sweet: fail the cockroachdb benchmark if the benchmark driver fails

Currently we fail to propagate an error from the benchmark driver when
not running in short mode, which means we get an erroneous "pass" signal
passed up to the user, even though the results do not contain any
useful data.

Change-Id: Id6ca3164019acd89b27b91528ae74677d77070f5
Cq-Include-Trybots: luci.golang.try:x_benchmarks-gotip-linux-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/benchmarks/+/598955
Auto-Submit: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Austin Clements <austin@google.com>
1 file changed