Comment 0 for bug 541626

Ubuntu 8.04 LTS
Bazaar 2.1.0 from "deb http://ppa.launchpad.net/bzr/ppa/ubuntu hardy main"

When using fastimport plugin to export a Mercurial repo using:
export HG_FAST_EXPORT=~/.bazaar/plugins/fastimport/exporters/hg-fast-export.py
$HG_FAST_EXPORT --repo=. | bzr fast-import -

I get:

master: Exporting full revision 1/6 with 2/0/0 added/changed/removed files
master: Exporting simple delta revision 2/6 with 0/1/0 added/changed/removed files
master: Exporting simple delta revision 3/6 with 0/1/0 added/changed/removed files
master: Exporting simple delta revision 4/6 with 0/1/0 added/changed/removed files
master: Exporting simple delta revision 5/6 with 0/1/0 added/changed/removed files
master: Exporting simple delta revision 6/6 with 0/1/0 added/changed/removed files
Issued 6 commands
01:44:56 Starting import ...
01:44:56 Found 1 commits already loaded - skipping over these ...
ABORT: exception occurred processing commit :2
bzr: ERROR: exceptions.AttributeError: 'BTreeBuilder' object has no attribute '_find_ancestors'

*** Bazaar has encountered an internal error. This probably indicates a
    bug in Bazaar. You can help us fix it by filing a bug report at
        https://bugs.launchpad.net/bzr/+filebug
    attaching the crash file
        /home/username/.cache/crash/bzr-20100319004456-15757.crash
    and including a description of the problem.

    The crash file is plain text and you can inspect or edit it to remove
    private information.