Use cargo-machete in CI

Author: Bromeon

.github/workflows/full-ci.yml

@@ -35,6 +35,7 @@ env:
   GDRUST_FEATURES: "gdnative/async,gdnative/serde,gdnative_bindings_generator/debug"
   CARGO_DENY_VERSION: "0.11.4"
   CARGO_DINGHY_VERSION: "0.4.71"
+  CARGO_MACHETE_VERSION: "0.3"
 
 on:
   push:
@@ -80,21 +81,33 @@ jobs:
       - name: "Check clippy"
         run: cargo clippy --workspace --features ${GDRUST_FEATURES} -- -D clippy::style -D clippy::complexity -D clippy::perf -D clippy::dbg_macro -D clippy::todo -D clippy::unimplemented
 
-  cargo-deny:
+  cargo-deny-machete:
     runs-on: ubuntu-latest
     needs: rustfmt
     steps:
       - uses: actions/checkout@v2
+
+      # Deny
       # Note: manually downloading is ~30s faster than https://github.com/EmbarkStudios/cargo-deny-action
       - name: "Install cargo-deny"
         run: |
           wget --no-verbose https://github.com/EmbarkStudios/cargo-deny/releases/download/$CARGO_DENY_VERSION/cargo-deny-$CARGO_DENY_VERSION-x86_64-unknown-linux-musl.tar.gz -O cargo-deny.tar.gz
           tar -zxvf cargo-deny.tar.gz
           mkdir -p $HOME/.cargo/bin
           mv cargo-deny-$CARGO_DENY_VERSION-x86_64-unknown-linux-musl/cargo-deny $HOME/.cargo/bin
-      - name: "Check cargo-deny"
+      - name: "Deny non-conforming dependencies"
         run: cargo deny check --config tools/deny.toml
 
+      # Machete
+      - name: "Install cargo-machete"
+        uses: baptiste0928/cargo-install@v1
+        with:
+          crate: cargo-machete
+          version: ${{ env.CARGO_MACHETE_VERSION }}
+      - name: "Use machete to cut down dependencies"
+        run: cargo machete
+
+
   test:
     name: test-${{ matrix.os.name }}${{ matrix.rust.postfix }}
     needs: rustfmt
@@ -285,7 +298,7 @@ jobs:
     needs:
       #- rustfmt
       - clippy
-      - cargo-deny
+      - cargo-deny-machete
       - test
       - integration-test-godot
       - build-release