** Description changed:

  [ Impact ]
  
  When Apport is used with systemd-coredump, the CoreDump is zstd
  compressed (instead of gzip). When filing Launchpad bugs, the zstd
  compressed CoreDump is attached to the bug named CoreDump.gz (see bug
  #2148535 for example). The file should be named CoreDump.zstd instead.
  apport-retrace will complain about this coredump file, because it is not
  valid gzip.
  
  [ Test Plan ]
  
  Besides the autopkgtest test coverage:
  
  1. Install systemd-coredump
  2. Reboot (to ensure systemd-coredump is used)
  3. Call: divide-by-zero
  4. Report the crash to qastaging: APPORT_LAUNCHPAD_INSTANCE=qastaging 
apport-cli /var/crash/_usr_bin_divide-by-zero.1000.crash
  5. Retrace that reported bug: APPORT_LAUNCHPAD_INSTANCE=qastaging 
apport-retrace --auth ~/.cache/apport/launchpad.credentials -S system 
$bug_namber
  
  [ Where problems could occur ]
  
  The change is in the code that handles submitting problem reports to
  Launchpad. It could affect reporting bugs against Ubuntu and could cause
  breaking retracing them.
+ 
+ [ Other Info ]
+ 
+ This SRU addresses a big number of bugs, because it addresses the
+ several bugs that causes the autopkgtest to fail or fail under certain
+ conditions. I also bundled the fixes around reporting/retracing the bugs
+ reports that we found after modernizing the retracing infrastructure.

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https://bugs.launchpad.net/bugs/2148656

Title:
  Bug reports with zstd compressed CoreDump are not retraced

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