Add MSRV minimal versions in CI

Author: Empty2k12

.github/workflows/rust.yml

@@ -44,6 +44,20 @@ jobs:
       - name: Check code formatting
         run: cargo fmt --all -- --check
 
+  # this checks the msrv
+  msrv:
+    name: Verify MSRV
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: baptiste0928/cargo-install@v3
+        with:
+          crate: cargo-msrv
+      - name: Verify minimum rust version of influxdb crate
+        run: cargo msrv --path influxdb --output-format json verify
+      - name: Verify minimum rust version of influxdb_derive crate
+        run: cargo msrv --path influxdb_derive --output-format json verify
+
   # this tests that all unit and doc tests are successful
   unit_tests:
     name: Unit and Doc Tests (Rust ${{matrix.rust.name}} on ${{matrix.os}})
@@ -53,9 +67,6 @@ jobs:
       fail-fast: false
       matrix:
         rust:
-          - name: MSRV
-            toolchain: "1.65"
-            nightly: false
           - name: Stable
             toolchain: stable
             nightly: false
@@ -78,7 +89,7 @@ jobs:
             ~/.cargo/git
             ~/.cargo/registry
             target
-          key: "${{runner.os}} Rust ${{steps.rust-toolchain.outputs.cachekey}}"
+          key: "${{matrix.rust.toolchain}} on ${{runner.os}} Rust ${{steps.rust-toolchain.outputs.cachekey}}"
       - run: cargo test --lib
       - run: cargo test --doc
 

influxdb/Cargo.toml

@@ -11,6 +11,7 @@ license = "MIT"
 readme = "README.md"
 include = ["src/**/*", "tests/**/*", "Cargo.toml", "LICENSE"]
 repository = "https://github.com/influxdb-rs/influxdb-rust"
+rust-version = "1.65"
 
 [dependencies]
 chrono = { version = "0.4.23", features = ["serde"], default-features = false }

influxdb_derive/Cargo.toml

@@ -11,6 +11,7 @@ license = "MIT"
 readme = "README.md"
 include = ["src/**/*", "tests/**/*", "Cargo.toml", "LICENSE"]
 repository = "https://github.com/influxdb-rs/influxdb-rust"
+rust-version = "1.65"
 
 [lib]
 proc-macro = true