Fix test_cross with cross 0.2.2 (#251)

* Fix `test_cross` with cross 0.2.2

* Try update `Cross.toml`

Author: messense

.github/workflows/ci.yml

@@ -253,7 +253,7 @@ jobs:
           toolchain: stable
           override: true
       - name: Install cross
-        run: cargo install --version 0.2.1 cross
+        run: cargo install cross
       - name: Build package
         run: pip install -e .
       - name: Build wheel using cross

examples/namespace_package/Cross.toml

@@ -1,9 +1,7 @@
 [target.aarch64-unknown-linux-gnu]
 image = "cross-pyo3:aarch64-unknown-linux-gnu"
-
-[build.env]
-passthrough = [
+env.passthrough = [
     "RUST_BACKTRACE",
-		"RUST_LOG",
-		"PYO3_CROSS_LIB_DIR",
+    "RUST_LOG",
+    "PYO3_CROSS_LIB_DIR",
 ]

setuptools_rust/build.py

@@ -695,6 +695,7 @@ def _prepare_build_environment(cross_lib: Optional[str]) -> Dict[str, str]:
     if cross_lib:
         env.setdefault("PYO3_CROSS_LIB_DIR", cross_lib)
 
+    env.pop("CARGO", None)
     return env