diff --git a/rust2rpm/__main__.py b/rust2rpm/__main__.py
index 5d809ab..c945455 100644
--- a/rust2rpm/__main__.py
+++ b/rust2rpm/__main__.py
@@ -347,7 +347,7 @@ def main():
         parser.error("required crate/path argument missing")
 
     crate, diff, metadata, doc_files, license_files = make_diff_metadata(
-      args.crate, args.version, patch=args.patch, store=args.store_crate)
+        args.crate, args.version, patch=args.patch, store=args.store_crate)
 
     JINJA_ENV.globals["normalize_deps"] = normalize_deps
     JINJA_ENV.globals["to_list"] = to_list
@@ -468,4 +468,10 @@ def main():
                 fobj.writelines(diff)
 
 if __name__ == "__main__":
-    main()
+    try:
+        main()
+    except requests.exceptions.HTTPError as e:
+        sys.exit(f'Failed to download metadata: {e}')
+    except subprocess.CalledProcessError as e:
+        cmd = shlex.join(e.cmd)
+        sys.exit(f'Subcommand failed with code {e.returncode}: {cmd}')