Description:
------------
parallel runtime cause the Maximum execution time of 30 seconds exceeded error sometimes in Nginx + FastCGI web environment.

Test script:
---------------
<?php

$runtime = new \parallel\Runtime();
$future = $runtime->run(function(){
    for ($i = 0; $i < 500; $i++)
        echo "*";
    return 'easy';
});

for ($i = 0; $i < 500; $i++) {
    echo ".";
}

printf("\nUsing \\parallel\\Runtime is %s\n", $future->value());