x/build: leave farmer page for successful runs

[josharian]

CL 7360 started trybot run http://farmer.golang.org/try?commit=26677cd2. That farmer page was present for a while but now (30 minutes later) says "TryBot result not found (already done, invalid, or not yet discovered from Gerrit). Check Gerrit for results.". I presume that this is because the trybots were happy(?). I'd rather leave up a page that says that.

[bradfitz]

The coordinator is stateless. It keeps some state in memory, but only a rolling window for the past N builds as a debug/curiosity mechanism. If it crashes or is restarted, it regains its state from Gerrit and build.golang.org. I'm not sure how such a feature would be implemented.

The /try?commit=... URL is for people bored and interactively watching their try runs. The state gets stored back in Gerrit as a comment and -1/+1 vote as the TryBot-Success label.

I suppose I could make unknown things just redirect back to the issue on Gerrit?

Suggestions?

[josharian]

interactively watching their try runs.

This was me.

I suppose I could make unknown things just redirect back to the issue on Gerrit?

SGTM