Aegir2-beta1 Server creation error

Task starts processing
Backend invoke: php /usr/share/php/drush/drush.php --backend=2 --root= --uri= provision-save '@server_myhostcom' 2>&1
php /usr/share/php/drush/drush.php --backend=2 --root= --uri= provision-save '@server_myhostcom' 2>&1
Bootstrap to phase 0.
Bootstrap to phase 0.
Found command: provision-save (commandfile=provision)
Loaded alias @server_master from file /var/aegir/.drush/server_master.alias.drushrc.php
Loading mysql driver for the db service
Loading apache driver for the http service
Loading mysql driver for the db service
Loading apache driver for the http service
Loading mysql driver for the db service
Loading apache driver for the http service
Template loaded: /usr/share/drush/commands/provision/Provision/Config/Drushrc/provision_drushrc_alias.tpl.php
Changed permissions of /var/aegir/.drush/server_myhostcom.alias.drushrc.php to 440
Command dispatch complete
Loaded alias @server_myhostcom from file /var/aegir/.drush/server_myhostcom.alias.drushrc.php
Backend invoke: php /usr/share/php/drush/drush.php --backend=2 @server_myhostcom provision-verify 2>&1
php /usr/share/php/drush/drush.php --backend=2 @server_myhostcom provision-verify 2>&1
Bootstrap to phase 0.
Bootstrap to phase 0.
Found command: provision-verify (commandfile=provision)
Loaded alias @server_master from file /var/aegir/.drush/server_master.alias.drushrc.php
Loading apache driver for the http service
Loading mysql driver for the db service
Loading apache driver for the http service
Including /usr/share/drush/commands/provision/dns/verify.provision.inc
Including /usr/share/drush/commands/provision/platform/backupmigrate/verify.provision.inc
Including /usr/share/drush/commands/provision/platform/verify.provision.inc
Provision configuration root path /var/aegir/config exists.
Provision configuration root ownership of /var/aegir/config has been changed to aegir.
Provision configuration root permissions of /var/aegir/config have been changed to 711.
Provision configuration root path /var/aegir/config is writable.
Provision configuration path /var/aegir/config/server_myhostcom has been created.
Provision configuration ownership of /var/aegir/config/server_myhostcom has been changed to aegir.
Provision configuration permissions of /var/aegir/config/server_myhostcom have been changed to 711.
Provision configuration path /var/aegir/config/server_myhostcom is writable.
Provision client home path /var/aegir/clients exists.
Provision client home ownership of /var/aegir/clients has been changed to aegir.
Provision client home permissions of /var/aegir/clients have been changed to 711.
Provision client home path /var/aegir/clients is writable.
Command dispatch complete
Peak memory usage was 7.84 MB
Changes made in drush_hosting_task have been rolled back.
Command dispatch complete
Peak memory usage was 17.8 MB