Dockerfile: bump Rust toolchain to 1.78

This reduces the fw binary size by 4176 bytes as compared to the
v9.18.0 release.

Also bump LLVM 18 - it is unrelated but I did it anyway as the Rust
release notes also mentioned that they moved to LLVM 18.

The workflow.rs change is due to this deprecation warning:

```
warning: creating a shared reference to mutable static is discouraged
   --> bitbox02-rust-c/src/workflow.rs:103:11
    |
103 |     match &CONFIRM_STATE {
    |           ^^^^^^^^^^^^^^ shared reference to mutable static
    |
    = note: for more information, see issue #114447 <rust-lang/rust#114447>
    = note: this will be a hard error in the 2024 edition
    = note: this shared reference has lifetime `'static`, but if the static ever gets mutated, or a mutable reference is created, then any further use of this shared reference is Undefined Behavior
    = note: `#[warn(static_mut_refs)]` on by default
help: use `addr_of!` instead to create a raw pointer
    |
103 |     match addr_of!(CONFIRM_STATE) {
```

.ci/run-container-ci

@@ -25,7 +25,7 @@
 set -e
 set -x
 
-CONTAINER=shiftcrypto/firmware_v2:37
+CONTAINER=shiftcrypto/firmware_v2:38
 
 if [ "$1" == "pull" ] ; then
 	docker pull "$CONTAINER"

Dockerfile

@@ -20,8 +20,8 @@ ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update && apt-get upgrade -y && apt-get install -y wget nano rsync curl gnupg2 jq unzip bzip2
 
 # for clang-*-15, see https://apt.llvm.org/
-RUN echo "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-15 main" >> /etc/apt/sources.list && \
-    echo "deb-src http://apt.llvm.org/jammy/ llvm-toolchain-jammy-15 main" >> /etc/apt/sources.list && \
+RUN echo "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main" >> /etc/apt/sources.list && \
+    echo "deb-src http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main" >> /etc/apt/sources.list && \
     wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
 
 # Install gcc8-arm-none-eabi
@@ -37,7 +37,7 @@ RUN mkdir ~/Downloads &&\
 # Tools for building
 RUN apt-get update && apt-get install -y \
     build-essential \
-    llvm-15 \
+    llvm-18 \
     gcc-10 \
     binutils \
     valgrind \
@@ -68,8 +68,8 @@ RUN update-alternatives --install /usr/bin/gcov gcov /usr/bin/gcov-10 100
 RUN apt-get update && apt-get install -y \
     python3 \
     python3-pip \
-    clang-format-15 \
-    clang-tidy-15
+    clang-format-18 \
+    clang-tidy-18
 
 RUN python3 -m pip install --upgrade pip
 

src/rust/bitbox02-rust-c/src/workflow.rs

@@ -100,8 +100,8 @@ pub unsafe extern "C" fn rust_workflow_unlock_poll(result_out: &mut bool) -> boo
 /// Returns true if there was a result.
 #[no_mangle]
 pub unsafe extern "C" fn rust_workflow_confirm_poll(result_out: &mut bool) -> bool {
-    match &CONFIRM_STATE {
-        TaskState::ResultAvailable(result) => {
+    match CONFIRM_STATE {
+        TaskState::ResultAvailable(ref result) => {
             CONFIRM_TITLE = None;
             CONFIRM_BODY = None;
             CONFIRM_PARAMS = None;

src/rust/bitbox02-rust/src/hww/api/ethereum/sign_typed_msg.rs

@@ -423,7 +423,10 @@ async fn hash_struct(
     child_formatted_path.push("".into());
     for (index, member) in typ.members.iter().enumerate() {
         *child_path.last_mut().unwrap() = index as u32;
-        *child_formatted_path.last_mut().unwrap() = member.name.clone();
+        child_formatted_path
+            .last_mut()
+            .unwrap()
+            .clone_from(&member.name);
         let member_type = member.r#type.as_ref().ok_or(Error::InvalidInput)?;
         encode_member(
             &mut hasher,

src/rust/rust-toolchain

@@ -1 +1 @@
-1.76.0
+1.78.0