fix macOS and android CI

tokio/src/net/unix/pipe.rs

@@ -1326,7 +1326,9 @@ fn is_pipe(fd: BorrowedFd<'_>) -> io::Result<bool> {
     if r == -1 {
         Err(io::Error::last_os_error())
     } else {
-        Ok((stat.st_mode & libc::S_IFMT) == libc::S_IFIFO)
+        // on some platforms `st_mode` is larger than `S_IFMT` and `S_IFIFO`.
+        #[allow(clippy::useless_conversion)]
+        Ok((stat.st_mode & libc::S_IFMT) == libc::S_IFIFO.into())
     }
 }
 

tokio/tests/net_unix_pipe.rs

@@ -9,7 +9,7 @@ use tokio_test::{assert_err, assert_ok, assert_pending, assert_ready_ok};
 use std::fs::File;
 use std::io;
 use std::os::unix::fs::OpenOptionsExt;
-use std::os::unix::io::{AsRawFd, FromRawFd, OwnedFd};
+use std::os::unix::io::AsRawFd;
 use std::path::{Path, PathBuf};
 
 /// Helper struct which will clean up temporary files once dropped.
@@ -489,6 +489,7 @@ async fn anon_pipe_spawn_echo() -> std::io::Result<()> {
 #[cfg(target_os = "linux")]
 async fn anon_pipe_from_owned_fd() -> std::io::Result<()> {
     use nix::fcntl::OFlag;
+    use std::os::unix::io::{FromRawFd, OwnedFd};
 
     const DATA: &[u8] = b"this is some data to write to the pipe";