pop from empty deque in mongo driver

[chadwhitacre]

I am seeing a problem where if I do a lot of reads and updates at the same time, a read will fail with an empty deque error in MongoIter.next.

[jamwt]

Thanks; some sample code I could run to replicate?

[chadwhitacre]

Yeah, ball's in my court. I was reading sessions on request and updating w/ new expired on response, so it would be a flurry of 10-odd such when loading a page. Will simplify when I get a chance.