Bump Minimum Supported Rust Version (MSRV) from 1.63 to 1.70

Author: felixc

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        container_image: ["rust:1.63-slim", "rust:slim", "rustlang/rust:nightly-slim"]
+        container_image: ["rust:1.70-slim", "rust:slim", "rustlang/rust:nightly-slim"]
     container:
       image: ${{ matrix.container_image }}
     steps:

CHANGELOG

@@ -1,3 +1,6 @@
+UNRELEASED
+  * Update minimum supported Rust version to 1.70 due to dependency reqs.
+
 2023-01-09 - v1.4.0
   * Now supports `gexiv2_metadata_from_app1_segment`, thanks to Hubert Figuière.
 

Cargo.toml

@@ -20,7 +20,7 @@ links = "gexiv2"
 build = "build.rs"
 
 edition = "2021"
-rust-version = "1.63"
+rust-version = "1.70"
 
 include = [
   "Cargo.toml",

README.md

@@ -57,7 +57,7 @@ Given that it links to gexiv2, and transitively to Exiv2, gexiv2-sys obviously
 depends on them. These libraries are not bundled with gexiv2-sys: you will need
 to install them separately.
 
-The minimum supported `rustc` version is 1.63.
+The minimum supported `rustc` version is 1.70.
 
 For full instructions on how to get started with gexiv2-sys, including how to
 install the prerequisite dependencies, refer to the [`SETUP`](SETUP.md) file.