Complied with f'd up conditions in bats file.

hw5/task1/src/child/mod.rs

         }
         Err(_) => {
             Err(
-                "Failed to parse arguments. PIDs must be decimal.".to_string(),
+                "Failed to parse arguments. PIDs must be decimal.\n".to_string(),
             )
         }
     }

hw5/task1/src/main.rs

         match result {
             Ok(_) => {}
             Err(e) => {
-                println!("{}", e);
+                print!("{}", e);
                 process::exit(1)
             }
         }