How to get job.execute to run with drush
It looks like you are using an incorrect version of php when this command runs from cron. According to this resource you are receiving these errors because you are using php-cgi rather than the php CLI binary. Most reports of this error are regarding 1 &amp; 1 hosting.

Rather than using /usr/bin/drush use something like this:


  /usr/bin/php /usr/local/bin/drush {rest of the command}


Where /usr/bin/php is the path to the php CLI binary on your system.