Fix Clippy lints

board-shared/src/expr.rs

@@ -104,7 +104,7 @@ fn shunting_yard(tokens: &[Token]) -> Result<Vec<DecimalToken>, ()> {
                     }
                 }
             }
-            _ => panic!("Unexpected token: {:?}", token),
+            _ => panic!("Unexpected token: {token:?}"),
         }
     }
 
@@ -132,7 +132,7 @@ fn evaluate_rpn(tokens: &[DecimalToken]) -> Result<f64, ()> {
                 };
                 stack.push(result);
             }
-            _ => panic!("Unexpected token: {:?}", token),
+            _ => panic!("Unexpected token: {token:?}"),
         }
     }
 

board-shared/src/parser.rs

@@ -13,10 +13,10 @@ pub enum Expression {
 impl fmt::Display for Expression {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
-            Expression::Digit(value) => write!(f, "{}", value),
-            Expression::Parentheses(expr) => write!(f, "({})", expr),
+            Expression::Digit(value) => write!(f, "{value}"),
+            Expression::Parentheses(expr) => write!(f, "({expr})"),
             Expression::Binary(operator, left, right) => {
-                write!(f, "{} {} {}", left, operator, right)
+                write!(f, "{left} {operator} {right}")
             }
         }
     }