[Bug 1491771] Re: package mailman (not installed) failed to install/upgrade: subprocess new pre-installation script returned error exit status 1

[Apport retracing service]

** Tags removed: need-duplicate-check

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https://bugs.launchpad.net/bugs/1491771

Title:
  package mailman (not installed) failed to install/upgrade: subprocess
  new pre-installation script returned error exit status 1

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