Bump MSRV to 1.57.0

Author: kulp

.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: 1.56.1
+          toolchain: 1.57.0
           override: true
 
       - name: Build with msrv
-        run: rm Cargo.lock && cargo +1.56.1 build --lib
+        run: rm Cargo.lock && cargo +1.57.0 build --lib
 
   quickchecking:
     runs-on: ubuntu-latest

Cargo.toml

@@ -18,7 +18,7 @@ version = "0.60.1"
 edition = "2018"
 build = "build.rs"
 # If you change this, also update README.md and msrv in .github/workflows/bindgen.yml
-rust-version = "1.56.1"
+rust-version = "1.57.0"
 
 include = [
   "LICENSE",

README.md

@@ -39,7 +39,7 @@ extern "C" {
 
 ## MSRV
 
-The minimum supported Rust version is **1.56.1**.
+The minimum supported Rust version is **1.57.0**.
 
 No MSRV bump policy has been established yet, so MSRV may increase in any release.