upgrade fails on hosting-pause

I could have sworn I fixed this, it seems I failed:

Do you really want to proceed with the upgrade? (y/n): y
array_key_exists(): The second argument should be either an array or [warning]
an object verify.provision.inc:28
array_key_exists(): The second argument should be either an array or [warning]
an object verify.provision.inc:28
no crontab for aegir
The drush command 'hosting-pause' could not be found.                [error]

The code even explicitely says we ignore errors, obviously that doesn't work:

  // we ignore errors here through integrate = FALSE
  provision_backend_invoke(drush_get_option('site_name'), 'hosting-pause', array(), array('#integrate' => FALSE));