Prep 0.9.3: lints, MSRV, minimal crates (#13)

- Update lints
- Set MSRV and enforce in CI
- Fix crate depenencies and check minimal vesions in CI
- Prep 0.9.3 release

.github/workflows/ci.yml

@@ -9,11 +9,12 @@ concurrency:
   cancel-in-progress: true
 
 env:
-   RUST_BACKTRACE: "1"
-   RUSTFLAGS: "-Dwarnings"
-   RUSTDOCFLAGS: "-Dwarnings"
-   RUSTC_WRAPPER: "sccache"
-   SCCACHE_GHA_ENABLED: "true"
+  MSRV: "1.76"
+  RUST_BACKTRACE: "1"
+  RUSTFLAGS: "-Dwarnings"
+  RUSTDOCFLAGS: "-Dwarnings"
+  RUSTC_WRAPPER: "sccache"
+  SCCACHE_GHA_ENABLED: "true"
 
 jobs:
   lints:
@@ -23,7 +24,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: rustfmt, clippy
-      - uses: mozilla-actions/sccache-action@v0.0.3
+      - uses: mozilla-actions/sccache-action@v0.0.6
       - run: cargo fmt --check
       - run: cargo clippy --no-deps
       - run: cargo doc --no-deps --document-private-items
@@ -37,9 +38,28 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
-      - uses: mozilla-actions/sccache-action@v0.0.3
+      - uses: mozilla-actions/sccache-action@v0.0.6
       - uses: taiki-e/install-action@nextest
       - run: cargo test
       - run: cargo nextest run
-
-
+  minimal-crates:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+      - uses: mozilla-actions/sccache-action@v0.0.6
+      - name: cargo check
+        run: |
+          rm -f Cargo.lock
+          cargo +nightly check -Z minimal-versions
+  msrv:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ env.MSRV }}
+      - uses: mozilla-actions/sccache-action@v0.0.6
+      - name: Check MSRV
+        run: |
+          cargo +$MSRV check

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## v0.9.3
+
+- Specify an MSRV in Cargo.toml, checked in CI.
+- The minimal versions for dependencies are tweaked and now checked in CI.
+
 ## v0.9.2
 
 - Pin cargo-platform dependency so we do not exceed MSRV of 0.76.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "testdir"
-version = "0.9.2"
+version = "0.9.3"
 authors = ["Floris Bruynooghe <flub@devork.be>"]
 edition = "2021"
 description = "Semi-persistent, scoped test directories"
@@ -10,8 +10,11 @@ license = "MIT OR Apache-2.0"
 keywords = ["test", "temp", "temporary", "directory"]
 categories = ["development-tools::testing", "filesystem"]
 
+# Sadly this also needs to be updated in .github/workflows/ci.yml
+rust-version = "1.76"
+
 [dependencies]
-anyhow = "1"
+anyhow = "1.0.20"
 backtrace = "0.3.55"
 cargo_metadata = "0.14.0"
 once_cell = "1.5"

src/macros.rs

@@ -59,7 +59,7 @@
 ///
 /// The module path is valid in any scope, so can be used together with [once_cell] (or
 /// [lazy_static]) to share a common directory between different tests.
-/// ```
+/// ```no_run
 /// use std::path::PathBuf;
 /// use once_cell::sync::Lazy;
 /// use testdir::testdir;

src/numbered_dir.rs

@@ -354,7 +354,7 @@ mod tests {
 
         let dir0 = NumberedDir::create(parent.path(), "base", NonZeroU8::new(3).unwrap()).unwrap();
         let dir1 = NumberedDir::create(parent.path(), "base", NonZeroU8::new(3).unwrap()).unwrap();
-        let dirs = vec![dir0, dir1];
+        let dirs = [dir0, dir1];
 
         for numdir in NumberedDir::iterate(parent.path(), "base").unwrap() {
             assert!(dirs.contains(&numdir));