Raise required compiler to Rust 1.61

Author: dtolnay

.github/workflows/ci.yml

@@ -44,7 +44,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust: [beta, 1.65.0, 1.56.1]
+        rust: [beta, 1.65.0, 1.61.0]
         os: [ubuntu]
         include:
           - rust: stable
@@ -68,11 +68,12 @@ jobs:
       - run: cargo check --manifest-path tests/crate/Cargo.toml --no-default-features --features alloc,arbitrary_precision
       - run: cargo check --manifest-path tests/crate/Cargo.toml --no-default-features --features alloc,raw_value
       - run: cargo check --manifest-path tests/crate/Cargo.toml --features serde_json/preserve_order
-        if: matrix.rust != '1.56.1'
+        if: matrix.rust != '1.61.0'
       - run: cargo check --manifest-path tests/crate/Cargo.toml --no-default-features --features alloc,serde_json/preserve_order
-        if: matrix.rust != '1.56.1'
+        if: matrix.rust != '1.61.0'
       - name: Build without std
-        run: cargo check --manifest-path tests/crate/Cargo.toml --target ${{matrix.target}} --no-default-features --features alloc
+        run: cargo check --manifest-path tests/crate/Cargo.toml --target
+          ${{matrix.target}} --no-default-features --features alloc
         if: matrix.target
 
   minimal:

Cargo.toml

@@ -9,7 +9,7 @@ edition = "2021"
 keywords = ["json", "serde", "serialization"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/serde-rs/json"
-rust-version = "1.56"
+rust-version = "1.61"
 
 [dependencies]
 indexmap = { version = "2.2.3", optional = true }