Run rustfmt check on CI

Author: JohnTitor

.github/workflows/ci.yml

@@ -22,11 +22,17 @@ jobs:
           rustup set profile minimal
           rustup override set ${{ matrix.version }}
 
+      - name: Rustfmt check
+        if: matrix.version == '1.46.0'
+        run: |
+          rustup component add rustfmt
+          cargo fmt --all -- --check
+
       - name: Run `cargo test` on workspace
         run: cargo test --workspace
 
       - name: phf_macros UI test
-        if: matrix.version == '1.40.0'
+        if: matrix.version == '1.46.0'
         working-directory: phf_macros
         run: cargo test --features=unicase -- --ignored --test-threads=1
 

phf_macros/tests/compiletest.rs

@@ -1,5 +1,5 @@
 #[test]
-#[ignore] // compiler error message format is different between 1.32.0 and nightly
+#[ignore] // diagnostics may be different between stable and nightly.
 fn compile_test_unicase() {
     let t = trybuild::TestCases::new();
     t.compile_fail("tests/compile-fail-unicase/*.rs");