diff --git a/libcxx/test/tools/clang_tidy_checks/robust_against_adl.cpp b/libcxx/test/tools/clang_tidy_checks/robust_against_adl.cpp
--- a/libcxx/test/tools/clang_tidy_checks/robust_against_adl.cpp
+++ b/libcxx/test/tools/clang_tidy_checks/robust_against_adl.cpp
@@ -19,8 +19,11 @@
 AST_MATCHER(clang::CallExpr, isOperator) { return llvm::isa<clang::CXXOperatorCallExpr>(Node); }
 
 AST_MATCHER(clang::UnresolvedLookupExpr, isCustomizationPoint) {
+  // In C++03 there is no noexcept operator. This is used in libc++, to avoid
+  // warnings pretend noexcept is a customization point.
   return std::ranges::any_of(
-      std::array{"swap", "make_error_code", "make_error_condition", "begin", "end", "size", "rend", "rbegin"},
+      std::array{
+          "swap", "make_error_code", "make_error_condition", "begin", "end", "size", "rend", "rbegin", "noexcept"},
       [&](const char* func) { return Node.getName().getAsString() == func; });
 }
 
diff --git a/libcxx/utils/ci/run-buildbot b/libcxx/utils/ci/run-buildbot
--- a/libcxx/utils/ci/run-buildbot
+++ b/libcxx/utils/ci/run-buildbot
@@ -226,9 +226,8 @@
 #
 generic-cxx03)
     clean
-    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx03.cmake"
-    #generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx03.cmake" \
-    #               -DLIBCXX_ENABLE_CLANG_TIDY=ON
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx03.cmake" \
+                   -DLIBCXX_ENABLE_CLANG_TIDY=ON
     check-runtimes
     check-abi-list
 ;;