Update to clap 4. (#2380)

* Update to clap 4.

* Bump MSRV to minimum required by clap 4.

* Mention clap update in CHANGELOG.

.github/workflows/bindgen.yml

@@ -48,11 +48,11 @@ jobs:
           profile: minimal
           # MSRV below is documented in Cargo.toml and README.md, please update those if you
           # change this.
-          toolchain: 1.57.0
+          toolchain: 1.60.0
           override: true
 
       - name: Build with msrv
-        run: rm Cargo.lock && cargo +1.57.0 build --lib
+        run: rm Cargo.lock && cargo +1.60.0 build --lib
 
   quickchecking:
     runs-on: ubuntu-latest

CHANGELOG.md

@@ -160,7 +160,8 @@
    argument instead of a `&str`.
  * Updated the `clang-sys` crate version to 1.4.0 to support clang 15.
  * The return type is now ommited in signatures of functions returning `void`.
-
+ * Updated the `clap` dependency for `bindgen-cli` to 4.
+
 ## Removed
 
 ## Fixed

README.md

@@ -39,7 +39,7 @@ extern "C" {
 
 ## MSRV
 
-The minimum supported Rust version is **1.57.0**.
+The minimum supported Rust version is **1.60.0**.
 
 No MSRV bump policy has been established yet, so MSRV may increase in any release.
 

bindgen-cli/Cargo.toml

@@ -14,7 +14,7 @@ homepage = "https://rust-lang.github.io/rust-bindgen/"
 version = "0.63.0"
 edition = "2018"
 # If you change this, also update README.md and msrv in .github/workflows/bindgen.yml
-rust-version = "1.57.0"
+rust-version = "1.60.0"
 
 [[bin]]
 path = "main.rs"
@@ -23,7 +23,7 @@ name = "bindgen"
 [dependencies]
 bindgen = { path = "../bindgen", version = "=0.63.0" }
 shlex = "1"
-clap = "3"
+clap = "4"
 env_logger = { version = "0.9.0", optional = true }
 log = { version = "0.4", optional = true }