Ignore unnecessary_cast clippy false positive

    warning: casting raw pointers to the same type and constness is unnecessary (`*const dyn of::NonStaticAny` -> `*const dyn of::NonStaticAny`)
       --> src/lib.rs:219:11
        |
    219 |         &*(&phantom_data as *const dyn NonStaticAny as *const (dyn NonStaticAny + 'static))
        |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&phantom_data as *const dyn NonStaticAny`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
        = note: `#[warn(clippy::unnecessary_cast)]` on by default

src/lib.rs

@@ -107,7 +107,11 @@
 
 #![no_std]
 #![doc(html_root_url = "https://docs.rs/typeid/1.0.1")]
-#![allow(clippy::doc_markdown, clippy::inline_always)]
+#![allow(
+    clippy::doc_markdown,
+    clippy::inline_always,
+    clippy::unnecessary_cast, // https://github.com/rust-lang/rust-clippy/issues/12860
+)]
 
 extern crate self as typeid;