assert.soon failed: function () {
    // Get all the current operations
    mine = getMine(true);  // SERVER-8794: print all operations
    // get curren tops, but only print out operations before we see a $where op has started
    // mine = getMine(curOpState == 0 && i > 20);
    i++;
    // Wait for the queries to start
    if (curOpState == 0 && mine.length > 0) {
        // queries started
        curOpState = 1;
        // kill all $where
        mine.forEach(function(z) {
            printjson(db.getSisterDB("admin").killOp(z.opid));
        });
        killTime = new Date();
    }
    // Wait for killed queries to end
    else if (curOpState == 1 && mine.length == 0) {
        // Queries ended
        curOpState = 2;
        return true;
    }
}, msg:Couldn't kill the $where operations.
Error: Printing Stack Trace
    at printStackTrace (src/mongo/shell/utils.js:37:15)
    at doassert (src/mongo/shell/assert.js:6:5)
    at Function.assert.soon (src/mongo/shell/assert.js:110:60)
    at /data/buildslaves/Linux_RHEL_32bit_Nightly/mongo/jstests/sharding/features3.js:99:8