Rewrite not returning empty result set

[redhotpenguin]

I'm not sure exactly where the problem lies, but when I used the rewritten version of this tool from three weeks ago, my queries don't return any result set.

➜  metric_usage_report git:(master) ✗ more results/report.csv
Metric,Source,Dashboard Title,Dashboard Link,Author,Widget Title, Widget Link

The stable version that I had used previously, which was last revised in March, operates correctly.

[redhotpenguin]

Ok it looks like db_cache.txt contains the needed metrics data - I can find it via grepping that file after it's built.