chore(ffi): Upgrade to Rust edition 2024

bindings/matrix-sdk-crypto-ffi/Cargo.toml

@@ -2,7 +2,7 @@
 name = "matrix-sdk-crypto-ffi"
 version = "0.1.0"
 authors = ["Damir Jelić <poljar@termina.org.uk>"]
-edition = "2021"
+edition = "2024"
 rust-version.workspace = true
 description = "Uniffi based bindings for the Rust SDK crypto crate"
 repository = "https://github.com/matrix-org/matrix-rust-sdk"

bindings/matrix-sdk-ffi-macros/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 description = "Helper macros to write FFI bindings"
-edition = "2021"
+edition = "2024"
 homepage = "https://github.com/matrix-org/matrix-rust-sdk"
 keywords = ["matrix", "chat", "messaging", "ruma"]
 license = "Apache-2.0"

bindings/matrix-sdk-ffi/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "matrix-sdk-ffi"
 version = "0.16.0"
-edition = "2021"
+edition = "2024"
 homepage = "https://github.com/matrix-org/matrix-rust-sdk"
 keywords = ["matrix", "chat", "messaging", "ffi"]
 license = "Apache-2.0"

bindings/matrix-sdk-ffi/src/platform/mod.rs

@@ -514,7 +514,12 @@ impl TracingConfiguration {
     #[cfg_attr(not(feature = "sentry"), allow(unused_mut))]
     fn build(mut self) -> LoggingCtx {
         // Show full backtraces, if we run into panics.
-        std::env::set_var("RUST_BACKTRACE", "1");
+        //
+        // FIXME: Use safe API for this once stable. Tracking issue:
+        //        https://github.com/rust-lang/rust/issues/93346
+        unsafe {
+            std::env::set_var("RUST_BACKTRACE", "1");
+        }
 
         // Log panics.
         log_panics::init();