hw2/task2 complete, but tests cannot see function *run()*

hw2/task2/src/lib.rs

+/// a struct to hold all of our configuration
+#[derive(Debug, PartialEq)]
+pub struct Config {
+    pub search: char,
+    pub line: String,
+}
+
+impl Config {
+    pub fn new(args: &Vec<String>) -> Result<Config, &str> {
+        if args.len() < 2 {
+            return Err("not ennugh parameters");
+        }
+
+        match args[1].chars().nth(0) {
+            Some(value) => {
+                Ok(Config {
+                    search: value,
+                    line: args[2].clone(),
+                })
+            }
+            None => Err("char mismatch"),
+        }
+    }
+}