Suppress spurious Clippy warning

src/lib.rs

@@ -1352,6 +1352,7 @@ macro_rules! transmute {
             // were to use `core::mem::transmute`, this macro would not work in
             // `std` contexts in which `core` was not manually imported. This is
             // not a problem for 2018 edition crates.
+            #[allow(clippy::undocumented_unsafe_blocks)]
             unsafe { $crate::__real_transmute(e) }
         }
     }}