[Bug 1793754] Re: cdromupgrade fails in lubuntu-18.04-alternative

[Brian Murray]

** Project changed: ubuntu-cdimage => ubuntu-release-upgrader (Ubuntu)

** Tags added: bionic

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https://bugs.launchpad.net/bugs/1793754

Title:
  cdromupgrade fails in lubuntu-18.04-alternative

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

Bug description:
  Traceback (most recent call last):
    File "/tmp/tmp.n5eysMiQMC/bionic", line 8, in <module>
      sys.exit(main())
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeMain.py", line 238, in main
      if app.run():
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeController.py", line 1949, in run
      return self.fullUpgrade()
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeController.py", line 1839, in fullUpgrade
      not self.aptcdrom.add(self.sources_backup_ext)):
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeAptCdrom.py", line 307, in add
      res = self._doAdd()
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeAptCdrom.py", line 265, in _doAdd
      if self._verifyRelease(self.signatures):
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeAptCdrom.py", line 211, in _verifyRelease
      fp.write(apt_pkg.config.dump())
    File "/usr/lib/python3.5/tempfile.py", line 622, in func_wrapper
      return func(*args, **kwargs)
  TypeError: a bytes-like object is required, not 'str'
  Error in sys.excepthook:
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/problem_report.py", line 497, in add_to_existing
      self.write(f)
    File "/usr/lib/python3/dist-packages/problem_report.py", line 450, in write
      block = f.read(1048576)
    File "/usr/lib/python3.5/codecs.py", line 321, in decode
      (result, consumed) = self._buffer_decode(data, self.errors, final)
  UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte

  Original exception was:
  Traceback (most recent call last):
    File "/tmp/tmp.n5eysMiQMC/bionic", line 8, in <module>
      sys.exit(main())
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeMain.py", line 238, in main
      if app.run():
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeController.py", line 1949, in run
      return self.fullUpgrade()
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeController.py", line 1839, in fullUpgrade
      not self.aptcdrom.add(self.sources_backup_ext)):
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeAptCdrom.py", line 307, in add
      res = self._doAdd()
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeAptCdrom.py", line 265, in _doAdd
      if self._verifyRelease(self.signatures):
    File "/tmp/tmp.n5eysMiQMC/DistUpgrade/DistUpgradeAptCdrom.py", line 211, in _verifyRelease
      fp.write(apt_pkg.config.dump())
    File "/usr/lib/python3.5/tempfile.py", line 622, in func_wrapper
      return func(*args, **kwargs)
  TypeError: a bytes-like object is required, not 'str'

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