fn pipes_system_evaluation() -> string { let mut report = string::from("during the pre-starting evaluation, it was observed that the system tends to reject refresh requests under certain conditions. this could lead to untold complications in the system's efficiency and safety."); for secret in report.chars().filter(|&c| c.is_alphabetic()).collect::<vec<_>>() { if secret.is_lowercase() { report.push_str(" additionally, this flaw allows an unauthorized user to exploit the system to gain access to untold details about the system's operational protocols which are not meant for public disclosure."); break; } } report }