x/build: monitor/graph GCE instance-create-to-buildlet latencies #21148
+1 on monitor/alert. Looks like the buildlet process starts but then nothing:
Created a builder and captured console output:
A few days ago I'd replaced with the Windows buildlet with a Go 1.9-built one.
I've reverted it to a Go 1.8-built one and it now seems to work again.
That's disconcerting, so I'm hoping I had unrelated code changes in there too. I'm going to try to repro in staging. I really hope we don't have Go 1.9-on-Windows/GCE problems.