test: add check relax ordering on ci

devtools/ci/check-relaxed.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+case "$OSTYPE" in
+  darwin*)
+    if ! type gsed &>/dev/null || ! type ggrep &>/dev/null; then
+      echo "GNU sed and grep not found! You can install via Homebrew" >&2
+      echo >&2
+      echo "    brew install grep gnu-sed" >&2
+      exit 1
+    fi
+
+    SED=gsed
+    GREP=ggrep
+    ;;
+  *)
+    SED=sed
+    GREP=grep
+    ;;
+esac
+
+find ./ -not -path '*/target/*' -type f -name "*.rs" | xargs grep -H "Relaxed"
+
+if [ $? -eq 0 ]; then
+    echo "find use Relaxed on code, please check"
+    exit 1
+fi

devtools/ci/ci_main.sh

@@ -60,6 +60,7 @@ case $GITHUB_WORKFLOW in
     make check-dirty-rpc-doc
     make check-dirty-hashes-toml
     devtools/ci/check-cyclic-dependencies.py
+    devtools/ci/check-relaxed.sh
     ;;
   ci_aarch64_build*)
     echo "ci_aarch64_build"