fix panic, update readme

api/sys/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "playdate-sys"
-version = "0.4.2"
+version = "0.4.3"
 build = "src/build.rs"
 readme = "README.md"
 description = "Low-level Playdate API bindings"

api/sys/README.md

@@ -23,6 +23,8 @@ _I've experimented enough with wrapping the entire API with results at every ste
 
 ## Prerequisites
 
+<abbr title="Minimal Nightly Rust Version">MNRV</abbr> is [`1.81.0` from 2024-06-29][rust-toolchain.toml]
+
 1. Rust __nightly__ toolchain (rustup is optional)
 1. [Playdate SDK][sdk]
    - Ensure that env var `PLAYDATE_SDK_PATH` points to the SDK root
@@ -31,6 +33,7 @@ _I've experimented enough with wrapping the entire API with results at every ste
 
 [sdk]: https://play.date/dev/#cardSDK
 [doc-prerequisites]: https://sdk.play.date/Inside%20Playdate%20with%20C.html#_prerequisites
+[rust-toolchain.toml]: https://github.com/boozook/playdate/blob/main/rust-toolchain.toml#L2
 
 
 ## Usage

api/sys/src/sys/panic.rs

@@ -11,23 +11,6 @@ use super::proc::error;
 #[panic_handler]
 fn panic(panic_info: &PanicInfo) -> ! {
 	let mut output = ArrayString::<1024>::new();
-	let payload = if let Some(payload) = panic_info.payload().downcast_ref::<&str>() {
-		payload
-	} else {
-		""
-	};
-
-	let location = panic_info.location();
-	let (module, line) = if let Some(location) = location {
-		(location.file(), location.line())
-	} else {
-		("", 0)
-	};
-
-	let _ = if let Some(message) = panic_info.message() {
-		write!(output, "PANIC: [{module}@{line}] \"{message}\" {payload}\0")
-	} else {
-		write!(output, "PANIC: [{module}@{line}] {payload}\0")
-	};
+	let _ = write!(output, "{panic_info}\0");
 	error(output.as_str());
 }