Fix some unused import warnings in the tests

Author: asomers

test/test_unistd.rs

@@ -1,6 +1,6 @@
 #[cfg(not(target_os = "redox"))]
 use nix::fcntl::{self, open, readlink};
-use nix::fcntl::{fcntl, FcntlArg, FdFlag, OFlag};
+use nix::fcntl::OFlag;
 use nix::unistd::*;
 use nix::unistd::ForkResult::*;
 #[cfg(not(target_os = "redox"))]
@@ -13,14 +13,14 @@ use nix::errno::Errno;
 #[cfg(not(target_os = "redox"))]
 use nix::Error;
 use std::{env, iter};
-#[cfg(not(target_os = "redox"))]
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox")))]
 use std::ffi::CString;
 #[cfg(not(target_os = "redox"))]
 use std::fs::DirBuilder;
 use std::fs::{self, File};
 use std::io::Write;
 use std::os::unix::prelude::*;
-#[cfg(not(target_os = "redox"))]
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox")))]
 use std::path::Path;
 use tempfile::{tempdir, tempfile};
 use libc::{_exit, mode_t, off_t};
@@ -135,6 +135,8 @@ fn test_mkfifoat_none() {
     target_os = "macos", target_os = "ios",
     target_os = "android", target_os = "redox")))]
 fn test_mkfifoat() {
+    use nix::fcntl;
+
     let tempdir = tempdir().unwrap();
     let dirfd = open(tempdir.path(), OFlag::empty(), Mode::empty()).unwrap();
     let mkfifoat_name = "mkfifoat_name";
@@ -258,7 +260,7 @@ fn test_initgroups() {
     setgroups(&old_groups).unwrap();
 }
 
-#[cfg(not(target_os = "redox"))]
+#[cfg(not(any(target_os = "fuchsia", target_os = "redox")))]
 macro_rules! execve_test_factory(
     ($test_name:ident, $syscall:ident, $exe: expr $(, $pathname:expr, $flags:expr)*) => (
 
@@ -669,6 +671,8 @@ fn test_pipe() {
           target_os = "solaris"))]
 #[test]
 fn test_pipe2() {
+    use nix::fcntl::{fcntl, FcntlArg, FdFlag};
+
     let (fd0, fd1) = pipe2(OFlag::O_CLOEXEC).unwrap();
     let f0 = FdFlag::from_bits_truncate(fcntl(fd0, FcntlArg::F_GETFD).unwrap());
     assert!(f0.contains(FdFlag::FD_CLOEXEC));