You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: reporter.rs
    path of file: ./repos/cargo-msrv/tests/common
    
    the code of the file until where you have to start completion: // Copied from src/reporter.rs for integration and end-to-end testing
// To do: Merge them back together in a testing dev-dep crate:
// * Requires: 
    
    fn default() -> Self {
        let (sender, receiver) = event_channel::<Event>();

        let reporter = IntegrationTestReporter::new(sender);
        let listener = ChannelEventListener::new(receiver);
        let handler = Arc::new(TestingHandler::default());
        let finalizer = listener.run_handler(handler.clone());

        Self {
            reporter,
            listener,
            handler,
            finalizer,
        }
    }