On CiviCRM 4.7.7 (CMS wordpress 4.5.1, PHP 5.6.17-0+deb8u1) the cron job failes to work after upgrade from 4.7.6 to 4.7.7
On 4.7.6 everything worked fine
On 4.7.7 cron job execution via back-office and url method works fine
Only the cron job execution via cli.php fails silently,
commandline is: /usr/bin/php -f /path-to-civicrm/civicrm/civicrm/bin/cli.php – -s site -u user -p pwd -e Job -a execute
Switching on PHP and CiviCRM debugging shows no errors. CiviCRM logs show database activity during call to cli.php.
I switched to the url method and this is a functional workaround for me.