Formatting

src/ast/vm.rs

@@ -392,7 +392,10 @@ impl VM {
                         }
                         Value::Function(f) => return Ok((f.func)(arg_vals)),
                         _ => {
-                            return Err(format!("Tail call target is not a function: {}", func_val));
+                            return Err(format!(
+                                "Tail call target is not a function: {}",
+                                func_val
+                            ));
                         }
                     }
                 }