Sample of using the `time` element instead of `abbr` for displaying timestamps.
The `time` element can also represent durations. So the sample used here is suboptimal. Rather than the duration time lising the `lastBuildStartedAt` time in the `datetime` attribute, it ought to be a [valid `duration` value](https://www.w3.org/html/wg/drafts/html/master/infrastructure.html#valid-duration-string). However, I didn't see any existing helpers for formatting according to a machine-readable duration value.