Suppress some lints in cxx-build
diff --git a/gen/build/src/lib.rs b/gen/build/src/lib.rs
index 5bee67f..cabe2b1 100644
--- a/gen/build/src/lib.rs
+++ b/gen/build/src/lib.rs
@@ -45,6 +45,13 @@
 //! $ cxxbridge src/main.rs > path/to/mybridge.cc
 //! ```
 
+#![allow(
+    clippy::inherent_to_string,
+    clippy::needless_doctest_main,
+    clippy::new_without_default,
+    clippy::toplevel_ref_arg
+)]
+
 mod error;
 mod gen;
 mod paths;