Bump to rust 1.91, use payload_as_str

Author: ictrobot

Cargo.toml

@@ -10,7 +10,7 @@ edition = "2024"
 license = "MIT"
 publish = false
 repository = "https://github.com/ictrobot/aoc-rs"
-rust-version = "1.90.0"
+rust-version = "1.91.0"
 
 [workspace.lints.clippy]
 pedantic = { level = "warn", priority = -1 }

crates/aoc_wasm/src/lib.rs

@@ -30,12 +30,7 @@ extern "C" fn run_puzzle(
 ) -> bool {
     ONCE_PANIC_HANDLER.call_once(|| {
         std::panic::set_hook(Box::new(|info| {
-            let payload = info.payload();
-            let error: &str = if let Some(s) = payload.downcast_ref::<&str>() {
-                s
-            } else if let Some(s) = payload.downcast_ref::<String>() {
-                s
-            } else {
+            let Some(error) = info.payload_as_str() else {
                 return;
             };