Vendor dependencies for 0.3.0 release

vendor/nix/test/sys/test_aio_drop.rs

@@ -0,0 +1,35 @@
+// Test dropping an AioCb that hasn't yet finished.
+// This must happen in its own process, because on OSX this test seems to hose
+// the AIO subsystem and causes subsequent tests to fail
+#[test]
+#[should_panic(expected = "Dropped an in-progress AioCb")]
+#[cfg(all(
+    not(target_env = "musl"),
+    not(target_env = "uclibc"),
+    not(target_env = "ohos"),
+    any(
+        target_os = "linux",
+        apple_targets,
+        target_os = "freebsd",
+        target_os = "netbsd"
+    )
+))]
+fn test_drop() {
+    use nix::sys::aio::*;
+    use nix::sys::signal::*;
+    use std::os::unix::io::AsFd;
+    use tempfile::tempfile;
+
+    const WBUF: &[u8] = b"CDEF";
+
+    let f = tempfile().unwrap();
+    f.set_len(6).unwrap();
+    let mut aiocb = Box::pin(AioWrite::new(
+        f.as_fd(),
+        2, //offset
+        WBUF,
+        0, //priority
+        SigevNotify::SigevNone,
+    ));
+    aiocb.as_mut().submit().unwrap();
+}