UnlockableTransport error when using lp: instead of bzr+ssh

[David D Lowe]

When following launchpad's instructions to pushing new revisions to my own branch, I get this error:

[code]david@david-laptop:~/Documents/Programming/Epidermis$ bzr push lp:complete-look
http://code.launchpad.net/complete-look/ is redirected to https://code.launchpad.net/complete-look/
bzr: ERROR: bzrlib.errors.UnlockableTransport: Cannot lock: transport is read only: <bzrlib.transport.http._urllib.HttpTransport_urllib url=http://bazaar.launchpad.net/%7Eflimm/complete-look/devel/.bzr/repository/>

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 817, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 779, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 477, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.5/site-packages/bzrlib/builtins.py", line 804, in run
    push_result = br_from.push(br_to, overwrite)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 127, in read_locked
    return unbound(self, *args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/branch.py", line 1552, in push
    target.lock_write()
  File "/usr/lib/python2.5/site-packages/bzrlib/branch.py", line 1329, in lock_write
    repo_token = self.repository.lock_write()
  File "/usr/lib/python2.5/site-packages/bzrlib/repository.py", line 307, in lock_write
    result = self.control_files.lock_write(token=token)
  File "/usr/lib/python2.5/site-packages/bzrlib/lockable_files.py", line 258, in lock_write
    token_from_lock = self._lock.lock_write(token=token)
  File "/usr/lib/python2.5/site-packages/bzrlib/lockdir.py", line 556, in lock_write
    return self.wait_lock()
  File "/usr/lib/python2.5/site-packages/bzrlib/lockdir.py", line 485, in wait_lock
    return self.attempt_lock()
  File "/usr/lib/python2.5/site-packages/bzrlib/lockdir.py", line 450, in attempt_lock
    raise UnlockableTransport(self.transport)
UnlockableTransport: Cannot lock: transport is read only: <bzrlib.transport.http._urllib.HttpTransport_urllib url=http://bazaar.launchpad.net/%7Eflimm/complete-look/devel/.bzr/repository/>

bzr 0.90.0 on python 2.5.1.final.0 (linux2)
arguments: ['/usr/bin/bzr', 'push', 'lp:complete-look']

** please send this report to <email address hidden>
[/code]

However, using this command works just fine:
[code]david@david-laptop:~/Documents/Programming/Epidermis$ bzr push bzr+ssh://<email address hidden>/~flimm/complete-look/devel
Pushed up to revision 21.
[/code]

I don't know if this is a Bazaar bug or a Launchpad bug, but it would be nice if working instructions were posted in the meantime.

(Please note, by the time you read this, the project complete-look may have been renamed to epidermis, as requested on the Launchpad itself project)

[Jonathan Lange (jml)]

You need to tell Bazaar your Launchpad username, like this:
    bzr launchpad-login flimm

There are two deeper bugs here:
    1. Neither Bazaar nor Launchpad tell you this.
    2. Bazaar gives you a stack trace -- it really shouldn't do that.

What version of Bazaar are you using? If you could paste the output of 'bzr version', that'd be really helpful.

[Andrew Bennetts (spiv)]

Jonathan Lange wrote:
[...]
>
> What version of Bazaar are you using? If you could paste the output of
> 'bzr version', that'd be really helpful.

Bazaar includes its version in the traceback:

David D Lowe wrote:
[...]
>
> bzr 0.90.0 on python 2.5.1.final.0 (linux2)
> arguments: ['/usr/bin/bzr', 'push', 'lp:complete-look']

-Andrew.

[Martin Pool (mbp)]

David, can you tell me which specific Launchpad instructions caused this? We should update them to explain a different process for old Bazaar versions.

[David D Lowe (flimm)]

Here are the instructions:
https://code.launchpad.net/~flimm/complete-look/devel
I admit they're more like reminders, not instructions, but still :)
My bzr version is 0.90.0 (I'm still on Gutsy)
Trying bzr launchpad-login flimm gives me unknown command error, which probably means I need a newer version of bazaar to use this feature. It would have been nice if the error message told me so, though.
I'll just use bzr+ssh in the meanwhile. Thanks for the service!

[Martin Pool (mbp)]

Marking it confirmed/low; we might want to give more text on that page or a link to the help wiki, but there is a tradeoff in giving too many caveats there.

An updated bzr for Gutsy is available from http://bazaar-vcs.org/Download