From 598fc2b0923339d8d8afdd66d2fa4aa018f2d804 Mon Sep 17 00:00:00 2001
From: Josh Stone <cuviper@gmail.com>
Date: Tue, 8 Feb 2022 10:59:30 -0800
Subject: [PATCH] Prepare for indexmap 1.9.0, with MSRV 1.56

(cherry picked from commit 61bb73ed5d5b6c092a7ffe43f193db38497c1df2)
---
 .github/workflows/ci.yml |  4 ++--
 .rustfmt.toml            |  2 +-
 Cargo.toml               | 28 ++++++----------------------
 README.rst               |  4 ++--
 src/lib.rs               |  2 +-
 test-nostd/Cargo.toml    |  3 +--
 test-serde/Cargo.toml    |  3 +--
 7 files changed, 14 insertions(+), 32 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 13696ee..8c6c10c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         include:
-          - rust: 1.49.0 # MSRV
+          - rust: 1.56.0 # MSRV
             features:
           - rust: stable
             features: serde
@@ -59,7 +59,7 @@ jobs:
     strategy:
       matrix:
         include:
-          - rust: 1.49.0
+          - rust: 1.56.0
             target: thumbv6m-none-eabi
           - rust: stable
             target: thumbv6m-none-eabi
diff --git a/.rustfmt.toml b/.rustfmt.toml
index 32a9786..3a26366 100644
--- a/.rustfmt.toml
+++ b/.rustfmt.toml
@@ -1 +1 @@
-edition = "2018"
+edition = "2021"
diff --git a/Cargo.toml b/Cargo.toml
index b8848f3..7ebffe6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,37 +1,21 @@
 [package]
 name = "indexmap"
-edition = "2018"
-version = "1.8.2"
-authors = [
-"bluss",
-"Josh Stone <cuviper@gmail.com>"
-]
+edition = "2021"
+version = "1.9.0"
 documentation = "https://docs.rs/indexmap/"
 repository = "https://github.com/bluss/indexmap"
-license = "Apache-2.0/MIT"
-description = """
-A hash table with consistent order and fast iteration.
-
-The indexmap is a hash table where the iteration order of the key-value
-pairs is independent of the hash values of the keys. It has the usual
-hash table functionality, it preserves insertion order except after
-removals, and it allows lookup of its elements by either hash table key
-or numerical index. A corresponding hash set type is also provided.
-
-This crate was initially published under the name ordermap, but it was renamed to
-indexmap.
-"""
-
+license = "Apache-2.0 OR MIT"
+description = "A hash table with consistent order and fast iteration."
 keywords = ["hashmap", "no_std"]
 categories = ["data-structures", "no-std"]
-
-build = "build.rs"
+rust-version = "1.56"
 
 [lib]
 bench = false
 
 [build-dependencies]
 autocfg = "1"
+
 [dependencies]
 serde = { version = "1.0", optional = true, default-features = false }
 rayon = { version = "1.4.1", optional = true }
diff --git a/README.rst b/README.rst
index da76a68..4dac24f 100644
--- a/README.rst
+++ b/README.rst
@@ -12,8 +12,8 @@ indexmap
 .. |docs| image:: https://docs.rs/indexmap/badge.svg
 .. _docs: https://docs.rs/indexmap
 
-.. |rustc| image:: https://img.shields.io/badge/rust-1.49%2B-orange.svg
-.. _rustc: https://img.shields.io/badge/rust-1.49%2B-orange.svg
+.. |rustc| image:: https://img.shields.io/badge/rust-1.56%2B-orange.svg
+.. _rustc: https://img.shields.io/badge/rust-1.56%2B-orange.svg
 
 A pure-Rust hash table which preserves (in a limited sense) insertion order.
 
diff --git a/src/lib.rs b/src/lib.rs
index 8c44d7b..ba61334 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -53,7 +53,7 @@
 //!
 //! ### Rust Version
 //!
-//! This version of indexmap requires Rust 1.49 or later.
+//! This version of indexmap requires Rust 1.56 or later.
 //!
 //! The indexmap 1.x release series will use a carefully considered version
 //! upgrade policy, where in a later 1.x version, we will raise the minimum
diff --git a/test-nostd/Cargo.toml b/test-nostd/Cargo.toml
index 0201a72..3ae606d 100644
--- a/test-nostd/Cargo.toml
+++ b/test-nostd/Cargo.toml
@@ -1,9 +1,8 @@
 [package]
 name = "test-nostd"
 version = "0.1.0"
-authors = ["bluss"]
 publish = false
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 indexmap = { path = "..", features = ["serde-1"] }
diff --git a/test-serde/Cargo.toml b/test-serde/Cargo.toml
index f7abc9e..791c0a3 100644
--- a/test-serde/Cargo.toml
+++ b/test-serde/Cargo.toml
@@ -1,9 +1,8 @@
 [package]
 name = "test-serde"
 version = "0.1.0"
-authors = ["bluss"]
 publish = false
-edition = "2018"
+edition = "2021"
 
 [dependencies]