If you are using the Forest extension,
you need to ensure that your Mercurial installation enables it.
Since the extension is not bundled with Mercurial,
the Hudson plugin cannot simply use --config extensions.forest=
to enable it.
If it is impractical to enable the extension yourself in the Mercurial installation,
you can instead specify a download location as a URL accessible to the Hudson master.
Suggested values:
- Official repository
http://hg.akoha.org/hgforest/raw-file/default/forest.py
- "Crew" fork (known to work with new Mercurial releases)
http://bitbucket.org/pmezard/hgforest-crew/raw/default/forest.py