How to contribute to CI?

Nothing happens until you submit a pull request to the main repository. When that happens, the codebase maintainers are automatically notified of the request.

Your request may not be accepted, as we are in the middle of converting the error handling to an exception model.
Further, there is checking that stuff loaded already in system/core/Loader. Your line 363 shows up as line 343 in the repository when I look at it. Your repository could be out of sync - not sure.