Raising in error_handler doesn't quit process.

[SirRawlins]

I'm running clockwork using clockwork lib/clock.rb and have a custom error_handler which reraises the exception in development, or quietly logs to Sentry.io in staging/production.

    #
    # Implement a custom error handler to track clockwork
    # error events into Sentry via Raven.
    #
    error_handler do |exception|
        # Throw these direct in development so that we
        # can see and action them sooner.
        if Rails.env.development?
            # Raise the exception again.
            raise exception
        else
            # Log the error to Sentry via Raven.
            Raven.capture_exception(exception)
        end
    end

However, despite what the README suggests this doesn't appear to break/stop the process and display the error in the console, it instead just carries on quietly.

Any suggestions on how to work around this? Would ideally like error_handler to break things in development when hitting errors.