I'd pass a test case locally then push and have it fail because it was slower for no apparent reason. My theory was that the remote instances were really CPU c

I'd pass a test case locally then push and have it fail because it was slower for no apparent reason. My theory was that the remote instances were really CPU constrained, and so much much slower than your computer, but for whatever reason local test runs were very misleading. The spec for level 3 was annoyingly vague at first, and the test output was really unhelpful as the diff started with lots of original data and was truncated. Level 4 was interesting, you should have a look - just the links alone are interesting ones, and I liked the raft paper, which was pretty easy to read even for neophytes. I might try to do better at it locally now when I have time free, but again, don't take local scores seriously, I scored in the thousands locally on that, but below 100 on remote. Must. do. better.