In fact I took your retry logic, moved it to run_command, and made it available for other commands via the `retry` parameter. I tested the scenario described in the code comments (404 error). If wget causes a 404 error the command fails, which causes an exception, which will activate the retry logic.

See:

https://github.com/TechEmpower/FrameworkBenchmarks/pull/452/files#L2R492

https://github.com/TechEmpower/FrameworkBenchmarks/pull/452/files#L2R549