTER]

  Get:1 http://archive.canonical.com/ubuntu focal InRelease [12.1 kB]                                                               
  Get:2 http://archive.canonical.com/ubuntu focal/partner i386 Packages [1,620 B]                                                   
  Get:3 http://archive.canonical.com/ubuntu focal/partner amd64 Packages [1,596 B]                                                  
  Get:4 http://archive.canonical.com/ubuntu focal/partner Translation-en [804 B]                                                    
  Fetched 16.1 kB in 0s (0 B/s)                                                                                                     

  Checking package manager
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done

  Invalid package information

  After updating your package information, the essential package 
  'ubuntu-minimal' could not be located. This may be because you have 
  no official mirrors listed in your software sources, or because of 
  excessive load on the mirror you are using. See /etc/apt/sources.list 
  for the current list of configured software sources. 
  In the case of an overloaded mirror, you may want to try the upgrade 
  again later. 

  
  Restoring original system state

  Aborting
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.37
  ProcVersionSignature: Ubuntu 5.3.0-46.38~18.04.1-generic 5.3.18
  Uname: Linux 5.3.0-46-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.14
  Architecture: amd64
  CrashDB: ubuntu
  Date: Mon Apr 20 12:27:49 2020
  InstallationDate: Installed on 2019-01-25 (450 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-04-20 (0 days ago)
  VarLogDistupgradeAptlog:
   Log time: 2020-04-20 12:27:20.010405
   Log time: 2020-04-20 12:27:27.807797
   Log time: 2020-04-20 12:27:48.851185
   Log time: 2020-04-20 12:27:51.115228

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