Added support for unknown errors

src/main.cpp

@@ -187,5 +187,8 @@ int main(int argc, char** argv) {
     } catch (molasses::build_system_error& error) {
         std::cerr << "BUILD SYSTEM ERROR:\n\t" << error.what();
         return 1;
+    } catch (...) {
+        std::cerr << "ERREUR INCONNUE\n";
+        return 1;
     }
 }