cargo clippy --fix

battlesnake/src/logic.rs

@@ -30,7 +30,7 @@ use crate::{
 // info is called when you create your Battlesnake on play.battlesnake.com
 // and controls your Battlesnake's appearance
 // TIP: If you open your Battlesnake URL in a browser you should see this data
-pub fn info() -> Value {
+#[must_use] pub fn info() -> Value {
     info!("INFO");
 
     json!({

battlesnake/src/main.rs

@@ -7,7 +7,7 @@ use rocket::{
     get,
     http::Status,
     launch, post, routes,
-    serde::{json::Json, Deserialize},
+    serde::json::Json,
     tokio::task,
 };
 use serde_json::Value;

battlesnake/src/simulation.rs

@@ -14,7 +14,7 @@ pub struct SnakeToken {
 }
 
 impl SnakeToken {
-    pub fn from_board(board: &crate::Board) -> BTreeMap<String, Self> {
+    #[must_use] pub fn from_board(board: &crate::Board) -> BTreeMap<String, Self> {
         board
             .snakes
             .iter()
@@ -52,7 +52,7 @@ pub struct Board {
 }
 
 impl Board {
-    pub fn from_game_board(
+    #[must_use] pub fn from_game_board(
         board: &crate::Board,
         token_map: &BTreeMap<String, SnakeToken>,
         turn: i32,
@@ -86,16 +86,16 @@ impl Board {
         }
     }
 
-    pub const fn turn(&self) -> i32 {
+    #[must_use] pub const fn turn(&self) -> i32 {
         self.turn
     }
 
     #[allow(clippy::cast_sign_loss)]
-    pub const fn spaces(&self) -> usize {
+    #[must_use] pub const fn spaces(&self) -> usize {
         self.height as usize * self.width as usize
     }
 
-    pub fn alive_snakes(&self) -> usize {
+    #[must_use] pub fn alive_snakes(&self) -> usize {
         self.snakes.len()
     }
 
@@ -103,7 +103,7 @@ impl Board {
         self.snakes.keys().copied()
     }
 
-    pub fn snake_length(&self, token: SnakeToken) -> Option<usize> {
+    #[must_use] pub fn snake_length(&self, token: SnakeToken) -> Option<usize> {
         self.snakes.get(&token).map(|snake| snake.body.len())
     }
 
@@ -196,7 +196,7 @@ impl Board {
         }
     }
 
-    pub fn possible_actions(&self) -> BTreeMap<SnakeToken, BTreeSet<Direction>> {
+    #[must_use] pub fn possible_actions(&self) -> BTreeMap<SnakeToken, BTreeSet<Direction>> {
         let mut actions: BTreeMap<_, BTreeSet<_>> = self
             .snakes
             .keys()
@@ -272,7 +272,7 @@ pub struct Battlesnake {
 }
 
 impl Battlesnake {
-    pub fn from_game_snake(snake: &crate::Battlesnake) -> Self {
+    #[must_use] pub fn from_game_snake(snake: &crate::Battlesnake) -> Self {
         let body: VecDeque<_> = snake.body.iter().copied().collect();
         debug_assert_eq!(body.len(), usize::try_from(snake.length).unwrap());
         debug_assert!(snake.health <= crate::MAX_HEALTH);
@@ -295,7 +295,7 @@ impl Battlesnake {
         self.health = self.health.saturating_sub(1);
     }
 
-    pub fn head(&self) -> &Coord {
+    #[must_use] pub fn head(&self) -> &Coord {
         debug_assert!(!self.body.is_empty());
         self.body.front().expect("not empty")
     }