misc: apply clippy lints

assembler/src/model.rs

@@ -12,7 +12,6 @@ pub struct Node {
 }
 
 #[macro_export]
-#[macro_use]
 macro_rules! node {
     ($symbol: expr, $opcode: expr, args: $tokens: expr) => {
         Node::new($symbol.clone(), $opcode.clone(), $tokens.clone())
@@ -55,7 +54,7 @@ impl Node {
 impl fmt::Display for Node {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         let symbol = match &self.label() {
-            Some(symbol) => format!("{}:\n", symbol),
+            Some(symbol) => format!("{symbol}:\n"),
             None => "".to_string(),
         };
 
@@ -146,12 +145,19 @@ impl fmt::Display for Opcode {
     }
 }
 
-#[derive(Debug, Clone, Eq, Hash)]
+#[derive(Debug, Clone, Eq)]
 pub struct Symbol {
     pub name: String,
     pub module: Module,
 }
 
+impl std::hash::Hash for Symbol {
+    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+        self.name.hash(state);
+        self.module.hash(state);
+    }
+}
+
 impl PartialEq for Symbol {
     fn eq(&self, other: &Self) -> bool {
         self.name == other.name && self.module == other.module