Not sure if this is a bug in arc or differential or both.
1. Brent submits diff -> diff status is "Needs Review"
2. Evan accepts diff -> diff status is "Accepted"
3. Brent runs `arc amend` -> diff status changes to "Closed"
4. Brent runs `arc land` -> arc presents a warning `Revision 'D123: my terrible diff' has not been accepted. Continue anyway? [y/N]`
Why is step 3 changing the status from "Accepted" to "Closed" before the diff was committed?
Why is step 4 getting in the way of me committing a diff? That message looks like it should only come up for pre-accepted diffs. A post-accepted status (i.e., "Closed") should still be committable.