missing return

src/main.cpp

@@ -8,5 +8,6 @@ int main(int argc, char **argv) try {
     auto output = cmkr::args::handle_args(argc, argv);
     return fprintf(stdout, "%s\n", output) < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 } catch (const std::exception &e) {
-    fprintf(stderr, "%s\n", e.what());
+    (void)fprintf(stderr, "%s\n", e.what());
+    return EXIT_FAILURE;
 }