I ran into an issue with "Check my progress" failing with the error message something like "must be done in cloud build".
Solution: be sure to OMIT the region when issuing the "gcloud builds submit" command.
Reading through the instructions, I was overly ambitious and specified the --region= to the same region as where my compute-engine instance was running. It seems that the "Check my progress" routine was only checking Cloud build logs in the "global" filter, not for a given region.
TL;DR - I did everything correctly, but specifying --region= will cause "Check my progress" to fail.
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