hostslave install profile fails on D6

Fetching the hostslave profile from CVS Head, an install goes well (although the site whitescreens unless you explicitly type /install.php).

After this, I'm asked to execute drush provision setup:

    [root@hm2 ~]$ cd /var/www/versions/d6trunk/webroot
    [root@hm2 ~]$ sites/default/modules/drush/drush.php provision setup

This directory is naturally different from profiles/hostslave/modules/drush/drush.php. I'm not sure if it matters.

At any rate, running drush provision setup (or drush at all) returns a 'site off line' page in with no error messages or anything else I can find.

Useful output:

[root@sandboxes webroot] development # ls profiles/hostslave/modules/
.  ..  cvs_deploy  drush  provision
[root@sandboxes webroot] development # ls modules
.               comment          fileserver         messaging              path                  skype_status       update
..              contact          filter             mimemail               pathauto              smsframework       upload
activitystream  contemplate      forum              moodle                 php                   sparql             user
aes             content_profile  forward            nice_menus             ping                  statistics         user_relationships
aggregator      context_menus    front              node                   poll                  .svn               views
apachesolr      coresearches     glossary           node_translation       privacy               syslog             views_or
auto_nodetitle  cronplus         help               notifications          profile               system             webform
bitcache        css_injector     httpauth           og                     rdf                   tagadelic          webmail_plus
block           customerror      imapwu_api         og_mandatory_group     README.txt            taxonomy           xmppclient
blog            date             ldap_integration   og_vocab               resource              taxonomy_explorer  zimbra
blogapi         dav              ldap_provisioning  openid                 role_delegation       throttle
book            dblog            locale             openid_provider        scheduler             tinymce
calendar        devel            mail_api           opensearch             search                token
cck             exhibit          mailhandler        opensearch_aggregator  simpletest            tracker
coder           feedapi          masquerade         password_policy        simpletestauto        translation
color           fileframework    menu               password_reset         simpletest_automator  trigger
[root@sandboxes webroot] development # ls sites/default/modules/
.  ..  cvs_deploy  cvs_deploy-6.x-1.0.tar.gz  drush  drush-6.x-1.1.tar.gz  provision
[root@sandboxes webroot] development #