Only check library against MSRV

.github/workflows/build.yml

@@ -17,7 +17,6 @@ jobs:
           - stable
           - beta
           - nightly
-          - 1.57
         os: [ubuntu-20.04]
         # but only stable on macos/windows (slower platforms)
         include:
@@ -68,6 +67,22 @@ jobs:
       - name: cargo test (release; no run)
         run: cargo test --release --no-run
 
+  msrv:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+        with:
+          persist-credentials: false
+
+      - name: Install rust toolchain
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: "1.60"
+
+      - name: Check MSRV
+        run: cargo check --lib --all-features
+
   docs:
     name: Check for documentation errors
     runs-on: ubuntu-18.04

Cargo.toml

@@ -2,7 +2,7 @@
 name = "hyper-rustls"
 version = "0.24.0"
 edition = "2021"
-rust-version = "1.57"
+rust-version = "1.60"
 license = "Apache-2.0 OR ISC OR MIT"
 readme = "README.md"
 description = "Rustls+hyper integration for pure rust HTTPS"