move bench to a seprate, parallel step

ci/buildkite.yml

@@ -3,7 +3,12 @@ steps:
     name: "stable [public]"
     env:
       CARGO_TARGET_CACHE_NAME: "stable"
-    timeout_in_minutes: 60
+    timeout_in_minutes: 30
+  - command: "ci/docker-run.sh solanalabs/rust ci/test-bench.sh"
+    name: "bench [public]"
+    env:
+      CARGO_TARGET_CACHE_NAME: "bench"
+    timeout_in_minutes: 30
   - command: "ci/shellcheck.sh"
     name: "shellcheck [public]"
     timeout_in_minutes: 20

ci/test-bench.sh

@@ -0,0 +1,13 @@
+#!/bin/bash -e
+
+cd "$(dirname "$0")/.."
+
+ci/version-check.sh stable
+export RUST_BACKTRACE=1
+
+_() {
+  echo "--- $*"
+  "$@"
+}
+
+_ cargo bench --verbose

ci/test-stable.sh

@@ -13,7 +13,6 @@ _() {
 _ cargo fmt -- --check
 _ cargo build --verbose
 _ cargo test --verbose
-_ cargo bench --verbose
 
 echo --- ci/localnet-sanity.sh
 (