Update rust.yml (#62)

Fix README.md example

.github/workflows/rust.yml

@@ -41,7 +41,7 @@ jobs:
 
     - uses: actions/checkout@v2
     - name: ci-nighly
-      if: ${{ !(matrix.rust == '1.57.0' || matrix.rust == "1.64.0") }}
+      if: ${{ matrix.rust != '1.57.0' && matrix.rust != '1.64.0' }}
       run: |
         rustup override set ${{ matrix.rust }}
 
@@ -60,7 +60,6 @@ jobs:
         cargo test --features "__test derive constant_time_as_str"
         cargo test --features "__test derive constant_time_as_str assertc"
         cargo test --features "__test derive constant_time_as_str assertc more_str_macros rust_1_83"
-        cargo test --features "__inline_const_pat_tests derive constant_time_as_str assertc more_str_macros rust_1_83"
 
     - uses: actions/checkout@v2
     - name: ci-nighly

README.md

@@ -119,11 +119,9 @@ const fn compute_age(s: &str) -> usize { s.len() * 6 }
 This example demonstrates how you can use the [`ConstDebug`] derive macro,
 and then format the type into a `&'static str` constant.
 
-This example requires Rust nightly, and the `"derive"` feature.
+This example requires Rust 1.83.0, and the `"derive"` feature.
 
 ```rust
-#![feature(const_mut_refs)]
-
 use const_format::{ConstDebug, formatc};
 
 #[derive(ConstDebug)]