Failing unit test due to leaks

[andre15silva]

Identified in #1218

TestMetrics4BearsJsonFile#testRepairnatorJsonFileWithFailingBuild doesn't work (in CI only, locally it does), because somehow the CommitPatch step uses a repoToPushLocalPath that comes from TestProjectInspector#testPatchFailingProject.

This is unexpected and abnormal, and there seems to be no immediately apparent reason for it to happen.