fix: Use edition 2024 by default

Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-edition = "2021"
+edition = "2024"
 name = "rp235x-project-template"
 version = "0.1.0"
 license = "MIT OR Apache-2.0"

README.md

@@ -34,7 +34,9 @@ If you aren't using a debugger (or want to use other debugging configurations),
 <details open="open">
   <summary><h2 style="display: inline-block" id="requirements">Requirements</h2></summary>
 
-- The standard Rust tooling (cargo, rustup) which you can install from https://rustup.rs/
+- The standard Rust tooling (cargo, rustup) which you can install from <https://rustup.rs/>
+
+  Note that, this template targets Rust 2024 edition, which requires Rust 1.85. So, it is recommended to use the latest stable version.
 
 - Toolchain support for the cortex-m33 processors in the rp235x (thumbv8m.main-none-eabihf)
 

src/main.rs

@@ -10,7 +10,7 @@ use embedded_hal::digital::OutputPin;
 use panic_probe as _;
 use rp235x_hal::clocks::init_clocks_and_plls;
 use rp235x_hal::{self as hal, entry};
-use rp235x_hal::{pac, Clock};
+use rp235x_hal::{Clock, pac};
 
 // Provide an alias for our BSP so we can switch targets quickly.
 // Uncomment the BSP you included in Cargo.toml, the rest of the code does not need to change.
@@ -74,7 +74,7 @@ fn main() -> ! {
 }
 
 /// Program metadata for `picotool info`
-#[link_section = ".bi_entries"]
+#[unsafe(link_section = ".bi_entries")]
 #[used]
 pub static PICOTOOL_ENTRIES: [rp235x_hal::binary_info::EntryAddr; 5] = [
     rp235x_hal::binary_info::rp_cargo_bin_name!(),