Fix inconsistencies in rustfmt editions on CI and local

We should be using at least edition 2021 everywhere.

Signed-off-by: clux <[email protected]>

.github/workflows/lint.yml

@@ -33,4 +33,4 @@ jobs:
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rustfmt
-      - run: rustfmt +nightly --edition 2018 --check $(find . -type f -iname *.rs)
+      - run: rustfmt +nightly --edition 2021 --check $(find . -type f -iname *.rs)

.github/workflows/rustfmt.yml

@@ -17,15 +17,15 @@ jobs:
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rustfmt
-      - run: rustfmt +nightly --edition 2018 $(find . -type f -iname *.rs)
+      - run: rustfmt +nightly --edition 2021 $(find . -type f -iname *.rs)
       - name: Create Pull Request
         uses: peter-evans/create-pull-request@v7
         with:
           commit-message: rustfmt
           signoff: true
           title: rustfmt
           body: |
-            Changes from `rustfmt +nightly --edition 2018 $(find . -type f -iname *.rs)`.
+            Changes from `rustfmt +nightly --edition 2021 $(find . -type f -iname *.rs)`.
           branch: rustfmt
           # Delete branch when merged
           delete-branch: true

rustfmt.toml

@@ -1,3 +1,5 @@
+# https://github.com/kube-rs/kube/issues/707
+unstable_features = true
 overflow_delimited_expr = true
 newline_style = "Unix"
 imports_granularity = "Crate"