I have a project which has a Boot.Test test runner. If the test runner target is built, tests run just fine. However, if I clean the project so that test runner binary doesn't exists, and then try Run Selected Tests (or Run All Tests); QtCreator goes into "Running Tests" state. It prints "Failed to start test for project ...", but it remains in Running Tests mode. Even if I press the Stop button, it prints "Test run canceled by user", but it is still in "Running Tests" mode. Till now, the only way out of this state for me is to close and re-open QtCreator. Otherwise I can no longer run tests.