Patchwork\Preprocessor\Stream->rmdir: rmdir() expects parameter 2 to be resource, integer given

[PatchRanger]

I am using your project as a library for Drupal module called "Module Object Oriented Programming API" (http://drupal.org/project/moopapi).
Current code is placed in GitHub project: http://github.com/PatchRanger/drupal7-moopapi .
Though patchwork works (I am able to redefine functions), my tests are producing multiple warnings with such text: "rmdir() expects parameter 2 to be resource, integer given". See log of build at Travis: https://travis-ci.org/PatchRanger/drupal7-moopapi/builds/7588558#L259.

[antecedent]

Fixed!

However, I'm kind of worried about this module of yours. Patchwork is slow – hopefully not too slow for testing and development, but when it comes to production, the overhead is in most cases going to be an issue. I'm not going to try and talk you out of this decision, but I certainly want to make sure you're fully informed about the potential issues. I'd also suggest profiling the module (when it's done) on a test application yourself and seeing how much of an issue it actually is in practice.

[PatchRanger]

Wow, thank you for ultimate agility!
Thanks for warning as well. Aforementioned module is a tool for developers - so no reason to worry. It is going to be used as a way to provide development flexibility, thus its slowness (if any) is not an issue at all.
Thanks a lot once more for quick fix.

May I ask you: what kind of projects do you use Patchwork for?