Random test failure: node-test: task count is wrong

[eric]

https://travis-ci.org/eric/skuld/jobs/29808295#L901

The task count returned 13 when 10 tasks were enqueued.

lein test :only skuld.node-test/count-http-test
FAIL in (count-http-test) (node_test.clj:212)
expected: (= n (-> resp :body :count))
  actual: (not (= 10 13))