ci(lesavka): speed up Rust test linking

Jenkinsfile

@@ -17,7 +17,7 @@ spec:
     node-role.kubernetes.io/worker: "true"
   containers:
     - name: rust-ci
-      image: registry.bstein.dev/bstein/lesavka-ci@sha256:db682677e608ca029c0291ea1475ddefd40c5d17897306403278b4266908d0e6
+      image: registry.bstein.dev/bstein/lesavka-ci@sha256:699ff0a2b4461f8627fcc19353eae0dee49500486eb1819287b5713ad239c13f
       command: ["cat"]
       tty: true
       env:
@@ -61,9 +61,12 @@ spec:
     CARGO_TERM_COLOR = 'always'
     CARGO_BUILD_JOBS = '2'
     CARGO_INCREMENTAL = '0'
+    CARGO_PROFILE_DEV_DEBUG = '0'
+    CARGO_PROFILE_TEST_DEBUG = '0'
     CARGO_HOME = '/home/jenkins/agent/.cargo-home'
     CARGO_TARGET_DIR = "${WORKSPACE}/target"
     PATH = "/home/jenkins/agent/.cargo-home/bin:/usr/local/cargo/bin:${PATH}"
+    RUSTFLAGS = '-C link-arg=-fuse-ld=lld'
     DOCKER_BUILDKIT = '1'
     LESAVKA_CI_PROFILE = "${params.LESAVKA_CI_PROFILE}"
     LESAVKA_COVERAGE_ENFORCE = "${params.ENFORCE_COVERAGE_GATE}"

docker/ci.Dockerfile

@@ -11,6 +11,7 @@ RUN apt-get update \
     file \
     git \
     clang \
+    lld \
     llvm \
     pkg-config \
     libssl-dev \