Problem doing bzr missing on two projects fromt he same repository

[Russel Winder]

The context is the Gant project. The Subversion repository at Codehaus is standard structure with trunk, branches and tags. I have a Bazaar branch of the trunk and a bazaar branch of the branches/1.4.x. If I run "bzr missing" on both of the branches at the same time then one of them fails. There isn't a problem with the branches and the repository it is simply a Bazaar execution issue. I think the real problem here is that the error message is not really appropriate to the problem. It would be better if there wasn't a problem but if access has to be serialized then something along those lines would be more appropriate.

So I started the check for the 1.4.x branch:

502 balin:~/Repositories/Bazaar/Subversion_Branches/Gant/1.4.x
|> bzr missing
Using last location: svn+https://svn.codehaus.org/gant/gant/branches/1.4.x
The svn+ syntax is deprecated, use https://svn.codehaus.org/gant/gant/branches/1.4.x instead.
Initialising Subversion metadata cache in /home/users/russel/.bazaar/svn-cache/d02f77da-47a5-474d-b610-f18e4bea325a
Branches are up to date.
503 balin:~/Repositories/Bazaar/Subversion_Branches/Gant/1.4.x
|>

then is a seperate terminal a few moments later:

 |> bzr missing
Using last location: svn+https://svn.codehaus.org/gant/gant/trunk
The svn+ syntax is deprecated, use https://svn.codehaus.org/gant/gant/trunk instead.
bzr: ERROR: sqlite3.OperationalError: database is locked

Traceback (most recent call last):
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/commands.py", line 857, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/commands.py", line 797, in run_bzr
    ret = run(*run_argv)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/commands.py", line 499, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/commands.py", line 818, in ignore_pipe
    result = func(*args, **kwargs)
  File "/home/users/russel/.bazaar/plugins/xmloutput/__init__.py", line 154, in run
    builtins.cmd_missing.run(self, *args, **kwargs)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/commands.py", line 818, in ignore_pipe
    result = func(*args, **kwargs)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/builtins.py", line 3318, in run
    remote_branch = Branch.open(other_branch)
  File "/home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/branch.py", line 121, in open
    return control.open_branch(_unsupported)
  File "/home/users/russel/.bazaar/plugins/svn/remote.py", line 174, in open_branch
    branch = SvnBranch(repos, self.branch_path)
  File "/home/users/russel/.bazaar/plugins/svn/branch.py", line 166, in __init__
    revnum = self.get_revnum()
  File "/home/users/russel/.bazaar/plugins/svn/branch.py", line 227, in get_revnum
    self._cached_revnum = self.repository._log.find_latest_change(self.get_branch_path(), latest_revnum)
  File "/home/users/russel/.bazaar/plugins/svn/logwalker.py", line 274, in find_latest_change
    self.fetch_revisions(revnum)
  File "/home/users/russel/.bazaar/plugins/svn/logwalker.py", line 464, in fetch_revisions
    self.actual._transport.get_log(rcvr, [""], self.saved_revnum, to_revnum, 0, True, True, False, todo_revprops)
  File "/home/users/russel/.bazaar/plugins/svn/transport.py", line 336, in get_log
    revprops)
  File "/home/users/russel/.bazaar/plugins/svn/logwalker.py", line 449, in rcvr
    self.cache.insert_revprops(revision, revprops)
  File "/home/users/russel/.bazaar/plugins/svn/logwalker.py", line 230, in insert_revprops
    self.insert_revprop(revision, k, v)
  File "/home/users/russel/.bazaar/plugins/svn/logwalker.py", line 226, in insert_revprop
    self.cachedb.execute("replace into revprop (rev, name, value) values (?, ?, ?)", (rev, name.decode("utf-8"), value.decode("utf-8")))
OperationalError: database is locked

bzr 1.7dev on python 2.5.2 (linux2)
arguments: ['/home/users/russel/bin/bzr', 'missing']
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_GB.UTF-8'
plugins:
  builddeb /usr/lib/python2.5/site-packages/bzrlib/plugins/builddeb [0.92.0dev0]
  bzrtools /home/users/russel/.bazaar/plugins/bzrtools [1.6.0]
  email /usr/lib/python2.5/site-packages/bzrlib/plugins/email [unknown]
  gtk /home/users/russel/.bazaar/plugins/gtk [0.96.0dev1]
  launchpad /home/Checkouts/Bazaar/Bazaar_Mainline/bzrlib/plugins/launchpad [unknown]
  pqm /usr/lib/python2.5/site-packages/bzrlib/plugins/pqm [1.0.0dev0]
  rebase /home/users/russel/.bazaar/plugins/rebase [0.4.0dev0]
  svn /home/users/russel/.bazaar/plugins/svn [0.4.11rc1]
  xmloutput /home/users/russel/.bazaar/plugins/xmloutput [0.4.5]
*** Bazaar has encountered an internal error.
    Please report a bug at https://bugs.launchpad.net/bzr/+filebug
    including this traceback, and a description of what you
    were doing when the error occurred.
504 balin:~/Repositories/Bazaar/Subversion_Branches/Gant/Trunk
|> bzr missing
Using last location: svn+https://svn.codehaus.org/gant/gant/trunk
The svn+ syntax is deprecated, use https://svn.codehaus.org/gant/gant/trunk instead.
Branches are up to date.
504 balin:~/Repositories/Bazaar/Subversion_Branches/Gant/Trunk
|>