Specify rust-lang/rust#128778

Author: Veykril

src/changelog.rst

@@ -34,6 +34,9 @@ Language changes in Rust 1.83.0
   * Changed syntax: :s:`Lifetime`
 
 * `Define behavior when atomic and non-atomic reads race. <https://github.com/rust-lang/rust/pull/128778>`_
+
+  * No change: Already covered by the definition of :t:`data race`.
+
 * `Non-exhaustive structs may now be empty. <https://github.com/rust-lang/rust/pull/128934>`_
 * `Disallow implicit coercions from places of type \`!\` <https://github.com/rust-lang/rust/pull/129392>`_
 * `\`const extern\` functions can now be defined for other calling conventions. <https://github.com/rust-lang/rust/pull/129753>`_