Merge pull request #423 from matthiasbeyer/fix-clippy

Fix clippy: Remove needless borrowed reference

Author: matthiasbeyer

.github/workflows/msrv.yml

@@ -92,13 +92,19 @@ jobs:
     needs: [check]
     name: Clippy
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.60.0
+          - stable
     steps:
       - name: Checkout sources
         uses: actions/[email protected]
 
       - name: Install toolchain
-        uses: dtolnay/rust-toolchain@1.60.0
+        uses: dtolnay/rust-toolchain@master
         with:
+          toolchain: ${{ matrix.rust }}
           components: clippy
 
       - name: Run cargo clippy

src/de.rs

@@ -243,7 +243,7 @@ impl<'de> de::MapAccess<'de> for MapAccess {
     where
         K: de::DeserializeSeed<'de>,
     {
-        if let Some(&(ref key_s, _)) = self.elements.front() {
+        if let Some((ref key_s, _)) = self.elements.front() {
             let key_de = Value::new(None, key_s as &str);
             let key = de::DeserializeSeed::deserialize(seed, key_de)?;