CI: detect unused dependencies

.github/workflows/lint.yml

@@ -14,24 +14,24 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Cache cargo dependencies
-      id: cache-cargo
-      uses: actions/cache@v4
-      env:
-        cache-name: cache-cargo-dependencies
-      with:
-        path: |
-          ~/.cargo/bin/
-          ~/.cargo/registry/index/
-          ~/.cargo/registry/cache/
-          ~/.cargo/git/db/
-          target/
-        key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/Cargo.lock', '**/Cargo.toml') }}
-
+    - uses: Swatinem/rust-cache@v2
     - name: Versions
       run: |
         cargo version
         cargo clippy --version
 
     - name: Run clippy
       run: cargo clippy -- -D warnings
+
+  check-for-unused-deps:
+    runs-on: ubuntu-24.04
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Install cargo-binstall
+      uses: cargo-bins/cargo-binstall@main
+
+    - name: Install cargo-shear
+      run: cargo binstall --no-confirm cargo-shear
+
+    - run: cargo shear

.github/workflows/test.yml

@@ -14,19 +14,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Cache cargo dependencies
-      id: cache-cargo
-      uses: actions/cache@v4
-      env:
-        cache-name: cache-cargo-dependencies
-      with:
-        path: |
-          ~/.cargo/bin/
-          ~/.cargo/registry/index/
-          ~/.cargo/registry/cache/
-          ~/.cargo/git/db/
-          target/
-        key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/Cargo.lock', '**/Cargo.toml') }}
+    - uses: Swatinem/rust-cache@v2
 
     - name: Version
       run: cargo version

examples/voting/client/Cargo.toml

@@ -13,5 +13,4 @@ tokio = { version = "1.45.1", features = ["full"] }
 anyhow = "1.0.98"
 clap = { version = "4.5.38", features = ["derive"] }
 hex = "0.4.3"
-humantime = "2.2.0"
 futures = "0.3.31"

types/Cargo.toml

@@ -22,6 +22,11 @@ arbitrary = [
   "dep:arbitrary",
 ]
 
+[package.metadata.cargo-shear]
+ignored = [
+  "pod-types", # self-depend for tests to enable the arbitrary feature
+]
+
 [dependencies]
 alloy-consensus = { version = "0.12.1", features = [
   "serde",