tidy: move to edition 2024

src/tools/tidy/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "tidy"
 version = "0.1.0"
-edition = "2021"
+edition = "2024"
 autobins = false
 
 [dependencies]

src/tools/tidy/src/main.rs

@@ -15,11 +15,12 @@ use std::{env, process};
 use tidy::*;
 
 fn main() {
- // Running Cargo will read the libstd Cargo.toml
+ // Enable nightly, because Cargo will read the libstd Cargo.toml
  // which uses the unstable `public-dependency` feature.
- //
- // `setenv` might not be thread safe, so run it before using multiple threads.
- env::set_var("RUSTC_BOOTSTRAP", "1");
+ // SAFETY: no other threads have been spawned
+ unsafe {
+ env::set_var("RUSTC_BOOTSTRAP", "1");
+ }
 
  let root_path: PathBuf = env::args_os().nth(1).expect("need path to root of repo").into();
  let cargo: PathBuf = env::args_os().nth(2).expect("need path to cargo").into();