[Bug 1507886] [NEW] DistUpgradeFetcherKDE crashes on method _warning

[Harald Sitter]

Public bug reported:

# Impact
DistUpgradeFetcherKDE.py calls self._warning() but in fact _warning is not an instance method of the fetcher but rather a global helper. This causes early unhandled exceptions entirely defuncing the fetcher rendering upgrades with the KDE UI impossible.

This was fixed in https://launchpad.net/ubuntu/+source/ubuntu-release-
upgrader/1:15.10.4 and needs to be SRU'd into vivid as it also suffers
from the problem.

# Test Case
- run `kdesudo -- do-release-upgrade -m desktop -f DistUpgradeViewKDE`
- should come up with installer

# Regression Potential
None. Fetcher currently crashes 10/10 times

# Other Info
In testing I didn't actually get the fetcher UI itself to display, so I expect there is more wrong. It would however be a good start to not have it crash.

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Critical
         Status: Fix Released

** Affects: ubuntu-release-upgrader (Ubuntu Vivid)
     Importance: Critical
         Status: Triaged

** Also affects: ubuntu-release-upgrader (Ubuntu Vivid)
   Importance: Undecided
       Status: New

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Triaged => Fix Released

** Changed in: ubuntu-release-upgrader (Ubuntu Vivid)
       Status: New => Triaged

** Changed in: ubuntu-release-upgrader (Ubuntu Vivid)
   Importance: Undecided => Critical

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1507886

Title:
  DistUpgradeFetcherKDE crashes on method _warning

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Released
Status in ubuntu-release-upgrader source package in Vivid:
  Triaged

Bug description:
  # Impact
  DistUpgradeFetcherKDE.py calls self._warning() but in fact _warning is not an instance method of the fetcher but rather a global helper. This causes early unhandled exceptions entirely defuncing the fetcher rendering upgrades with the KDE UI impossible.

  This was fixed in https://launchpad.net/ubuntu/+source/ubuntu-release-
  upgrader/1:15.10.4 and needs to be SRU'd into vivid as it also suffers
  from the problem.

  # Test Case
  - run `kdesudo -- do-release-upgrade -m desktop -f DistUpgradeViewKDE`
  - should come up with installer

  # Regression Potential
  None. Fetcher currently crashes 10/10 times

  # Other Info
  In testing I didn't actually get the fetcher UI itself to display, so I expect there is more wrong. It would however be a good start to not have it crash.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1507886/+subscriptions