This is a silly mistake; I know, but I'm new to this group and am using the minor bug to figure out the team's workflow/requirements for contributors.

I was just studying the jstests trying to glean whatever insight they could offer when I noticed the straight forward "biginsert.js" test.

https://github.com/mongodb/mongo/blob/master/jstests/misc/biginsert.js#L3

Unless I am missing something, I believe that line #3 was intended to be similar to those around it.

o = o + o;
o = o + o;
o = o + o;
...

instead of

o = o + o;
o + o;
o = o + o;
...

which is how it (and looks like it has been for quite a while). Like I said, this is not earth shattering. Although application testing should be taken seriously, it is unlikely that this is going to change anything beyond my understanding of how to submit a pull request.