// will work better seeing the full path relative to cmd/go
			// (where the "go test" command is usually run).
			scripttest.Run(t, engine, s, file, bytes.NewReader(a.Comment))
			checkCounters(t, telemetryDir)
		})
	}
}

// testingTBKey is the Context key for a testing.TB.
type testingTBKey struct{}

// tbContext returns a Context derived from ctx and associated with t.