ci: pull rust toolchain setup out of container image

.github/Dockerfile

@@ -8,17 +8,12 @@ ARG PHOSH_REF=v0.51.0
 ARG PHOC_REMOTE=https://gitlab.gnome.org/World/Phosh/phoc.git
 ARG PHOC_REF=v0.51.0
 
-ENV RUSTUP_HOME=/usr/local/rustup \
-    CARGO_HOME=/usr/local/cargo \
-    PATH=/usr/local/cargo/bin:$PATH
-
 RUN export DEBIAN_FRONTEND=noninteractive \
    && apt-get -y update \
    && apt-get -y install --no-install-recommends \
     curl \
     dh-cargo \
     foot \
-    rust-clippy \
     wf-recorder \
    && eatmydata git clone ${PHOC_REMOTE} \
    && cd phoc \
@@ -32,10 +27,6 @@ RUN export DEBIAN_FRONTEND=noninteractive \
    && cd phosh \
    && git checkout ${PHOSH_REF} \
    && eatmydata apt-get --no-install-recommends -y build-dep . \
-   && curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs \
-      | sh -s -- -y --no-modify-path --profile minimal --default-toolchain 1.85.0 \
-   && rustup component add clippy rustfmt --toolchain 1.85.0 \
-   && chmod -R a+rX /usr/local/rustup /usr/local/cargo \
    && eatmydata meson setup --prefix=/usr -Dbindings-lib=true _build . \
    && eatmydata meson compile -C _build \
    && eatmydata meson install -C _build \

.github/workflows/build.yml

@@ -56,6 +56,8 @@ jobs:
       - uses: actions/checkout@v4
         with:
           ref: ${{  github.event.pull_request.head.sha }}
+      - name: Set up Rust toolchain
+        uses: actions-rust-lang/setup-rust-toolchain@v1
       - name: Build
         run: |
           set -uexo pipefail

tests/common/dbus.rs

@@ -65,7 +65,7 @@ struct UserFixture {
 
 #[zbus::interface(name = "org.freedesktop.Accounts")]
 impl AccountsFixture {
-    async fn list_cached_users(&self) -> Vec<ObjectPath> {
+    async fn list_cached_users(&self) -> Vec<ObjectPath<'_>> {
         let mut users = vec![
             ObjectPath::from_static_str_unchecked("/org/freedesktop/Accounts/phoshi"),
             ObjectPath::from_static_str_unchecked("/org/freedesktop/Accounts/agx"),