Fixes.

Cargo.toml

@@ -21,7 +21,7 @@ rust-version = "1.63"
 os_pipe = { version = "1.0.0", features = ["io_safety"], optional = true }
 
 # Optionally depend on async-std just to provide impls for its types.
-async-std = { version = ">=1.12, <=1.13", optional = true }
+async-std = { version = "1.13.0", optional = true, features = ["io_safety"] }
 # Optionally depend on tokio to implement traits for its types.
 tokio = { version = "1.6.0", features = ["io-std", "fs", "net", "process"], optional = true }
 # Optionally depend on socket2 to implement traits for its types.
@@ -48,8 +48,13 @@ features = [
 
 [package.metadata.docs.rs]
 features = ["close"]
-rustdoc-args = ["--cfg", "doc_cfg"]
 
 [features]
 default = []
 close = ["libc", "hermit-abi", "windows-sys"]
+
+[lints.rust.unexpected_cfgs]
+level = "warn"
+check-cfg = [
+    'cfg(wasi_ext)',
+]

src/lib.rs

@@ -32,7 +32,7 @@
 #![cfg_attr(all(wasi_ext, target_os = "wasi"), feature(wasi_ext))]
 // Currently supported platforms.
 #![cfg(any(unix, windows, target_os = "wasi", target_os = "hermit"))]
-#![cfg_attr(doc_cfg, feature(doc_cfg))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 mod portability;
 mod traits;
@@ -133,7 +133,7 @@ pub use portability::{
 };
 
 #[cfg(feature = "close")]
-#[cfg_attr(doc_cfg, doc(cfg(feature = "close")))]
+#[cfg_attr(docsrs, doc(cfg(feature = "close")))]
 pub mod example_ffi;
 pub mod raw;
 pub mod views;

src/views.rs

@@ -236,22 +236,22 @@ unsafe impl FilelikeViewType for os_pipe::PipeReader {}
 unsafe impl SocketlikeViewType for socket2::Socket {}
 
 #[cfg(not(any(target_os = "wasi", target_os = "hermit")))]
-#[cfg(feature = "async_std")]
+#[cfg(feature = "async-std")]
 unsafe impl SocketlikeViewType for async_std::net::TcpStream {}
 #[cfg(not(any(target_os = "wasi", target_os = "hermit")))]
-#[cfg(feature = "async_std")]
+#[cfg(feature = "async-std")]
 unsafe impl SocketlikeViewType for async_std::net::TcpListener {}
 #[cfg(not(any(target_os = "wasi", target_os = "hermit")))]
-#[cfg(feature = "async_std")]
+#[cfg(feature = "async-std")]
 unsafe impl SocketlikeViewType for async_std::net::UdpSocket {}
 #[cfg(unix)]
-#[cfg(feature = "async_std")]
+#[cfg(feature = "async-std")]
 unsafe impl SocketlikeViewType for async_std::os::unix::net::UnixStream {}
 #[cfg(unix)]
-#[cfg(feature = "async_std")]
+#[cfg(feature = "async-std")]
 unsafe impl SocketlikeViewType for async_std::os::unix::net::UnixListener {}
 #[cfg(unix)]
-#[cfg(feature = "async_std")]
+#[cfg(feature = "async-std")]
 unsafe impl SocketlikeViewType for async_std::os::unix::net::UnixDatagram {}
 
 #[cfg(feature = "mio")]