diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 276a0ec8..c5ee2e8c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -100,6 +100,7 @@ test_guidelines:
   script:
     - docker run -e CCACHE_DIR=/ccache -v /mnt/ccache:/ccache netgen_${CI_BUILD_REF_NAME}:${UBUNTU_VERSION} bash /root/src/netgen/tests/build_guidelines.sh
   when: always
+  allow_failure: true
 
 # check if it compiles without spdlog
 test_noSpdlog:
diff --git a/libsrc/core/archive.hpp b/libsrc/core/archive.hpp
index 8c45baf2..0ff17768 100644
--- a/libsrc/core/archive.hpp
+++ b/libsrc/core/archive.hpp
@@ -154,7 +154,7 @@ namespace ngcore
     { return version_map[library]; }
 
     // only used for PyArchive
-    virtual void NeedsVersion(const std::string& library, const std::string& version) {}
+    virtual void NeedsVersion(const std::string& /*unused*/, const std::string& /*unused*/) {}
 
     // Pure virtual functions that have to be implemented by In-/OutArchive
     virtual Archive & operator & (double & d) = 0;