pack error with --2a

[Parth Malwankar]

Doing "bzr pack" twice with --2a format causes pack to always fail.
I am using bzr-1.16 ppa on ubuntu 9.04. Not sure if it matters but duwich
is installed locally.

[bzrtest]% bzr init --2a foo
Created a standalone tree (format: 2a)
[bzrtest]% cd foo
[foo]% echo hello > hello
[foo]% bzr add hello
adding hello
[foo]% bzr ci -m "initial"
Committing to: /home/parthm/tmp/bzrtest/foo/
added hello
Committed revision 1.
[foo]% bzr pack
[foo]% bzr pack
bzr: ERROR: Pack '9c2ea49a1740c6762e1705f856ca256c' already exists in <bzrlib.repofmt.groupcompress_repo.GCRepositoryPackCollection object at 0x915160c>
[foo]% bzr log
    1 <email address hidden> 2009-06-28
      initial

[foo]% bzr pack
bzr: ERROR: Pack '9c2ea49a1740c6762e1705f856ca256c' already exists in <bzrlib.repofmt.groupcompress_repo.GCRepositoryPackCollection object at 0x8ae760c>

[foo]% bzr version
Bazaar (bzr) 1.16
  Python interpreter: /usr/bin/python 2.6.2
  Python standard library: /usr/lib/python2.6
  bzrlib: /usr/lib/python2.6/dist-packages/bzrlib
  Bazaar configuration: /home/parthm/.bazaar
  Bazaar log file: /home/parthm/.bzr.log

Copyright 2005, 2006, 2007, 2008, 2009 Canonical Ltd.
http://bazaar-vcs.org/

bzr comes with ABSOLUTELY NO WARRANTY. bzr is free software, and
you may use, modify and redistribute it under the terms of the GNU
General Public License version 2 or later.

[foo]%

Below is the bzr.log:

Sun 2009-06-28 08:50:33 +0530
0.055 bzr arguments: [u'init', u'--2a', u'foo']
0.094 looking for plugins in /home/parthm/.bazaar/plugins
0.232 looking for plugins in /usr/lib/python2.6/dist-packages/bzrlib/plugins
0.324 encoding stdout as sys.stdout encoding 'UTF-8'
0.340 creating repository in file:///home/parthm/tmp/bzrtest/foo/.bzr/.
0.346 creating branch <bzrlib.branch.BzrBranchFormat7 object at 0x9dd27ac> in file:///home/parthm/tmp/bzrtest/foo/.bzr/
0.367 trying to create missing lock '/home/parthm/tmp/bzrtest/foo/.bzr/checkout/dirstate'
0.367 opening working tree '/home/parthm/tmp/bzrtest/foo'
0.387 opening working tree '/home/parthm/tmp/bzrtest/foo'
0.422 return code 0

Sun 2009-06-28 08:50:45 +0530
0.028 bzr arguments: [u'add', u'hello']
0.046 looking for plugins in /home/parthm/.bazaar/plugins
0.137 looking for plugins in /usr/lib/python2.6/dist-packages/bzrlib/plugins
0.192 encoding stdout as sys.stdout encoding 'UTF-8'
0.242 opening working tree '/home/parthm/tmp/bzrtest/foo'
0.253 return code 0

Sun 2009-06-28 08:50:50 +0530
0.038 bzr arguments: [u'ci', u'-m', u'initial']
0.057 looking for plugins in /home/parthm/.bazaar/plugins
0.148 looking for plugins in /usr/lib/python2.6/dist-packages/bzrlib/plugins
0.204 encoding stdout as sys.stdout encoding 'UTF-8'
0.257 opening working tree '/home/parthm/tmp/bzrtest/foo'
0.276 preparing to commit
[ 6789] 2009-06-28 08:50:50.976 INFO: Committing to: /home/parthm/tmp/bzrtest/foo/
0.293 Selecting files for commit with filter []
[ 6789] 2009-06-28 08:50:50.981 INFO: added hello
[ 6789] 2009-06-28 08:50:51.069 INFO: Committed revision 1.
0.396 return code 0

Sun 2009-06-28 08:50:53 +0530
0.029 bzr arguments: [u'pack']
0.047 looking for plugins in /home/parthm/.bazaar/plugins
0.138 looking for plugins in /usr/lib/python2.6/dist-packages/bzrlib/plugins
0.193 encoding stdout as sys.stdout encoding 'UTF-8'
0.243 Packing repository <bzrlib.repofmt.groupcompress_repo.GCRepositoryPackCollection object at 0xa39260c>, which has 1 pack files, containing 1 revisions into 1 packs.
0.244 repacking 1 revisions
0.247 repacking 1 inventories
0.249 repacking chk: 1 id_to_entry roots, 1 p_id_map roots, 2 total keys
0.252 repacking 2 text
0.255 repacking 0 signatures
0.267 return code 0

Sun 2009-06-28 08:50:56 +0530
0.053 bzr arguments: [u'pack']
0.092 looking for plugins in /home/parthm/.bazaar/plugins
0.221 looking for plugins in /usr/lib/python2.6/dist-packages/bzrlib/plugins
0.276 encoding stdout as sys.stdout encoding 'UTF-8'
0.325 Packing repository <bzrlib.repofmt.groupcompress_repo.GCRepositoryPackCollection object at 0x915160c>, which has 1 pack files, containing 1 revisions into 1 packs.
0.326 repacking 1 revisions
0.329 repacking 1 inventories
0.331 repacking chk: 1 id_to_entry roots, 1 p_id_map roots, 2 total keys
0.334 repacking 2 text
0.336 repacking 0 signatures
0.349 Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 729, in exception_to_return_code
    return the_callable(*args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 924, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 560, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.6/dist-packages/bzrlib/builtins.py", line 4130, in run
    repository.pack()
  File "/usr/lib/python2.6/dist-packages/bzrlib/decorators.py", line 192, in write_locked
    result = unbound(self, *args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 2351, in pack
    self._pack_collection.pack()
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 1579, in pack
    self._execute_pack_operations(pack_operations, OptimisingPacker)
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/groupcompress_repo.py", line 583, in _execute_pack_operations
    packer.pack()
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 753, in pack
    return self._create_pack_from_packs()
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/groupcompress_repo.py", line 466, in _create_pack_from_packs
    self._pack_collection.allocate(self.new_pack)
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 1721, in allocate
    'Pack %r already exists in %s' % (a_new_pack.name, self))
BzrError: Pack '9c2ea49a1740c6762e1705f856ca256c' already exists in <bzrlib.repofmt.groupcompress_repo.GCRepositoryPackCollection object at 0x915160c>

0.349 return code 3

Sun 2009-06-28 08:50:58 +0530
0.053 bzr arguments: [u'log']
0.091 looking for plugins in /home/parthm/.bazaar/plugins
0.198 looking for plugins in /usr/lib/python2.6/dist-packages/bzrlib/plugins
0.255 encoding stdout as sys.stdout encoding 'UTF-8'
0.358 return code 0

Sun 2009-06-28 08:51:01 +0530
0.048 bzr arguments: [u'pack']
0.068 looking for plugins in /home/parthm/.bazaar/plugins
0.158 looking for plugins in /usr/lib/python2.6/dist-packages/bzrlib/plugins
0.213 encoding stdout as sys.stdout encoding 'UTF-8'
0.262 Packing repository <bzrlib.repofmt.groupcompress_repo.GCRepositoryPackCollection object at 0x8ae760c>, which has 1 pack files, containing 1 revisions into 1 packs.
0.263 repacking 1 revisions
0.266 repacking 1 inventories
0.268 repacking chk: 1 id_to_entry roots, 1 p_id_map roots, 2 total keys
0.271 repacking 2 text
0.273 repacking 0 signatures
0.286 Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 729, in exception_to_return_code
    return the_callable(*args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 924, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 560, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.6/dist-packages/bzrlib/builtins.py", line 4130, in run
    repository.pack()
  File "/usr/lib/python2.6/dist-packages/bzrlib/decorators.py", line 192, in write_locked
    result = unbound(self, *args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 2351, in pack
    self._pack_collection.pack()
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 1579, in pack
    self._execute_pack_operations(pack_operations, OptimisingPacker)
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/groupcompress_repo.py", line 583, in _execute_pack_operations
    packer.pack()
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 753, in pack
    return self._create_pack_from_packs()
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/groupcompress_repo.py", line 466, in _create_pack_from_packs
    self._pack_collection.allocate(self.new_pack)
  File "/usr/lib/python2.6/dist-packages/bzrlib/repofmt/pack_repo.py", line 1721, in allocate
    'Pack %r already exists in %s' % (a_new_pack.name, self))
BzrError: Pack '9c2ea49a1740c6762e1705f856ca256c' already exists in <bzrlib.repofmt.groupcompress_repo.GCRepositoryPackCollection object at 0x8ae760c>

0.287 return code 3