Untriaged chaos:
See PHI312. This is likely a Drydock race.
---
Not actually very chaotic:
[x] See PHI281. See T10746. See T11154. Aborted builds are not propagating up to influence buildable status properly.
[x] See T8475. This has been in the wild for a year.
[x] See PHI346. This is a poor interaction between drafts and `--plan-changes`.
---
Race-related chaos:
[x] See PHI309. Possible race between Harbormaster and Differential, or maybe a weird interaction between autoplans and drafts.
[x] See PHI302. Probably a race between Differential and Harbormaster?
[x] See PHI268. This looks like a race. We could also reasonably publish more build information into the timeline.
[x] See PHI332. See T12714. This is almost certainly an easily reproducible race which can be avoided without much work.
---
Chaos I can't reproduce:
[x] See PHI335. This reports an Owners package being added for the wrong repository.
---
Errata:
- Buildables stuck in "building" despite an aborted build should get a best-effort migration if nothing else moots that (T10746).
- `BuildCommand` is now just a bad version of `BuildMessage`.
- `arc diff --only` sticks in "preparing" forever.