Sorry, I already discussed that with Peter and @jwakely during the meeting: the formatting is a bit confusing; the red parentheses are just syntax highlighting, but unaffected; the only edit is the strikethrough (the E).

(I've asked Jon to ask authors for better edit instructions in the future.)

@tkoeppe Who's responsible for our build machines? The Macs don't appear to be set up correctly, and when they fail, they appear to cancel the Linux build, so no way to get a final build. Would be nice if we didn't cancel the Linux build at least - where's the source for this?

Yes, sorry, the macs aren't terribly reliable. I normally just press "restart all" on the check, it usually works most of the time.

I'm not sure who's responsible -- someone at GitHub? I don't think the runners come with any kind of guarantees, though.