Don't bench on windows

.gitlab/ci.sh

@@ -88,6 +88,11 @@ run tar xf dist-newstyle/sdist/filepath-*.tar.gz
 run cd filepath-*
 run cabal v2-build ${args[@]}
 run cabal v2-test ${args[@]} --test-show-details=direct all
-run cabal v2-bench ${args[@]} all
+case "$(uname -s)" in
+    MSYS_*|MINGW*) ;;
+	*)
+		run cabal v2-bench ${args[@]} all
+		;;
+esac
 run cabal v2-haddock