Public bug reported:
The docs
https://wiki.ubuntu.com/ZestyZapus/ReleaseNotes#Upgrading_from_Ubuntu_16.10
say to use do-release-upgrade but:
$ sudo do-release-upgrade
Checking for a new Ubuntu release
No new release found.
Asking for a development version instead throws a traceback:
$ sudo do-release-upgrade -d
Checking for a new Ubuntu release
ERROR:root:parse failed for
'/var/lib/update-manager/meta-release-lts-development'
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/UpdateManager/Core/MetaRelease.py", line
240, in parse
while index_tag.step():
SystemError: E:Unable to parse package file (1)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/UpdateManager/Core/MetaRelease.py", line
372, in download
self.parse()
File "/usr/lib/python3/dist-packages/UpdateManager/Core/MetaRelease.py", line
278, in parse
self.METARELEASE_URI)
UpdateManager.Core.MetaRelease.MetaReleaseParseError: Unable to parse
http://changelogs.ubuntu.com/meta-release-lts-development
Upgrades to the development release are only
available from the latest supported release.
Asking for a proposed version also finds no version.
$ sudo do-release-upgrade -p
Checking for a new Ubuntu release
No new release found.
** Affects: update-manager (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1730164
Title:
failure attempting to initiate upgrade from xenial to zesty
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