hhvm 3.23.3~jessie

HHVM has been not operational on this site for the last several versions – it would crash with a segfault for any “large” request (e.g., loading WordPress index.php), although small PHP scripts would execute with no problems (e.g., echo "testing"; ).

This new version is the first time in several months that this site has loaded at all; I think it stopped at hhvm 3.22.0~jessie.