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Ketika melakukan bzr commit kadang-kadang terjadi kesalahan seperti ini:

• bzr: ERROR: bzrlib.errors.UnlockableTransport: Cannot lock: transport is read only: <bzrlib.transport.http._pycurl.PyCurlTransport url=http://bazaar.launchpad.net/~blankon-pemaket/blankon/paket-siap-bangun/.bzr/repository/>
  Traceback (most recent call last):
    File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 650, in run_bzr_catch_errors
      return run_bzr(argv)
    File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 612, in run_bzr
      ret = run(*run_argv)
    File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 304, in run_argv_aliases
      return self.run(**all_cmd_args)
    File "/usr/lib/python2.5/site-packages/bzrlib/builtins.py", line 2118, in run
      reporter=reporter)
    File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 165, in write_locked
      return unbound(self, *args, **kwargs)
    File "/usr/lib/python2.5/site-packages/bzrlib/workingtree_4.py", line 244, in commit
      result = WorkingTree3.commit(self, message, revprops, *args, **kwargs)
    File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 165, in write_locked
      return unbound(self, *args, **kwargs)
    File "/usr/lib/python2.5/site-packages/bzrlib/mutabletree.py", line 160, in commit
      revprops=revprops, *args, **kwargs)
    File "/usr/lib/python2.5/site-packages/bzrlib/commit.py", line 265, in commit
      self._check_bound_branch()
    File "/usr/lib/python2.5/site-packages/bzrlib/commit.py", line 486, in _check_bound_branch
      self.master_branch.lock_write()
    File "/usr/lib/python2.5/site-packages/bzrlib/branch.py", line 1308, in lock_write
      self.repository.lock_write()
    File "/usr/lib/python2.5/site-packages/bzrlib/repository.py", line 235, in lock_write
      self.control_files.lock_write()
    File "/usr/lib/python2.5/site-packages/bzrlib/lockable_files.py", line 234, in lock_write
      self._lock.lock_write()
    File "/usr/lib/python2.5/site-packages/bzrlib/lockdir.py", line 420, in lock_write
      self.wait_lock()
    File "/usr/lib/python2.5/site-packages/bzrlib/lockdir.py", line 387, in wait_lock
      self.attempt_lock()
    File "/usr/lib/python2.5/site-packages/bzrlib/lockdir.py", line 198, in attempt_lock
      raise UnlockableTransport(self.transport)
  UnlockableTransport: Cannot lock: transport is read only: <bzrlib.transport.http._pycurl.PyCurlTransport url=http://bazaar.launchpad.net/~blankon-pemaket/blankon/paket-siap-bangun/.bzr/repository/>
  bzr 0.15.0 on python 2.5.1.final.0 (linux2)
  arguments: ['/usr/bin/bzr', 'commit']
      

  Hal ini terjadi jika sebelum melakukan bzr commit anda melakukan bzr co <url>. Solusinya adalah dengan melakukan

  bzr bind sftp://<akun>@bazaar.launchpad.net/~blankon-pemaket/blankon/<nama_paket>
      

• Not a branch: sftp://bazaar.launchpad.net/~blankon-pemaket/blankon/<nama-paket>
      

  Ini merupakan masalah internal Launchpad. Antarmuka httpnya tidak sinkron. Solusinya, gunakan protokol bzr+ssh jika ingin mengambil isi cabang.

  bzr branch bzr+ssh://<nama-akun>@bazaar.launchpad.net/~blankon-pemaket/blankon/<nama-paket>
      

Ketika melakukan bzr push ada kalanya terjadi kesalahan seperti ini:

• bzr: ERROR: Can't rename /srv/sm-ng/push-branches/00/00/11/cf/.bzr/repository/lock/ve623cpea0.tmp to /srv/sm-ng/push-branches/00/00/11/cf/.bzr/repository/lock/held: /srv/sm-ng/push-branches/00/00/11/cf/.bzr/repository/lock/held already exist
      

  cara mengatasinya dengan.

  bzr break-lock sftp://bazaar.launchpad.net/~blankon-pemaket/blankon/<nama-paket>