ci: fix nightly unused import warnings

pyo3-ffi/src/code.rs

@@ -1,2 +1,4 @@
-#[cfg(Py_LIMITED_API)]
+// This header doesn't exist in CPython, but Include/cpython/code.h does. We add
+// this here so that PyCodeObject has a definition under the limited API.
+
 opaque_struct!(PyCodeObject);

pyo3-ffi/src/lib.rs

@@ -262,6 +262,7 @@ pub use self::boolobject::*;
 pub use self::bytearrayobject::*;
 pub use self::bytesobject::*;
 pub use self::ceval::*;
+#[cfg(Py_LIMITED_API)]
 pub use self::code::*;
 pub use self::codecs::*;
 pub use self::compile::*;
@@ -326,6 +327,7 @@ mod bytesobject;
 // skipped cellobject.h
 mod ceval;
 // skipped classobject.h
+#[cfg(Py_LIMITED_API)]
 mod code;
 mod codecs;
 mod compile;

src/lib.rs

@@ -439,6 +439,7 @@ pub mod once_cell {
     pub use crate::sync::{GILOnceCell, Interned};
 }
 
+#[allow(unused_imports)] // with no features enabled this module has no public exports
 pub use crate::conversions::*;
 
 #[cfg(feature = "macros")]

src/tests/common.rs

@@ -149,4 +149,5 @@ mod inner {
     }
 }
 
+#[allow(unused_imports)] // some tests use just the macros and none of the other functionality
 pub use inner::*;