message: RUSTC_VERSION != CARGO_VERSION
diff: @@ -357,7 +357,7 @@ let out_dir = env::var("OUT_DIR").unwrap();
  * `CARGO_PKG_<var>` - The package information variables, with the same names and values as are [provided during crate building][variables set for crates].
  * `RUSTC_VERSION` - The version of rustc used by the cargo that invokes
  the build script. Its constituent parts are also
  - available as `CARGO_VERSION_MAJOR`, `_MINOR`, and
  + available as `RUSTC_VERSION_MAJOR`, `_MINOR`, and
  `_PATCH`.
  [unix-like platforms]: ../../reference/conditional-compilation.html#unix-and-windows
  