Relax lifetime requirements for FdSet::{insert, remove, contains}

Fixes #2130

CHANGELOG.md

@@ -3,6 +3,13 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/).
 
+## [Unreleased] - ReleaseDate
+
+### Fixed
+
+- Relaxed lifetime requirements for `FdSet::{insert, remove, contains}`.
+  ([#2135](https://github.com/nix-rust/nix/pull/2135))
+
 ## [0.27.1] - 2023-08-28
 
 ### Fixed

src/sys/select.rs

@@ -41,19 +41,19 @@ impl<'fd> FdSet<'fd> {
     }
 
     /// Add a file descriptor to an `FdSet`
-    pub fn insert<Fd: AsFd>(&mut self, fd: &'fd Fd) {
+    pub fn insert<Fd: AsFd + 'fd>(&mut self, fd: Fd) {
         assert_fd_valid(fd.as_fd().as_raw_fd());
         unsafe { libc::FD_SET(fd.as_fd().as_raw_fd(), &mut self.set) };
     }
 
     /// Remove a file descriptor from an `FdSet`
-    pub fn remove<Fd: AsFd>(&mut self, fd: &'fd Fd) {
+    pub fn remove<Fd: AsFd + 'fd>(&mut self, fd: Fd) {
         assert_fd_valid(fd.as_fd().as_raw_fd());
         unsafe { libc::FD_CLR(fd.as_fd().as_raw_fd(), &mut self.set) };
     }
 
     /// Test an `FdSet` for the presence of a certain file descriptor.
-    pub fn contains<Fd: AsFd>(&self, fd: &'fd Fd) -> bool {
+    pub fn contains<Fd: AsFd + 'fd>(&self, fd: Fd) -> bool {
         assert_fd_valid(fd.as_fd().as_raw_fd());
         unsafe { libc::FD_ISSET(fd.as_fd().as_raw_fd(), &self.set) }
     }