check for minimum rust version

.github/workflows/test.yml

@@ -35,6 +35,17 @@ jobs:
       - uses: actions/checkout@v3
       - uses: obi1kenobi/cargo-semver-checks-action@v2
 
+  msrv:
+    name: Check Minimum Rust Version
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install MSRV
+        run: cargo install cargo-msrv
+      - name: Check MSRV
+        run: cargo msrv verify
+
+
   examples:
     name: Try Examples
     runs-on: ubuntu-latest

Cargo.toml

@@ -6,6 +6,8 @@
 name = "wellen"
 version = "0.9.9"
 edition = "2021"
+# we require the `div_ceil` method on integers
+rust-version="1.73.0"
 authors = ["Kevin Laeufer <[email protected]>"]
 description = "Fast VCD and FST library for waveform viewers written in Rust."
 repository = "https://github.com/ekiwi/wellen"