Test cargo minimal versions on CI (#314)

With ron-rs/ron#557, we can test our lower bounds.

Author: konstin

.github/workflows/ci.yml

@@ -11,16 +11,16 @@ env:
 
 jobs:
   test:
-    name: Tests pass
+    name: Tests
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
-      - run: cargo build --verbose --workspace
-      - run: cargo test --all-features --workspace --verbose
+      - run: cargo build --workspace
+      - run: cargo test --all-features --workspace
 
   clippy:
-    name: No warnings from Clippy
+    name: Clippy
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -33,7 +33,7 @@ jobs:
         run: cargo clippy --workspace
 
   check_formatting:
-    name: Source code is formatted
+    name: Formatting
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -43,7 +43,7 @@ jobs:
       - run: cargo fmt --all -- --check
 
   check_documentation:
-    name: Documentation builds successfully
+    name: Docs
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -52,3 +52,13 @@ jobs:
         env:
           RUSTDOCFLAGS: -D warnings
         run: cargo doc --workspace --no-deps --document-private-items
+
+  minimal-versions:
+    name: Minimal versions
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+      - run: cargo +nightly update -Zminimal-versions
+      - run: cargo +nightly build --workspace
+      - run: cargo +nightly test --all-features --workspace

Cargo.lock

@@ -36,7 +36,7 @@ version-ranges = { version = "0.1.0", path = "version-ranges" }
 criterion = { version = "2.7.2", package = "codspeed-criterion-compat" }
 env_logger = "0.11.6"
 proptest = "1.6.0"
-ron = "=0.9.0-alpha.0"
+ron = "=0.9.0-alpha.1"
 varisat = "0.2.2"
 version-ranges = { version = "0.1.0", path = "version-ranges", features = ["proptest"] }
 

Cargo.toml

@@ -18,4 +18,4 @@ serde = ["dep:serde", "smallvec/serde"]
 
 [dev-dependencies]
 proptest = "1.6.0"
-ron = "=0.9.0-alpha.0"
+ron = "=0.9.0-alpha.1"