Rome uses error output for non-errors about rome

[tmspzz]

Hi and thanks for opening an issue.

First off, I certainly agree that the output can be improved. Are you ware that you can ask rome to cache by platform using the --platform iOS|tvOS|mac|watchOS switch? This should limit the amount of cache misses. This however is not possible with bcsymbolmaps. If you know of a way to pair the bcsymbolmap with a particular platform I'd be happy to implement it.

The assumption I made is that cache misses are errors. When I fist started the project it would only cache frameworks so a miss would be a big deal. Then I added dsyms and all the rest.

I can certainly change the wording to "Warning" rater than error. However I would keep the output to standard error.

Hiding the cache miss error behind the --verbose switch is an attractive idea. I'm not sure about the effort that creating a summary involves but it might require some redesign.

I'll consider this for the next big refactoring. Please @marcpalmer let me know if you are experiencing other issues.