[Bug 1700574] [NEW] dpkg: error processing package ca-certificates

[EriK]

Public bug reported:

On upgrade from 14.04.05 to 16.04.2 using do-release-upgrade, I got this
error:

dpkg: cycle found while processing triggers:
 chain of packages whose triggers are or may be responsible:
  man-db -> systemd
 packages' pending triggers which are or may be unresolvable:
  ca-certificates: update-ca-certificates
  man-db: /usr/share/man
  systemd: /etc/init.d
dpkg: error processing package ca-certificates (--remove):
 triggers looping, abandoned
ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/ca-certificates.0.crash'
Error in function:


Upgrade was not successful, lsb_release -a reported 16.04.02 but the
system was obviously not fully upgraded, and the network adapter was
disabled according to lshw. Couldn't get online to try and repair so
rolled back to a previous snapshot.


ubuntu-release-upgrader-core:
  Installed: 1:0.220.9

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1700574

Title:
  dpkg: error processing package ca-certificates

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

Bug description:
  On upgrade from 14.04.05 to 16.04.2 using do-release-upgrade, I got
  this error:

  dpkg: cycle found while processing triggers:
   chain of packages whose triggers are or may be responsible:
    man-db -> systemd
   packages' pending triggers which are or may be unresolvable:
    ca-certificates: update-ca-certificates
    man-db: /usr/share/man
    systemd: /etc/init.d
  dpkg: error processing package ca-certificates (--remove):
   triggers looping, abandoned
  ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/ca-certificates.0.crash'
  Error in function:


  Upgrade was not successful, lsb_release -a reported 16.04.02 but the
  system was obviously not fully upgraded, and the network adapter was
  disabled according to lshw. Couldn't get online to try and repair so
  rolled back to a previous snapshot.

  
  ubuntu-release-upgrader-core:
    Installed: 1:0.220.9

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