Nomad changes

scripts/ci/actions/setup-rust/build-with-sccache-fallback.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Usage: build-with-sccache-fallback.sh <cargo command...>
+log_file=$(mktemp)
+trap 'rm -f "$log_file"' EXIT
+
+echo "Building with sccache (fallback on errors)..."
+
+# Attempt with sccache
+if "$@" 2>&1 | tee "$log_file"; then
+  echo "✓ Build succeeded with sccache"
+  exit 0
+fi
+
+# Check for sccache-related errors
+if grep -Eq "sccache.*(error|failed)|cache storage failed|dns error|connection (refused|timed out)" "$log_file"; then
+  echo "⚠️  sccache failure detected, retrying without cache..."
+  export RUSTC_WRAPPER=""
+  export SCCACHE_GHA_ENABLED=false
+
+  if "$@"; then
+    echo "✓ Build succeeded without sccache (fallback)"
+    exit 0
+  fi
+fi
+
+echo "✗ Build failed"
+exit 1