Run Rust tests using Valgrind and cargo-careful.

.github/workflows/ci.yml

@@ -318,6 +318,56 @@ jobs:
       # 1.49.
       CARGO_PRIMARY_PACKAGE: 1
 
+  valgrind:
+    needs: [fmt]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+      - uses: Swatinem/rust-cache@v1
+        with:
+          key: valgrind-cargo
+        continue-on-error: true
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+          profile: minimal
+      - uses: taiki-e/install-action@valgrind
+      - run: python -m pip install -U pip nox
+      # FIXME(adamreichold): Drop skip-macros when Valgrind understands DWARF5 as generated by LLVM 14,
+      # c.f. https://bugs.kde.org/show_bug.cgi?id=452758#c35
+      - run: nox -s test-rust -- release skip-full skip-macros
+    env:
+      CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUNNER: valgrind --leak-check=no --error-exitcode=1
+      RUST_BACKTRACE: 1
+
+  careful:
+    needs: [fmt]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+      - uses: Swatinem/rust-cache@v1
+        with:
+          key: careful-cargo
+        continue-on-error: true
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          override: true
+          profile: minimal
+          components: rust-src
+      - run: cargo install cargo-careful
+      - run: python -m pip install -U pip nox
+      - run: nox -s test-rust -- careful skip-full
+    env:
+      RUST_BACKTRACE: 1
+
   coverage:
     needs: [fmt]
     name: coverage-${{ matrix.os }}

noxfile.py

@@ -21,14 +21,16 @@ def test(session: nox.Session) -> None:
 @nox.session(name="test-rust", venv_backend="none")
 def test_rust(session: nox.Session):
     _run_cargo_test(session, package="pyo3-build-config")
-    _run_cargo_test(session, package="pyo3-macros-backend")
-    _run_cargo_test(session, package="pyo3-macros")
+    if not "skip-macros" in session.posargs:
+        _run_cargo_test(session, package="pyo3-macros-backend")
+        _run_cargo_test(session, package="pyo3-macros")
     _run_cargo_test(session, package="pyo3-ffi")
 
     _run_cargo_test(session)
     _run_cargo_test(session, features="abi3")
-    _run_cargo_test(session, features="full")
-    _run_cargo_test(session, features="abi3 full")
+    if not "skip-full" in session.posargs:
+        _run_cargo_test(session, features="full")
+        _run_cargo_test(session, features="abi3 full")
 
 
 @nox.session(name="test-py", venv_backend="none")
@@ -290,7 +292,12 @@ def _run_cargo_test(
     package: Optional[str] = None,
     features: Optional[str] = None,
 ) -> None:
-    command = ["cargo", "test"]
+    command = ["cargo"]
+    if "careful" in session.posargs:
+        command.append("careful")
+    command.append("test")
+    if "release" in session.posargs:
+        command.append("--release")
     if package:
         command.append(f"--package={package}")
     if features: