Apply missing_debug_implementations lint at workspace level

Cargo.toml

@@ -57,6 +57,7 @@ resolver = "2"
 [workspace.lints.rust]
 improper_ctypes = "warn"
 improper_ctypes_definitions = "warn"
+missing_debug_implementations = "warn"
 non_ascii_idents = "warn"
 rust_2018_idioms = "warn"
 single_use_lifetimes = "warn"

src/lib.rs

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 
 #![forbid(unsafe_code)]
+#![allow(missing_debug_implementations)]
 // All items are not public APIs.
 #![doc(hidden)]