ci(rust): fixes and optimizations

- removes cargo check since the clippy step builds already
- image switched to rust:alpine
- less correctness during build for speedier compilation

.gitea/workflows/rust.yml

@@ -3,11 +3,10 @@ name: Rust
 on:
     pull_request:
 
-# jobs can be separated if we integrate tests
 jobs:
-    build, clippy & fmt:
+    clippy & fmt:
         runs-on: alpine
-        container: node:26-alpine
+        container: rust:alpine
         env:
             CARGO_HOME: ${{ github.workspace }}/.cargo
 
@@ -17,48 +16,26 @@ jobs:
 
             - name: Cache cargo packages
               uses: actions/cache@v4
-              env:
-                  cache-name: cache-cargo-packages
               with:
                   path: |
                       .cargo/registry
                       .cargo/git
                       target
-                  key: rust-build-${{ runner.os }}-${{ env.cache-name }}-${{ hashFiles('**/Cargo.lock') }}
+                  key: rust-build-${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
                   restore-keys: |
-                      rust-${{ runner.os }}-build-${{ env.cache-name }}-
-                      rust-${{ runner.os }}-build-
-                      rust-
+                      rust-${{ runner.os }}-cargo-
 
             - name: Install tools
               run: |
-                  apk add --no-cache \
-                    git \
-                    cargo \
-                    rust \
-                    rust-clippy \
-                    rustfmt
+                  apk add --no-cache git
+                  rustup component add clippy rustfmt
 
-            - name: Cargo check
-              run: |
-                  if [ -n "$(find . -name "Cargo.toml" -print -quit)" ]; then
-                    for manifest in $(find . -name "Cargo.toml"); do
-                      cargo check --manifest-path "$manifest" && \
-                        echo "$manifest: check passed" || \
-                        { echo "$manifest: check failed"; exit 1; }
-                    done
-                  elif [ -n "$(find . -name "*.rs" -print -quit)" ]; then
-                    echo "Rust files found but no Cargo.toml"
-                    exit 1
-                  else
-                    echo "No Rust project found"
-                  fi
-            - name: Clippy
+            - name: Clippy (with compile check)
               run: |
                   if [ -n "$(find . -name "Cargo.toml" -print -quit)" ]; then
                     status=0
                     for manifest in $(find . -name "Cargo.toml"); do
-                      cargo clippy --manifest-path "$manifest" --all-targets --all-features -- -D warnings && \
+                      cargo clippy --manifest-path "$manifest" -- -D warnings && \
                         echo "$manifest: Clippy passed" || \
                         { echo "$manifest: Clippy failed"; status=1; }
                     done
@@ -69,6 +46,7 @@ jobs:
                   else
                     echo "No Rust project found"
                   fi
+
             - name: Format check
               run: |
                   if [ -n "$(find . -name "Cargo.toml" -print -quit)" ]; then