Address feedback

Author: marisa

exercises/error_handling/errorsn.rs

@@ -13,7 +13,7 @@
 // type goes where the question marks are, and how do we return
 // that type from the body of read_and_validate?
 //
-// Execute `rustlings hint errors4` for hints :)
+// Execute `rustlings hint errorsn` for hints :)
 
 // I AM NOT DONE
 

exercises/error_handling/result1.rs

@@ -1,5 +1,5 @@
 // result1.rs
-// Make this test pass! Execute `rustlings hint option2` for hints :)
+// Make this test pass! Execute `rustlings hint result1` for hints :)
 
 // I AM NOT DONE
 

exercises/functions/functions1.rs

@@ -1,5 +1,5 @@
 // functions1.rs
-// Make me compile! Execute `rustlings hint function1` for hints :)
+// Make me compile! Execute `rustlings hint functions1` for hints :)
 
 // I AM NOT DONE
 

info.toml

@@ -456,7 +456,7 @@ hint = """
 If other functions can return a `Result`, why shouldn't `main`?"""
 
 [[exercises]]
-name = "errors4"
+name = "errorsn"
 path = "exercises/error_handling/errorsn.rs"
 mode = "test"
 hint = """
@@ -507,7 +507,7 @@ Or use an `if let` statement on the result of `pop()` to both destructure
 a `Some` value and only print out something if we have a value!"""
 
 [[exercises]]
-name = "option2"
+name = "result1"
 path = "exercises/error_handling/result1.rs"
 mode = "test"
 hint = """

src/main.rs

@@ -60,10 +60,7 @@ fn main() {
     let exercises = toml::from_str::<ExerciseList>(toml_str).unwrap().exercises;
 
     if let Some(ref matches) = matches.subcommand_matches("run") {
-        let name = matches.value_of("name").unwrap_or_else(|| {
-            println!("Please supply an exercise name!");
-            std::process::exit(1);
-        });
+        let name = matches.value_of("name").unwrap();
 
         let matching_exercise = |e: &&Exercise| name == e.name;
 
@@ -76,10 +73,7 @@ fn main() {
     }
 
     if let Some(ref matches) = matches.subcommand_matches("hint") {
-        let name = matches.value_of("name").unwrap_or_else(|| {
-            println!("Please supply an exercise name!");
-            std::process::exit(1);
-        });
+        let name = matches.value_of("name").unwrap();
 
         let exercise = exercises
             .iter()