feat(ci): use mold linker

Author: antoniupop

.github/workflows/coprocessor-cargo-clippy.yml

@@ -39,6 +39,9 @@ jobs:
       checks: 'write' # Required to create GitHub checks for test results
       packages: 'read' # Required to read GitHub packages/container registry
     runs-on: large_ubuntu_16
+    env:
+      CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER: clang
+      RUSTFLAGS: "-C link-arg=-fuse-ld=mold"
     steps:
     - name: Checkout code
       uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -58,7 +61,7 @@ jobs:
     - name: Install dependencies
       run: |
         sudo apt-get update
-        sudo apt-get install -y protobuf-compiler
+        sudo apt-get install -y protobuf-compiler mold clang
 
     - name: Install foundry
       uses: foundry-rs/foundry-toolchain@de808b1eea699e761c404bda44ba8f21aba30b2c

.github/workflows/coprocessor-cargo-tests.yml

@@ -41,6 +41,9 @@ jobs:
       packages: 'read' # Required to read GitHub packages/container registry
       pull-requests: 'write' # Required to post coverage comment on PR
     runs-on: large_ubuntu_16
+    env:
+      CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER: clang
+      RUSTFLAGS: "-C link-arg=-fuse-ld=mold"
     steps:
     - name: Checkout code
       uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -65,7 +68,7 @@ jobs:
     - name: Install cargo dependencies
       run: |
         sudo apt-get update
-        sudo apt-get install -y protobuf-compiler && \
+        sudo apt-get install -y protobuf-compiler mold clang && \
         cargo install sqlx-cli --version 0.7.2 --no-default-features --features postgres --locked
 
     - name: Install foundry

.github/workflows/coprocessor-gpu-tests.yml

@@ -6,7 +6,8 @@ permissions: {}
 env:
   CARGO_TERM_COLOR: always
   ACTION_RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
-  RUSTFLAGS: "-C target-cpu=native"
+  RUSTFLAGS: "-C target-cpu=native -C link-arg=-fuse-ld=mold"
+  CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER: clang
   RUST_BACKTRACE: "full"
   RUST_MIN_STACK: "8388608"
   IS_PULL_REQUEST: ${{ github.event_name == 'pull_request' }}
@@ -134,7 +135,7 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install -y protobuf-compiler cmake pkg-config libssl-dev \
-                                  libclang-dev docker-compose-v2 docker.io acl
+                                  libclang-dev docker-compose-v2 docker.io acl mold clang
           sudo usermod -aG docker "$USER"
           newgrp docker
           sudo setfacl --modify user:"$USER":rw /var/run/docker.sock