ci: bump MSRV to Rust 1.60

Basically just to fix CI. I don't have the time to worry about MSRV
enough to make CI work for such an old version, so just bump it.

Author: BurntSushi

.github/workflows/ci.yml

@@ -24,10 +24,10 @@ jobs:
         include:
         - build: pinned
           os: ubuntu-latest
-          rust: 1.34.0
+          rust: 1.60.0
         - build: pinned-win
           os: windows-latest
-          rust: 1.34.0
+          rust: 1.60.0
         - build: stable
           os: ubuntu-latest
           rust: stable
@@ -48,7 +48,7 @@ jobs:
           rust: stable-x86_64-gnu
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Install Rust
       uses: dtolnay/rust-toolchain@master
       with:
@@ -62,7 +62,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Install Rust
       uses: dtolnay/rust-toolchain@master
       with:

Cargo.toml

@@ -12,7 +12,8 @@ readme = "README.md"
 keywords = ["same", "file", "equal", "inode"]
 license = "Unlicense/MIT"
 exclude = ["/.github"]
-edition = "2018"
+edition = "2021"
+rust-version = "1.60"
 
 [target.'cfg(windows)'.dependencies.winapi-util]
 version = "0.1.1"

README.md

@@ -37,7 +37,7 @@ fn main() {
 
 ### Minimum Rust version policy
 
-This crate's minimum supported `rustc` version is `1.34.0`.
+This crate's minimum supported `rustc` version is `1.60.0`.
 
 The current policy is that the minimum Rust version required to use this crate
 can be increased in minor version updates. For example, if `crate 1.0` requires