minor: bump indexmap to 2.1.0

.evergreen/config.yml

@@ -195,9 +195,9 @@ axes:
   - id: "extra-rust-versions"
     values:
       - id: "min"
-        display_name: "1.61 (minimum supported version)"
+        display_name: "1.64 (minimum supported version)"
         variables:
-          RUST_VERSION: "1.61.0"
+          RUST_VERSION: "1.64.0"
           MSRV: "true"
       - id: "nightly"
         display_name: "nightly"

Cargo.toml

@@ -58,7 +58,7 @@ chrono = { version = "0.4.15", features = ["std"], default-features = false, opt
 rand = "0.8"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = { version = "1.0", features = ["preserve_order"] }
-indexmap = "1.6.2"
+indexmap = "2.1.0"
 hex = "0.4.2"
 base64 = "0.13.0"
 once_cell = "1.5.1"

README.md

@@ -51,7 +51,7 @@ Note that if you are using `bson` through the `mongodb` crate, you do not need t
 | `uuid-0_8`   | Enable support for v0.8 of the [`uuid`](https://docs.rs/uuid/0.8) crate in the public API.                  | n/a                | no      |
 | `uuid-1`     | Enable support for v1.x of the [`uuid`](https://docs.rs/uuid/1.0) crate in the public API.                  | n/a                | no      |
 | `serde_with` | Enable [`serde_with`](https://docs.rs/serde_with/1.x) 1.x integrations for `bson::DateTime` and `bson::Uuid`.| serde_with         | no      |
-| `serde_with-3` | Enable [`serde_with`](https://docs.rs/serde_with/3.x) 3.x integrations for `bson::DateTime` and `bson::Uuid`.  Requires Rust 1.61. | serde_with         | no      |
+| `serde_with-3` | Enable [`serde_with`](https://docs.rs/serde_with/3.x) 3.x integrations for `bson::DateTime` and `bson::Uuid`.| serde_with         | no      |
 ## Overview of the BSON Format
 
 BSON, short for Binary JSON, is a binary-encoded serialization of JSON-like documents.
@@ -257,7 +257,7 @@ This crate compiles to the `wasm32-unknown-unknown` target; when doing so, the `
 
 ## Minimum supported Rust version (MSRV)
 
-The MSRV for this crate is currently 1.61.0. This will be rarely be increased, and if it ever is,
+The MSRV for this crate is currently 1.64.0. This will be rarely be increased, and if it ever is,
 it will only happen in a minor or major version release.
 
 ## Contributing

clippy.toml

@@ -1 +1 @@
-msrv = "1.61.0"
+msrv = "1.64.0"

src/bson.rs

@@ -37,7 +37,7 @@ use crate::{
 };
 
 /// Possible BSON value types.
-#[derive(Clone, PartialEq)]
+#[derive(Clone, Default, PartialEq)]
 pub enum Bson {
     /// 64-bit binary floating point
     Double(f64),
@@ -50,6 +50,7 @@ pub enum Bson {
     /// Boolean value
     Boolean(bool),
     /// Null value
+    #[default]
     Null,
     /// Regular expression
     RegularExpression(Regex),
@@ -86,12 +87,6 @@ pub enum Bson {
 /// Alias for `Vec<Bson>`.
 pub type Array = Vec<Bson>;
 
-impl Default for Bson {
-    fn default() -> Self {
-        Bson::Null
-    }
-}
-
 impl Display for Bson {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
         match *self {

src/lib.rs

@@ -43,7 +43,7 @@
 //!
 //! ## Installation
 //! ### Requirements
-//! - Rust 1.61+
+//! - Rust 1.64+
 //!
 //! ### Importing
 //! This crate is available on [crates.io](https://crates.io/crates/bson). To use it in your application,
@@ -267,7 +267,7 @@
 //!
 //! ## Minimum supported Rust version (MSRV)
 //!
-//! The MSRV for this crate is currently 1.61.0. This will be rarely be increased, and if it ever is,
+//! The MSRV for this crate is currently 1.64.0. This will be rarely be increased, and if it ever is,
 //! it will only happen in a minor or major version release.
 
 #![allow(clippy::cognitive_complexity, clippy::derive_partial_eq_without_eq)]