Raise required rustc from 1.31 to 1.36

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust: [beta, stable, 1.45.0, 1.40.0, 1.38.0, 1.31.0]
+        rust: [beta, stable, 1.45.0, 1.40.0, 1.38.0, 1.36.0]
         os: [ubuntu]
         include:
           - rust: stable
@@ -42,9 +42,9 @@ jobs:
           toolchain: ${{matrix.rust}}
       - run: cargo check
       - run: cargo check --features preserve_order
-        if: matrix.rust != '1.31.0'
+        if: matrix.rust != '1.36.0'
       - run: cargo check --manifest-path tests/crate/Cargo.toml --no-default-features --features alloc,preserve_order
-        if: matrix.rust != '1.31.0'
+        if: matrix.rust != '1.36.0'
       - run: cargo check --features float_roundtrip
       - run: cargo check --features arbitrary_precision
       - run: cargo check --features raw_value

Cargo.toml

@@ -11,7 +11,7 @@ categories = ["encoding"]
 readme = "README.md"
 include = ["build.rs", "src/**/*.rs", "README.md", "LICENSE-APACHE", "LICENSE-MIT"]
 edition = "2018"
-rust-version = "1.31"
+rust-version = "1.36"
 
 [dependencies]
 serde = { version = "1.0.100", default-features = false }

README.md

@@ -1,11 +1,11 @@
-# Serde JSON   [![Build Status]][travis] [![Latest Version]][crates.io] [![Rustc Version 1.31+]][rustc]
+# Serde JSON   [![Build Status]][travis] [![Latest Version]][crates.io] [![Rustc Version 1.36+]][rustc]
 
 [Build Status]: https://img.shields.io/github/workflow/status/serde-rs/json/CI/master
 [travis]: https://github.com/serde-rs/json/actions?query=branch%3Amaster
 [Latest Version]: https://img.shields.io/crates/v/serde_json.svg
 [crates.io]: https://crates.io/crates/serde\_json
-[Rustc Version 1.31+]: https://img.shields.io/badge/rustc-1.31+-lightgray.svg
-[rustc]: https://blog.rust-lang.org/2018/12/06/Rust-1.31-and-rust-2018.html
+[Rustc Version 1.36+]: https://img.shields.io/badge/rustc-1.36+-lightgray.svg
+[rustc]: https://blog.rust-lang.org/2019/07/04/Rust-1.36.0.html
 
 **Serde is a framework for *ser*ializing and *de*serializing Rust data structures efficiently and generically.**