tools/memcached_benchmark: use mold as link-arg again

Signed-off-by: Ruowen Qin <ruowenq2@illinois.edu>

Author: chinrw

.github/workflows/memcached_benchmark.yml

@@ -39,14 +39,14 @@ jobs:
       - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
           components: rustfmt
-          toolchain: 1.85.0
+          toolchain: stable
       - name: Rustfmt Check
         uses: actions-rust-lang/rustfmt@v1
         with:
           manifest-path: ./tools/memcached_benchmark/Cargo.toml
       - name: Build
-        run: RUSTFLAGS='-Ctarget-cpu=native -Clinker-plugin-lto -Clink-arg=-flto=thin -Clink-arg=-fuse-ld=lld -Clink-arg=-Wl,-O1 -Clink-arg=-Wl,--as-needed' cargo build -vvv
+        run: RUSTFLAGS='-Ctarget-cpu=native -Clinker-plugin-lto -Clink-arg=-flto=thin -Clink-arg=-fuse-ld=mold -Clink-arg=-Wl,-O1 -Clink-arg=-Wl,--as-needed' cargo build -vvv
       - name: Run tests with debug build
-        run: RUSTFLAGS='-Ctarget-cpu=native -Clinker-plugin-lto -Clink-arg=-flto=thin -Clink-arg=-fuse-ld=lld -Clink-arg=-Wl,-O1 -Clink-arg=-Wl,--as-needed' cargo test --verbose
+        run: RUSTFLAGS='-Ctarget-cpu=native -Clinker-plugin-lto -Clink-arg=-flto=thin -Clink-arg=-fuse-ld=mold -Clink-arg=-Wl,-O1 -Clink-arg=-Wl,--as-needed' cargo test --verbose
       - name: Run tests with release build
-        run: RUSTFLAGS='-Ctarget-cpu=native -Clinker-plugin-lto -Clink-arg=-flto=thin -Clink-arg=-fuse-ld=lld -Clink-arg=-Wl,-O1 -Clink-arg=-Wl,--as-needed' cargo test -r --verbose
+        run: RUSTFLAGS='-Ctarget-cpu=native -Clinker-plugin-lto -Clink-arg=-flto=thin -Clink-arg=-fuse-ld=mold -Clink-arg=-Wl,-O1 -Clink-arg=-Wl,--as-needed' cargo test -r --verbose

tools/memcached_benchmark/.cargo/config.toml

@@ -7,5 +7,5 @@ rustflags = [
 	"-Zthreads=8",
 	"-Ctarget-cpu=native",
 	"-Clinker-plugin-lto",
-	"-Clink-args=-flto=thin -fuse-ld=lld -Wl,-O1 -Wl,--as-needed -Wl,--gc-sections",
+	"-Clink-args=-flto=thin -fuse-ld=mold -Wl,-O1 -Wl,--as-needed -Wl,--gc-sections",
 ]