Update deps and add note to wait() (#22)

* Update deps

* Add note to wait on cancel safety

* Bump rust version

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
           - windows
         toolchain:
           - stable
-          - 1.60.0
+          - 1.68.0
         features:
           - default
           - with-tokio

Cargo.toml

@@ -14,21 +14,21 @@ readme = "README.md"
 
 edition = "2021"
 exclude = ["/bin", "/.github"]
-rust-version = "1.60.0"
+rust-version = "1.68.0"
 
 # there are a few windows-specific ones
 autoexamples = false
 
 [dependencies]
-async-trait = { version = "0.1.50", optional = true }
+async-trait = { version = "0.1.74", optional = true }
 
 [dependencies.tokio]
-version = "1.10.0"
+version = "1.33.0"
 features = ["io-util", "macros", "process", "rt"]
 optional = true
 
 [target.'cfg(unix)'.dependencies.nix]
-version = "0.26.1"
+version = "0.27.1"
 default-features = false
 features = ["fs", "poll", "signal"]
 

README.md

@@ -8,7 +8,7 @@ _Extension to [`Command`](https://doc.rust-lang.org/std/process/struct.Command.h
 
 - **[API documentation][docs]**.
 - [Dual-licensed][copyright] with Apache 2.0 and MIT.
-- Minimum Supported Rust Version: 1.60.0.
+- Minimum Supported Rust Version: 1.68.0.
   - Only the last five stable versions are supported.
   - MSRV increases within that range at publish time will not incur major version bumps.
 

src/lib.rs

@@ -6,11 +6,7 @@
 #![doc = "\n"]
 #![cfg_attr(
 	unix,
-	doc = "On Unix, the [`UnixChildExt`] trait additionally provides"
-)]
-#![cfg_attr(
-	unix,
-	doc = "support for sending signals to processes and process groups (it’s implemented on this crate’s [`GroupChild`],"
+	doc = "On Unix, the [`UnixChildExt`] trait additionally provides support for sending signals to processes and process groups (it’s implemented on this crate’s [`GroupChild`],"
 )]
 #![cfg_attr(
 	all(unix, feature = "with-tokio"),

src/stdlib/child/unix.rs

@@ -1,9 +1,12 @@
 use std::{
 	convert::TryInto,
 	io::{Error, ErrorKind, Read, Result},
-	os::unix::{
-		io::{AsRawFd, RawFd},
-		process::ExitStatusExt,
+	os::{
+		fd::BorrowedFd,
+		unix::{
+			io::{AsRawFd, RawFd},
+			process::ExitStatusExt,
+		},
 	},
 	process::{Child, ChildStderr, ChildStdin, ChildStdout, ExitStatus},
 };
@@ -139,9 +142,13 @@ impl ChildImp {
 		set_nonblocking(out_fd, true)?;
 		set_nonblocking(err_fd, true)?;
 
+		// SAFETY: these are dropped at the same time as all other FDs here
+		let out_bfd = unsafe { BorrowedFd::borrow_raw(out_fd) };
+		let err_bfd = unsafe { BorrowedFd::borrow_raw(err_fd) };
+
 		let mut fds = [
-			PollFd::new(out_fd, PollFlags::POLLIN),
-			PollFd::new(err_fd, PollFlags::POLLIN),
+			PollFd::new(&out_bfd, PollFlags::POLLIN),
+			PollFd::new(&err_bfd, PollFlags::POLLIN),
 		];
 
 		loop {

src/tokio/child.rs

@@ -207,8 +207,8 @@ impl AsyncGroupChild {
 	///
 	/// See [the Tokio documentation](Child::wait) for more.
 	///
-	/// The current implementation spawns a blocking task on the Tokio thread pool; contributions
-	/// are welcome for a more async-y version.
+	/// The current implementation spawns a blocking task on the Tokio thread pool **and is not
+	/// cancel-safe** (you shouldn't call it twice); contributions are welcome for a better version.
 	///
 	/// # Examples
 	///