silence dead code warnings for windows

src/read/pipelining.rs

@@ -1,5 +1,7 @@
 //! Pipelined extraction into a filesystem directory.
 
+#![cfg_attr(not(unix), allow(dead_code))]
+
 pub mod path_splitting {
     use displaydoc::Display;
     use thiserror::Error;
@@ -461,6 +463,7 @@ pub mod handle_creation {
                 FSEntry::File(data) => {
                     let key = ZipDataHandle::wrap(data);
 
+                    #[cfg_attr(not(unix), allow(unused_variables))]
                     if let Some(mode) = data.unix_mode() {
                         /* TODO: consider handling the readonly bit on windows. We don't currently
                          * do this in normal extraction, so we don't need to do this yet for
@@ -479,6 +482,7 @@ pub mod handle_creation {
                     assert!(file_handle_mapping.insert(key, handle).is_none());
                 }
                 FSEntry::Dir(DirEntry {
+                    #[cfg(unix)]
                     properties,
                     children,
                 }) => {

src/read/split.rs

@@ -1,5 +1,7 @@
 //! Traits for splitting and teeing file contents into multiple parallel streams.
 
+#![cfg_attr(not(unix), allow(dead_code))]
+
 macro_rules! interruptible_buffered_io_op {
     ($op:expr) => {
         match $op {
@@ -10,6 +12,7 @@ macro_rules! interruptible_buffered_io_op {
     };
 }
 
+#[cfg_attr(not(unix), allow(unused_macros))]
 macro_rules! syscall_errno {
     ($syscall:expr) => {
         match $syscall {