Merge #3215

3215: Use nightly in cargo fmt r=curquiza a=curquiza

Discussed with `@Kerollmops,` needs this change

Co-authored-by: Clémentine Urquizar - curqui <clementine@meilisearch.com>

.github/workflows/rust.yml

@@ -83,7 +83,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: nightly
           override: true
           components: rustfmt
       - name: Cache dependencies