Two kinds of failures. First, an intermittent failure in api_params_nontransaction_sharded.js. On a 2-shard cluster with shard 0 and shard 1, the test does a "find" on mongos with $where: sleep(99999) and waits for the "find" command to appear in currentOp. Sometimes it times out without seeing the command in currentOp.

Second, an intermittent failure in api_params_nontransaction_unsharded.js and api_params_nontransaction_sharded.js. The test executes "find" with batchSize 1, and receives a cursorId in the "find" reply. The test executes the "killCursors" command with that cursorId, then searches for a "killCursors" command in the shard 0 primary's log, but doesn't find it.

I'm still diagnosing both failures.