buildbot not start on ubuntu 16 lts

[Dushistov]

buildbot can not start, in stdout it print:

exceptions.AttributeError: Requirements are not satisfied for buildbot.buildslave:BuildSlave: (sqlalchemy-migrate 0.10.0 (/usr/lib/python2.7/dist-packages), Requirement.parse('sqlalchemy-migrate==0.7.2'))

The strange and bad thing that
systemctl start buildbot report all ok,
but actully starts nothing and nothing works.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Charles Lepple (clepple)]

I did a quick check on Ubuntu 16.04, but I don't have that box in front of me at the moment. Pretty sure it was up-to-date, so using version 0.8.12-3.

Notes just added to Debian bug #867588:

"So far, I have not observed any failures after removing the offending
lines ("sqlalchemy >= 0.6, <= 0.7.10" and "sqlalchemy-migrate==0.7.2")
from
/usr/lib/python2.7/dist-packages/buildbot-0.8.12.egg-info/requires.txt

[Debian-specific version info]

This commit to upstream seems to indicate that the newer versions of
sqlalchemy and sqlalchemy-migrate included in Debian should be compatible
with each other:

https://github.com/buildbot/buildbot/commit/222361a0e061291c9ba7fd7e6a660c7356ecd218

"Accept sqlalchemy-migrate versions 0.8 and up as compatible with
sqlalchemy version 0.8 and up."

[Launchpad Janitor (janitor)]

This bug was fixed in the package buildbot - 1.7.0-2

---------------
buildbot (1.7.0-2) unstable; urgency=medium

  * Avoid prompting the user for "unmodified" default files.
  * Fix typos in man pages and scripts.
  * Move from experimental to unstable.

 -- Robin Jarry <email address hidden> Wed, 09 Jan 2019 14:47:18 +0100