diff --git a/.cirrus.yml b/.cirrus.yml
index ab1178dd1a..5fd77fe22e 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -5,32 +5,32 @@ cargo_cache:
 env:
   # Build by default; don't just check
   BUILD: build
+  CLIPPYFLAGS: -D warnings -A unknown-lints
   RUSTFLAGS: -D warnings
   RUSTDOCFLAGS: -D warnings
   TOOL: cargo
-  # The MSRV
-  TOOLCHAIN: 1.56.1
+  MSRV: 1.56.1
   ZFLAGS:
 
 # Tests that don't require executing the build binaries
 build: &BUILD
   build_script:
     - . $HOME/.cargo/env || true
-    - $TOOL +$TOOLCHAIN -Vv
-    - rustc +$TOOLCHAIN -Vv
-    - $TOOL +$TOOLCHAIN $BUILD $ZFLAGS --target $TARGET --all-targets
-    - $TOOL +$TOOLCHAIN doc $ZFLAGS --no-deps --target $TARGET
-    - $TOOL +$TOOLCHAIN clippy $ZFLAGS --target $TARGET --all-targets -- -D warnings
+    - $TOOL -Vv
+    - rustc -Vv
+    - $TOOL $BUILD $ZFLAGS --target $TARGET --all-targets
+    - $TOOL doc $ZFLAGS --no-deps --target $TARGET
+    - $TOOL clippy $ZFLAGS --target $TARGET --all-targets -- $CLIPPYFLAGS
     - if [ -z "$NOHACK" ]; then mkdir -p $HOME/.cargo/bin; export PATH=$HOME/.cargo/bin:$PATH; fi
     - if [ -z "$NOHACK" ]; then curl -LsSf https://github.com/taiki-e/cargo-hack/releases/latest/download/cargo-hack-${HOST:-$TARGET}.tar.gz | tar xzf - -C ~/.cargo/bin; fi
-    - if [ -z "$NOHACK" ]; then $TOOL +$TOOLCHAIN hack $ZFLAGS check --target $TARGET --each-feature; fi
+    - if [ -z "$NOHACK" ]; then $TOOL hack $ZFLAGS check --target $TARGET --each-feature; fi
 
 # Tests that do require executing the binaries
 test: &TEST
   << : *BUILD
   test_script:
     - . $HOME/.cargo/env || true
-    - $TOOL +$TOOLCHAIN test --target $TARGET
+    - $TOOL test --target $TARGET
 
 # Test FreeBSD in a full VM.  Test the i686 target too, in the
 # same VM.  The binary will be built in 32-bit mode, but will execute on a
@@ -52,10 +52,11 @@ task:
   setup_script:
     - kldload mqueuefs
     - fetch https://sh.rustup.rs -o rustup.sh
-    - sh rustup.sh -y --profile=minimal --default-toolchain $TOOLCHAIN
+    - sh rustup.sh -y --profile=minimal --default-toolchain $MSRV
     - . $HOME/.cargo/env
     - rustup target add i686-unknown-freebsd
-    - rustup component add --toolchain $TOOLCHAIN clippy
+    - rustup component add clippy
+    - cp Cargo.lock.msrv Cargo.lock
   << : *TEST
   i386_test_script:
     - . $HOME/.cargo/env
@@ -67,18 +68,19 @@ task:
     - if [ -z "$NOHACK" ]; then cargo hack check --each-feature --target i686-unknown-freebsd; fi
   before_cache_script: rm -rf $CARGO_HOME/registry/index
 
-# Test macOS x86_64 in a full VM
+# Test macOS aarch64 in a full VM
 task:
-  name: macOS x86_64
+  name: macOS aarch64
   env:
-    TARGET: x86_64-apple-darwin
-  osx_instance:
-    image: big-sur-xcode
+    TARGET: aarch64-apple-darwin
+  macos_instance:
+    image: ghcr.io/cirruslabs/macos-ventura-base:latest
   setup_script:
     - curl --proto '=https' --tlsv1.2 -sSf -o rustup.sh https://sh.rustup.rs
-    - sh rustup.sh -y --profile=minimal --default-toolchain $TOOLCHAIN
+    - sh rustup.sh -y --profile=minimal --default-toolchain $MSRV
     - . $HOME/.cargo/env
-    - rustup component add --toolchain $TOOLCHAIN clippy
+    - rustup component add clippy
+    - cp Cargo.lock.msrv Cargo.lock
   << : *TEST
   before_cache_script: rm -rf $CARGO_HOME/registry/index
 
@@ -129,9 +131,10 @@ task:
   setup_script:
     - mkdir /tmp/home
     - curl --proto '=https' --tlsv1.2 -sSf -o rustup.sh https://sh.rustup.rs
-    - sh rustup.sh -y --profile=minimal --default-toolchain $TOOLCHAIN
+    - sh rustup.sh -y --profile=minimal --default-toolchain $MSRV
     - . $HOME/.cargo/env
-    - cargo install cross --version 0.2.1 # cross 0.2.2 bumped the MSRV to 1.58.1
+    - cargo install cross --version 0.2.1 --locked # cross 0.2.2 bumped the MSRV to 1.58.1
+    - cp Cargo.lock.msrv Cargo.lock
   << : *TEST
   before_cache_script: rm -rf $CARGO_HOME/registry/index
 
@@ -142,7 +145,6 @@ task:
       arm_container:
         image: rust:1.56
       env:
-        RUSTFLAGS: --cfg graviton -D warnings
         TARGET: aarch64-unknown-linux-gnu
     - name: Linux x86_64
       container:
@@ -157,6 +159,7 @@ task:
   setup_script:
     - rustup target add $TARGET
     - rustup component add clippy
+    - cp Cargo.lock.msrv Cargo.lock
   << : *TEST
   before_cache_script: rm -rf $CARGO_HOME/registry/index
 
@@ -166,9 +169,7 @@ task:
     image: rust:latest
   env:
     TARGET: x86_64-unknown-linux-gnu
-    TOOLCHAIN:
   setup_script:
-    - rustup target add $TARGET
     - rustup component add clippy
   << : *TEST
   before_cache_script: rm -rf $CARGO_HOME/registry/index
@@ -235,46 +236,45 @@ task:
     - name: Linux x32
       env:
         TARGET: x86_64-unknown-linux-gnux32
-    - name: macOS aarch64
+    - name: macOS x86_64
       env:
-        TARGET: aarch64-apple-darwin
+        TARGET: x86_64-apple-darwin
     - name: NetBSD x86_64
       env:
         TARGET: x86_64-unknown-netbsd
   setup_script:
     - rustup target add $TARGET
-    - rustup toolchain install $TOOLCHAIN --profile minimal --target $TARGET
-    - rustup component add --toolchain $TOOLCHAIN clippy
+    - rustup component add clippy
+    - cp Cargo.lock.msrv Cargo.lock
   << : *BUILD
   before_cache_script: rm -rf $CARGO_HOME/registry/index
 
 task:
   container:
-    image: rust:1.56
+    # Redox's MSRV policy is unclear.  Until they define it, use nightly.
+    image: rustlang/rust:nightly
   env:
     BUILD: check
   name: Redox x86_64
   env:
     HOST: x86_64-unknown-linux-gnu
     TARGET: x86_64-unknown-redox
-    # Redox's MSRV policy is unclear.  Until they define it, use nightly.
-    TOOLCHAIN: nightly
+    CLIPPYFLAGS: -D warnings
   setup_script:
     - rustup target add $TARGET
-    - rustup toolchain install $TOOLCHAIN --profile minimal --target $TARGET
-    - rustup component add --toolchain $TOOLCHAIN clippy
+    - rustup component add clippy
   << : *BUILD
   before_cache_script: rm -rf $CARGO_HOME/registry/index
 
-# Rust Tier 3 targets can't use Rustup
+## Rust Tier 3 targets can't use Rustup
 task:
   container:
     image: rustlang/rust:nightly
   env:
     BUILD: check
     HOST: x86_64-unknown-linux-gnu
-    TOOLCHAIN: nightly
     ZFLAGS: -Zbuild-std
+    CLIPPYFLAGS: -D warnings
   matrix:
     - name: DragonFly BSD x86_64
       env:
@@ -300,7 +300,6 @@ task:
   name: Minver
   env:
     HOST: x86_64-unknown-linux-gnu
-    TOOLCHAIN: nightly
   container:
     image: rustlang/rust:nightly
   setup_script:
@@ -314,5 +313,5 @@ task:
   name: Rust Formatter
   container:
     image: rust:latest
-  setup_script: rustup +$TOOLCHAIN component add rustfmt
-  test_script: $TOOL +$TOOLCHAIN fmt --all -- --check **/*.rs
+  setup_script: rustup component add rustfmt
+  test_script: cargo fmt --all -- --check **/*.rs
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a332bc5f09..4bc4c0c07e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,15 +3,39 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/).
 
+## [0.26.4] - 2023-08-28
+
+### Fixed
+
+- Fixed an unintended API change in release 0.26.3, due to the upgrade of the
+  bitflags dependency.
+  ([#2117](https://github.com/nix-rust/nix/pull/2117))
+
+## [0.26.3] - 2023-08-27
+
+### Fixed
+- Fix: send `ETH_P_ALL` in htons format 
+  ([#1925](https://github.com/nix-rust/nix/pull/1925))
+- Fix: `recvmsg` now sets the length of the received `sockaddr_un` field
+  correctly on Linux platforms. ([#2041](https://github.com/nix-rust/nix/pull/2041))
+- Fix potentially invalid conversions in
+  `SockaddrIn::from<std::net::SocketAddrV4>`,
+  `SockaddrIn6::from<std::net::SockaddrV6>`, `IpMembershipRequest::new`, and
+  `Ipv6MembershipRequest::new` with future Rust versions.
+  ([#2061](https://github.com/nix-rust/nix/pull/2061))
+- Fixed an incorrect lifetime returned from `recvmsg`.
+  ([#2095](https://github.com/nix-rust/nix/pull/2095))
+
+## [0.26.2] - 2023-01-18
+### Fixed
+- Fix `SockaddrIn6` bug that was swapping flowinfo and scope_id byte ordering.
+  ([#1964](https://github.com/nix-rust/nix/pull/1964))
+
 ## [0.26.1] - 2022-11-29
-### Added
-### Changed
 ### Fixed
 - Fix UB with `sys::socket::sockopt::SockType` using `SOCK_PACKET`.
   ([#1821](https://github.com/nix-rust/nix/pull/1821))
 
-### Removed
-
 ## [0.26.0] - 2022-11-29
 ### Added
 
diff --git a/Cargo.lock.msrv b/Cargo.lock.msrv
new file mode 100644
index 0000000000..22b209aea5
--- /dev/null
+++ b/Cargo.lock.msrv
@@ -0,0 +1,491 @@
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+version = "3.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31c0432476357e58790aaa47a8efb0c5138f137343f3b5f23bd36a27e3b0a6d6"
+dependencies = [
+ "autocfg",
+ "cfg-if",
+ "fastrand",
+ "redox_syscall",
+ "rustix",
+ "windows-sys",
+]
+
+[[package]]
+name = "thiserror"
+version = "1.0.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97a802ec30afc17eee47b2855fc72e0c4cd62be9b4efe6591edde0ec5bd68d8f"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6bb623b56e39ab7dcd4b1b98bb6c8f8d907ed255b18de254088016b27a8ee19b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "301abaae475aa91687eb82514b328ab47a211a533026cb25fc3e519b86adfc3c"
+
+[[package]]
+name = "walkdir"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36df944cda56c7d8d8b7496af378e6b16de9284591917d307c9b4d313c44e698"
+dependencies = [
+ "same-file",
+ "winapi-util",
+]
+
+[[package]]
+name = "wasi"
+version = "0.11.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
diff --git a/Cargo.toml b/Cargo.toml
index cfe20d8297..ad917de06e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name        = "nix"
 description = "Rust friendly bindings to *nix APIs"
 edition     = "2018"
-version     = "0.26.1"
+version     = "0.26.4"
 rust-version = "1.56"
 authors     = ["The nix-rust Project Developers"]
 repository  = "https://github.com/nix-rust/nix"
@@ -31,7 +31,6 @@ libc = { version = "0.2.137", features = [ "extra_traits" ] }
 bitflags = "1.1"
 cfg-if = "1.0"
 pin-utils = { version = "0.1.0", optional = true }
-static_assertions = "1"
 
 [target.'cfg(not(target_os = "redox"))'.dependencies]
 memoffset = { version = "0.7", optional = true }
@@ -83,7 +82,7 @@ assert-impl = "0.1"
 lazy_static = "1.4"
 parking_lot = "0.12"
 rand = "0.8"
-tempfile = "3.3.0"
+tempfile = "3.3"
 semver = "1.0.7"
 
 [target.'cfg(any(target_os = "android", target_os = "linux"))'.dev-dependencies]
diff --git a/README.md b/README.md
index 7597ba0afc..2c42b905f7 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,7 @@ limitations. Support for platforms is split into three tiers:
 The following targets are supported by `nix`:
 
 Tier 1:
+  * aarch64-apple-darwin
   * aarch64-unknown-linux-gnu
   * arm-unknown-linux-gnueabi
   * armv7-unknown-linux-gnueabihf
@@ -58,13 +59,11 @@ Tier 1:
   * mips64el-unknown-linux-gnuabi64
   * mipsel-unknown-linux-gnu
   * powerpc64le-unknown-linux-gnu
-  * x86_64-apple-darwin
   * x86_64-unknown-freebsd
   * x86_64-unknown-linux-gnu
   * x86_64-unknown-linux-musl
 
 Tier 2:
-  * aarch64-apple-darwin
   * aarch64-apple-ios
   * aarch64-linux-android
   * arm-linux-androideabi
@@ -75,6 +74,7 @@ Tier 2:
   * s390x-unknown-linux-gnu
   * x86_64-apple-ios
   * x86_64-linux-android
+  * x86_64-apple-darwin
   * x86_64-unknown-illumos
   * x86_64-unknown-netbsd
 
diff --git a/release.toml b/release.toml
index a47a0f8271..23488fbfa5 100644
--- a/release.toml
+++ b/release.toml
@@ -1,4 +1,3 @@
-dev-version = false
 pre-release-replacements = [
 	{ file="CHANGELOG.md", search="Unreleased", replace="{{version}}" },
 	{ file="CHANGELOG.md", search="ReleaseDate", replace="{{date}}" }
diff --git a/src/dir.rs b/src/dir.rs
index 5ce503644e..ad10ce16e7 100644
--- a/src/dir.rs
+++ b/src/dir.rs
@@ -101,6 +101,9 @@ impl Drop for Dir {
     }
 }
 
+// The pass by mut is technically needless only because the inner NonNull is
+// Copy.  But philosophically we're mutating the Dir, so we pass by mut.
+#[allow(clippy::needless_pass_by_ref_mut)]
 fn next(dir: &mut Dir) -> Option<Result<Entry>> {
     unsafe {
         // Note: POSIX specifies that portable applications should dynamically allocate a
diff --git a/src/fcntl.rs b/src/fcntl.rs
index 650828345b..e227e7c0c7 100644
--- a/src/fcntl.rs
+++ b/src/fcntl.rs
@@ -638,7 +638,7 @@ pub fn vmsplice(
 }
 }
 
-#[cfg(any(target_os = "linux"))]
+#[cfg(target_os = "linux")]
 #[cfg(feature = "fs")]
 libc_bitflags!(
     /// Mode argument flags for fallocate determining operation performed on a given range.
@@ -678,7 +678,7 @@ feature! {
 ///
 /// Allows the caller to directly manipulate the allocated disk space for the
 /// file referred to by fd.
-#[cfg(any(target_os = "linux"))]
+#[cfg(target_os = "linux")]
 #[cfg(feature = "fs")]
 pub fn fallocate(
     fd: RawFd,
diff --git a/src/lib.rs b/src/lib.rs
index 6b82125761..c0cfbd0110 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -54,6 +54,7 @@
 #![warn(missing_docs)]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #![deny(clippy::cast_ptr_alignment)]
+#![allow(clippy::bad_bit_mask)]
 
 // Re-exported external crates
 pub use libc;
diff --git a/src/mount/bsd.rs b/src/mount/bsd.rs
index d124f1f9ab..771be7f436 100644
--- a/src/mount/bsd.rs
+++ b/src/mount/bsd.rs
@@ -391,7 +391,7 @@ impl<'a> Nmount<'a> {
         });
 
         let niov = self.iov.len() as c_uint;
-        let iovp = self.iov.as_mut_ptr() as *mut libc::iovec;
+        let iovp = self.iov.as_mut_ptr();
         let res = unsafe { libc::nmount(iovp, niov, flags.bits) };
         match Errno::result(res) {
             Ok(_) => Ok(()),
diff --git a/src/sys/event.rs b/src/sys/event.rs
index d8ad628ea2..2cbb28d602 100644
--- a/src/sys/event.rs
+++ b/src/sys/event.rs
@@ -26,7 +26,7 @@ pub struct KEvent {
     target_os = "openbsd"
 ))]
 type type_of_udata = *mut libc::c_void;
-#[cfg(any(target_os = "netbsd"))]
+#[cfg(target_os = "netbsd")]
 type type_of_udata = intptr_t;
 
 #[cfg(target_os = "netbsd")]
@@ -87,7 +87,7 @@ libc_enum! {
     target_os = "openbsd"
 ))]
 pub type type_of_event_flag = u16;
-#[cfg(any(target_os = "netbsd"))]
+#[cfg(target_os = "netbsd")]
 pub type type_of_event_flag = u32;
 libc_bitflags! {
     pub struct EventFlag: type_of_event_flag {
diff --git a/src/sys/ioctl/mod.rs b/src/sys/ioctl/mod.rs
index 98d6b5c99d..0b3fe3e769 100644
--- a/src/sys/ioctl/mod.rs
+++ b/src/sys/ioctl/mod.rs
@@ -712,7 +712,7 @@ macro_rules! ioctl_read_buf {
         pub unsafe fn $name(fd: $crate::libc::c_int,
                             data: &mut [$ty])
                             -> $crate::Result<$crate::libc::c_int> {
-            convert_ioctl_res!($crate::libc::ioctl(fd, request_code_read!($ioty, $nr, data.len() * ::std::mem::size_of::<$ty>()) as $crate::sys::ioctl::ioctl_num_type, data))
+            convert_ioctl_res!($crate::libc::ioctl(fd, request_code_read!($ioty, $nr, ::std::mem::size_of_val(data)) as $crate::sys::ioctl::ioctl_num_type, data))
         }
     )
 }
@@ -751,7 +751,7 @@ macro_rules! ioctl_write_buf {
         pub unsafe fn $name(fd: $crate::libc::c_int,
                             data: &[$ty])
                             -> $crate::Result<$crate::libc::c_int> {
-            convert_ioctl_res!($crate::libc::ioctl(fd, request_code_write!($ioty, $nr, data.len() * ::std::mem::size_of::<$ty>()) as $crate::sys::ioctl::ioctl_num_type, data))
+            convert_ioctl_res!($crate::libc::ioctl(fd, request_code_write!($ioty, $nr, ::std::mem::size_of_val(data)) as $crate::sys::ioctl::ioctl_num_type, data))
         }
     )
 }
@@ -780,7 +780,7 @@ macro_rules! ioctl_readwrite_buf {
         pub unsafe fn $name(fd: $crate::libc::c_int,
                             data: &mut [$ty])
                             -> $crate::Result<$crate::libc::c_int> {
-            convert_ioctl_res!($crate::libc::ioctl(fd, request_code_readwrite!($ioty, $nr, data.len() * ::std::mem::size_of::<$ty>()) as $crate::sys::ioctl::ioctl_num_type, data))
+            convert_ioctl_res!($crate::libc::ioctl(fd, request_code_readwrite!($ioty, $nr, ::std::mem::size_of_val(data)) as $crate::sys::ioctl::ioctl_num_type, data))
         }
     )
 }
diff --git a/src/sys/personality.rs b/src/sys/personality.rs
index f295a05fad..30231dd7b8 100644
--- a/src/sys/personality.rs
+++ b/src/sys/personality.rs
@@ -80,7 +80,10 @@ pub fn get() -> Result<Persona> {
 ///
 /// Example:
 ///
-/// ```
+// Disable test on aarch64 until we know why it fails.
+// https://github.com/nix-rust/nix/issues/2060
+#[cfg_attr(target_arch = "aarch64", doc = " ```no_run")]
+#[cfg_attr(not(target_arch = "aarch64"), doc = " ```")]
 /// # use nix::sys::personality::{self, Persona};
 /// let mut pers = personality::get().unwrap();
 /// assert!(!pers.contains(Persona::ADDR_NO_RANDOMIZE));
diff --git a/src/sys/ptrace/mod.rs b/src/sys/ptrace/mod.rs
index 2b121c0b4d..88648acabc 100644
--- a/src/sys/ptrace/mod.rs
+++ b/src/sys/ptrace/mod.rs
@@ -1,4 +1,4 @@
-///! Provides helpers for making ptrace system calls
+//! Provides helpers for making ptrace system calls
 
 #[cfg(any(target_os = "android", target_os = "linux"))]
 mod linux;
diff --git a/src/sys/socket/addr.rs b/src/sys/socket/addr.rs
index 8b23b10cf0..2f30bff464 100644
--- a/src/sys/socket/addr.rs
+++ b/src/sys/socket/addr.rs
@@ -41,21 +41,16 @@ use std::{fmt, mem, net, ptr, slice};
 /// Convert a std::net::Ipv4Addr into the libc form.
 #[cfg(feature = "net")]
 pub(crate) const fn ipv4addr_to_libc(addr: net::Ipv4Addr) -> libc::in_addr {
-    static_assertions::assert_eq_size!(net::Ipv4Addr, libc::in_addr);
-    // Safe because both types have the same memory layout, and no fancy Drop
-    // impls.
-    unsafe {
-        mem::transmute(addr)
+    libc::in_addr {
+        s_addr: u32::from_ne_bytes(addr.octets())
     }
 }
 
 /// Convert a std::net::Ipv6Addr into the libc form.
 #[cfg(feature = "net")]
 pub(crate) const fn ipv6addr_to_libc(addr: &net::Ipv6Addr) -> libc::in6_addr {
-    static_assertions::assert_eq_size!(net::Ipv6Addr, libc::in6_addr);
-    // Safe because both are Newtype wrappers around the same libc type
-    unsafe {
-        mem::transmute(*addr)
+    libc::in6_addr {
+        s6_addr: addr.octets()
     }
 }
 
@@ -775,6 +770,7 @@ enum UnixAddrKind<'a> {
 }
 impl<'a> UnixAddrKind<'a> {
     /// Safety: sun & sun_len must be valid
+    #[allow(clippy::unnecessary_cast)]   // Not unnecessary on all platforms
     unsafe fn get(sun: &'a libc::sockaddr_un, sun_len: u8) -> Self {
         assert!(sun_len as usize >= offset_of!(libc::sockaddr_un, sun_path));
         let path_len =
@@ -811,6 +807,7 @@ impl<'a> UnixAddrKind<'a> {
 
 impl UnixAddr {
     /// Create a new sockaddr_un representing a filesystem path.
+    #[allow(clippy::unnecessary_cast)]   // Not unnecessary on all platforms
     pub fn new<P: ?Sized + NixPath>(path: &P) -> Result<UnixAddr> {
         path.with_nix_path(|cstr| unsafe {
             let mut ret = libc::sockaddr_un {
@@ -858,6 +855,7 @@ impl UnixAddr {
     /// processes to communicate with processes having a different filesystem view.
     #[cfg(any(target_os = "android", target_os = "linux"))]
     #[cfg_attr(docsrs, doc(cfg(all())))]
+    #[allow(clippy::unnecessary_cast)]   // Not unnecessary on all platforms
     pub fn new_abstract(path: &[u8]) -> Result<UnixAddr> {
         unsafe {
             let mut ret = libc::sockaddr_un {
@@ -1049,6 +1047,22 @@ impl SockaddrLike for UnixAddr {
     {
         mem::size_of::<libc::sockaddr_un>() as libc::socklen_t
     }
+
+    unsafe fn set_length(&mut self, new_length: usize) -> std::result::Result<(), SocketAddressLengthNotDynamic> {
+        // `new_length` is only used on some platforms, so it must be provided even when not used
+        #![allow(unused_variables)]
+        cfg_if! {
+            if #[cfg(any(target_os = "android",
+                         target_os = "fuchsia",
+                         target_os = "illumos",
+                         target_os = "linux",
+                         target_os = "redox",
+                ))] {
+                self.sun_len = new_length as u8;
+            }
+        };
+        Ok(())
+    }
 }
 
 impl AsRef<libc::sockaddr_un> for UnixAddr {
@@ -1198,7 +1212,32 @@ pub trait SockaddrLike: private::SockaddrLikePriv {
     {
         mem::size_of::<Self>() as libc::socklen_t
     }
+
+    /// Set the length of this socket address
+    ///
+    /// This method may only be called on socket addresses whose lengths are dynamic, and it
+    /// returns an error if called on a type whose length is static.
+    ///
+    /// # Safety
+    ///
+    /// `new_length` must be a valid length for this type of address. Specifically, reads of that
+    /// length from `self` must be valid.
+    #[doc(hidden)]
+    unsafe fn set_length(&mut self, _new_length: usize) -> std::result::Result<(), SocketAddressLengthNotDynamic> {
+        Err(SocketAddressLengthNotDynamic)
+    }
+}
+
+/// The error returned by [`SockaddrLike::set_length`] on an address whose length is statically
+/// fixed.
+#[derive(Copy, Clone, Debug)]
+pub struct SocketAddressLengthNotDynamic;
+impl fmt::Display for SocketAddressLengthNotDynamic {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str("Attempted to set length on socket whose length is statically fixed")
+    }
 }
+impl std::error::Error for SocketAddressLengthNotDynamic {}
 
 impl private::SockaddrLikePriv for () {
     fn as_mut_ptr(&mut self) -> *mut libc::sockaddr {
@@ -1235,9 +1274,6 @@ impl SockaddrLike for () {
 }
 
 /// An IPv4 socket address
-// This is identical to net::SocketAddrV4.  But the standard library
-// doesn't allow direct access to the libc fields, which we need.  So we
-// reimplement it here.
 #[cfg(feature = "net")]
 #[repr(transparent)]
 #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
@@ -1476,8 +1512,8 @@ impl From<SockaddrIn6> for net::SocketAddrV6 {
         net::SocketAddrV6::new(
             net::Ipv6Addr::from(addr.0.sin6_addr.s6_addr),
             u16::from_be(addr.0.sin6_port),
-            u32::from_be(addr.0.sin6_flowinfo),
-            u32::from_be(addr.0.sin6_scope_id),
+            addr.0.sin6_flowinfo,
+            addr.0.sin6_scope_id,
         )
     }
 }
@@ -1645,6 +1681,15 @@ impl SockaddrLike for SockaddrStorage {
             None => mem::size_of_val(self) as libc::socklen_t
         }
     }
+
+    unsafe fn set_length(&mut self, new_length: usize) -> std::result::Result<(), SocketAddressLengthNotDynamic> {
+        match self.as_unix_addr_mut() {
+            Some(addr) => {
+                addr.set_length(new_length)
+            },
+            None => Err(SocketAddressLengthNotDynamic),
+        }
+    }
 }
 
 macro_rules! accessors {
@@ -1961,7 +2006,7 @@ impl PartialEq for SockaddrStorage {
     }
 }
 
-mod private {
+pub(super) mod private {
     pub trait SockaddrLikePriv {
         /// Returns a mutable raw pointer to the inner structure.
         ///
@@ -2850,7 +2895,6 @@ mod datalink {
             &self.0
         }
     }
-
     }
 }
 
@@ -3167,6 +3211,18 @@ mod tests {
                 SockaddrIn6::size() as usize
             );
         }
+
+        #[test]
+        // Ensure that we can convert to-and-from std::net variants without change.
+        fn to_and_from() {
+            let s = "[1234:5678:90ab:cdef::1111:2222]:8080";
+            let mut nix_sin6 = SockaddrIn6::from_str(s).unwrap();
+            nix_sin6.0.sin6_flowinfo = 0x12345678;
+            nix_sin6.0.sin6_scope_id = 0x9abcdef0;
+
+            let std_sin6 : std::net::SocketAddrV6 = nix_sin6.into();
+            assert_eq!(nix_sin6, std_sin6.into());
+        }
     }
 
     mod sockaddr_storage {
diff --git a/src/sys/socket/mod.rs b/src/sys/socket/mod.rs
index 2d7159a63a..956c8da1ff 100644
--- a/src/sys/socket/mod.rs
+++ b/src/sys/socket/mod.rs
@@ -226,10 +226,10 @@ pub enum SockProtocol {
     // The protocol number is fed into the socket syscall in network byte order.
     #[cfg(any(target_os = "android", target_os = "linux"))]
     #[cfg_attr(docsrs, doc(cfg(all())))]
-    EthAll = libc::ETH_P_ALL.to_be(),
+    EthAll = (libc::ETH_P_ALL as u16).to_be() as i32,
 }
 
-#[cfg(any(target_os = "linux"))]
+#[cfg(target_os = "linux")]
 libc_bitflags! {
     /// Configuration flags for `SO_TIMESTAMPING` interface
     ///
@@ -1298,7 +1298,7 @@ impl<'a> ControlMessage<'a> {
             }
             #[cfg(any(target_os = "android", target_os = "linux"))]
             ControlMessage::AlgSetIv(iv) => {
-                mem::size_of_val(&iv) + iv.len()
+                mem::size_of::<&[u8]>() + iv.len()
             },
             #[cfg(any(target_os = "android", target_os = "linux"))]
             ControlMessage::AlgSetOp(op) => {
@@ -1535,7 +1535,7 @@ pub fn sendmmsg<'a, XS, AS, C, I, S>(
 
 
     for (i, ((slice, addr), mmsghdr)) in slices.into_iter().zip(addrs.as_ref()).zip(data.items.iter_mut() ).enumerate() {
-        let mut p = &mut mmsghdr.msg_hdr;
+        let p = &mut mmsghdr.msg_hdr;
         p.msg_iov = slice.as_ref().as_ptr() as *mut libc::iovec;
         p.msg_iovlen = slice.as_ref().len() as _;
 
@@ -1611,24 +1611,24 @@ impl<S> MultiHeaders<S> {
     {
         // we will be storing pointers to addresses inside mhdr - convert it into boxed
         // slice so it can'be changed later by pushing anything into self.addresses
-        let mut addresses = vec![std::mem::MaybeUninit::uninit(); num_slices].into_boxed_slice();
+        let mut addresses = vec![std::mem::MaybeUninit::<S>::uninit(); num_slices].into_boxed_slice();
 
         let msg_controllen = cmsg_buffer.as_ref().map_or(0, |v| v.capacity());
 
         // we'll need a cmsg_buffer for each slice, we preallocate a vector and split
         // it into "slices" parts
-        let cmsg_buffers =
+        let mut cmsg_buffers =
             cmsg_buffer.map(|v| vec![0u8; v.capacity() * num_slices].into_boxed_slice());
 
         let items = addresses
             .iter_mut()
             .enumerate()
             .map(|(ix, address)| {
-                let (ptr, cap) = match &cmsg_buffers {
-                    Some(v) => ((&v[ix * msg_controllen] as *const u8), msg_controllen),
-                    None => (std::ptr::null(), 0),
+                let (ptr, cap) = match &mut cmsg_buffers {
+                    Some(v) => ((&mut v[ix * msg_controllen] as *mut u8), msg_controllen),
+                    None => (std::ptr::null_mut(), 0),
                 };
-                let msg_hdr = unsafe { pack_mhdr_to_receive(std::ptr::null(), 0, ptr, cap, address.as_mut_ptr()) };
+                let msg_hdr = unsafe { pack_mhdr_to_receive(std::ptr::null_mut(), 0, ptr, cap, address.as_mut_ptr()) };
                 libc::mmsghdr {
                     msg_hdr,
                     msg_len: 0,
@@ -1689,7 +1689,7 @@ where
 {
     let mut count = 0;
     for (i, (slice, mmsghdr)) in slices.into_iter().zip(data.items.iter_mut()).enumerate() {
-        let mut p = &mut mmsghdr.msg_hdr;
+        let p = &mut mmsghdr.msg_hdr;
         p.msg_iov = slice.as_ref().as_ptr() as *mut libc::iovec;
         p.msg_iovlen = slice.as_ref().len() as _;
         count = i + 1;
@@ -1916,7 +1916,7 @@ unsafe fn read_mhdr<'a, 'i, S>(
     mhdr: msghdr,
     r: isize,
     msg_controllen: usize,
-    address: S,
+    mut address: S,
 ) -> RecvMsg<'a, 'i, S>
     where S: SockaddrLike
 {
@@ -1932,6 +1932,11 @@ unsafe fn read_mhdr<'a, 'i, S>(
         }.as_ref()
     };
 
+    // Ignore errors if this socket address has statically-known length
+    //
+    // This is to ensure that unix socket addresses have their length set appropriately.
+    let _ = address.set_length(mhdr.msg_namelen as usize);
+
     RecvMsg {
         bytes: r as usize,
         cmsghdr,
@@ -1954,9 +1959,9 @@ unsafe fn read_mhdr<'a, 'i, S>(
 ///
 /// Buffers must remain valid for the whole lifetime of msghdr
 unsafe fn pack_mhdr_to_receive<S>(
-    iov_buffer: *const IoSliceMut,
+    iov_buffer: *mut IoSliceMut,
     iov_buffer_len: usize,
-    cmsg_buffer: *const u8,
+    cmsg_buffer: *mut u8,
     cmsg_capacity: usize,
     address: *mut S,
 ) -> msghdr
@@ -1967,7 +1972,7 @@ unsafe fn pack_mhdr_to_receive<S>(
     // initialize it.
     let mut mhdr = mem::MaybeUninit::<msghdr>::zeroed();
     let p = mhdr.as_mut_ptr();
-    (*p).msg_name = (*address).as_mut_ptr() as *mut c_void;
+    (*p).msg_name = address as *mut c_void;
     (*p).msg_namelen = S::size();
     (*p).msg_iov = iov_buffer as *mut iovec;
     (*p).msg_iovlen = iov_buffer_len as _;
@@ -1992,7 +1997,7 @@ fn pack_mhdr_to_send<'a, I, C, S>(
 
     // The message header must be initialized before the individual cmsgs.
     let cmsg_ptr = if capacity > 0 {
-        cmsg_buffer.as_ptr() as *mut c_void
+        cmsg_buffer.as_mut_ptr() as *mut c_void
     } else {
         ptr::null_mut()
     };
@@ -2046,7 +2051,7 @@ fn pack_mhdr_to_send<'a, I, C, S>(
 /// [recvmsg(2)](https://pubs.opengroup.org/onlinepubs/9699919799/functions/recvmsg.html)
 pub fn recvmsg<'a, 'outer, 'inner, S>(fd: RawFd, iov: &'outer mut [IoSliceMut<'inner>],
                    mut cmsg_buffer: Option<&'a mut Vec<u8>>,
-                   flags: MsgFlags) -> Result<RecvMsg<'a, 'inner, S>>
+                   flags: MsgFlags) -> Result<RecvMsg<'a, 'outer, S>>
     where S: SockaddrLike + 'a,
     'inner: 'outer
 {
@@ -2056,7 +2061,7 @@ pub fn recvmsg<'a, 'outer, 'inner, S>(fd: RawFd, iov: &'outer mut [IoSliceMut<'i
         .map(|v| (v.as_mut_ptr(), v.capacity()))
         .unwrap_or((ptr::null_mut(), 0));
     let mut mhdr = unsafe {
-        pack_mhdr_to_receive(iov.as_ref().as_ptr(), iov.len(), msg_control, msg_controllen, address.as_mut_ptr())
+        pack_mhdr_to_receive(iov.as_mut().as_mut_ptr(), iov.len(), msg_control, msg_controllen, address.as_mut_ptr())
     };
 
     let ret = unsafe { libc::recvmsg(fd, &mut mhdr, flags.bits()) };
@@ -2202,7 +2207,7 @@ pub fn recv(sockfd: RawFd, buf: &mut [u8], flags: MsgFlags) -> Result<usize> {
     unsafe {
         let ret = libc::recv(
             sockfd,
-            buf.as_ptr() as *mut c_void,
+            buf.as_mut_ptr() as *mut c_void,
             buf.len() as size_t,
             flags.bits(),
         );
@@ -2226,7 +2231,7 @@ pub fn recvfrom<T: SockaddrLike>(
 
         let ret = Errno::result(libc::recvfrom(
             sockfd,
-            buf.as_ptr() as *mut c_void,
+            buf.as_mut_ptr() as *mut c_void,
             buf.len() as size_t,
             0,
             addr.as_mut_ptr() as *mut libc::sockaddr,
@@ -2236,7 +2241,7 @@ pub fn recvfrom<T: SockaddrLike>(
         Ok((
             ret,
             T::from_raw(
-                addr.assume_init().as_ptr() as *const libc::sockaddr,
+                addr.assume_init().as_ptr(),
                 Some(len),
             ),
         ))
diff --git a/src/sys/socket/sockopt.rs b/src/sys/socket/sockopt.rs
index 06e9ee4563..2658deae74 100644
--- a/src/sys/socket/sockopt.rs
+++ b/src/sys/socket/sockopt.rs
@@ -678,7 +678,7 @@ sockopt_impl!(
     libc::IP6T_SO_ORIGINAL_DST,
     libc::sockaddr_in6
 );
-#[cfg(any(target_os = "linux"))]
+#[cfg(target_os = "linux")]
 sockopt_impl!(
     /// Specifies exact type of timestamping information collected by the kernel
     /// [Further reading](https://www.kernel.org/doc/html/latest/networking/timestamping.html)
@@ -697,7 +697,7 @@ sockopt_impl!(
     libc::SO_TIMESTAMP,
     bool
 );
-#[cfg(all(target_os = "linux"))]
+#[cfg(target_os = "linux")]
 sockopt_impl!(
     /// Enable or disable the receiving of the `SO_TIMESTAMPNS` control message.
     ReceiveTimestampns,
diff --git a/src/sys/uio.rs b/src/sys/uio.rs
index b31c3068a7..c96ade37ff 100644
--- a/src/sys/uio.rs
+++ b/src/sys/uio.rs
@@ -28,6 +28,9 @@ pub fn writev(fd: RawFd, iov: &[IoSlice<'_>]) -> Result<usize> {
 /// Low-level vectored read from a raw file descriptor
 ///
 /// See also [readv(2)](https://pubs.opengroup.org/onlinepubs/9699919799/functions/readv.html)
+// Clippy doesn't know that we need to pass iov mutably only because the
+// mutation happens after converting iov to a pointer
+#[allow(clippy::needless_pass_by_ref_mut)]
 pub fn readv(fd: RawFd, iov: &mut [IoSliceMut<'_>]) -> Result<usize> {
     // SAFETY: same as in writev(), IoSliceMut is ABI-compatible with iovec
     let res = unsafe {
@@ -71,6 +74,9 @@ pub fn pwritev(fd: RawFd, iov: &[IoSlice<'_>], offset: off_t) -> Result<usize> {
 /// See also: [`readv`](fn.readv.html) and [`pread`](fn.pread.html)
 #[cfg(not(any(target_os = "redox", target_os = "haiku")))]
 #[cfg_attr(docsrs, doc(cfg(all())))]
+// Clippy doesn't know that we need to pass iov mutably only because the
+// mutation happens after converting iov to a pointer
+#[allow(clippy::needless_pass_by_ref_mut)]
 pub fn preadv(
     fd: RawFd,
     iov: &mut [IoSliceMut<'_>],
@@ -201,7 +207,7 @@ impl<'a> IoVec<&'a mut [u8]> {
     pub fn from_mut_slice(buf: &'a mut [u8]) -> IoVec<&'a mut [u8]> {
         IoVec(
             libc::iovec {
-                iov_base: buf.as_ptr() as *mut c_void,
+                iov_base: buf.as_mut_ptr() as *mut c_void,
                 iov_len: buf.len() as size_t,
             },
             PhantomData,
diff --git a/test/sys/test_aio.rs b/test/sys/test_aio.rs
index 84086f80ce..d9e2e08500 100644
--- a/test/sys/test_aio.rs
+++ b/test/sys/test_aio.rs
@@ -200,7 +200,7 @@ mod aio_read {
             assert_eq!(err, Ok(()));
             assert_eq!(aior.as_mut().aio_return().unwrap(), EXPECT.len());
         }
-        assert_eq!(EXPECT, rbuf.deref().deref());
+        assert_eq!(EXPECT, rbuf.deref());
     }
 
     // Like ok, but allocates the structure on the stack.
@@ -223,7 +223,7 @@ mod aio_read {
             assert_eq!(err, Ok(()));
             assert_eq!(aior.as_mut().aio_return().unwrap(), EXPECT.len());
         }
-        assert_eq!(EXPECT, rbuf.deref().deref());
+        assert_eq!(EXPECT, rbuf.deref());
     }
 }
 
diff --git a/test/sys/test_socket.rs b/test/sys/test_socket.rs
index 5adc77ed6b..158b745a03 100644
--- a/test/sys/test_socket.rs
+++ b/test/sys/test_socket.rs
@@ -68,7 +68,7 @@ pub fn test_inetv4_addr_roundtrip_sockaddr_storage_to_addr() {
     assert_eq!(from_storage, sockaddr);
 }
 
-#[cfg(any(target_os = "linux"))]
+#[cfg(target_os = "linux")]
 #[cfg_attr(qemu, ignore)]
 #[test]
 pub fn test_timestamping() {
@@ -298,6 +298,45 @@ pub fn test_socketpair() {
     assert_eq!(&buf[..], b"hello");
 }
 
+#[test]
+pub fn test_recvmsg_sockaddr_un() {
+    use nix::sys::socket::{
+        self, bind, socket, AddressFamily, MsgFlags, SockFlag, SockType,
+    };
+
+    let tempdir = tempfile::tempdir().unwrap();
+    let sockname = tempdir.path().join("sock");
+    let sock = socket(
+        AddressFamily::Unix,
+        SockType::Datagram,
+        SockFlag::empty(),
+        None,
+    )
+    .expect("socket failed");
+    let sockaddr = UnixAddr::new(&sockname).unwrap();
+    bind(sock, &sockaddr).expect("bind failed");
+
+    // Send a message
+    let send_buffer = "hello".as_bytes();
+    if let Err(e) = socket::sendmsg(
+        sock,
+        &[std::io::IoSlice::new(send_buffer)],
+        &[],
+        MsgFlags::empty(),
+        Some(&sockaddr),
+    ) {
+        crate::skip!("Couldn't send ({:?}), so skipping test", e);
+    }
+
+    // Receive the message
+    let mut recv_buffer = [0u8; 32];
+    let mut iov = [std::io::IoSliceMut::new(&mut recv_buffer)];
+    let received =
+        socket::recvmsg(sock, &mut iov, None, MsgFlags::empty()).unwrap();
+    // Check the address in the received message
+    assert_eq!(sockaddr, received.address.unwrap());
+}
+
 #[test]
 pub fn test_std_conversions() {
     use nix::sys::socket::*;
@@ -2136,63 +2175,50 @@ pub fn test_recv_ipv6pktinfo() {
 }
 
 #[cfg(any(target_os = "android", target_os = "linux"))]
-#[cfg_attr(graviton, ignore = "Not supported by the CI environment")]
 #[test]
 pub fn test_vsock() {
-    use nix::errno::Errno;
-    use nix::sys::socket::{
-        bind, connect, listen, socket, AddressFamily, SockFlag, SockType,
-        VsockAddr,
-    };
-    use nix::unistd::close;
-    use std::thread;
+    use nix::sys::socket::SockaddrLike;
+    use nix::sys::socket::{AddressFamily, VsockAddr};
+    use std::convert::TryInto;
+    use std::mem;
 
     let port: u32 = 3000;
 
-    let s1 = socket(
-        AddressFamily::Vsock,
-        SockType::Stream,
-        SockFlag::empty(),
-        None,
-    )
-    .expect("socket failed");
+    let addr_local = VsockAddr::new(libc::VMADDR_CID_LOCAL, port);
+    assert_eq!(addr_local.cid(), libc::VMADDR_CID_LOCAL);
+    assert_eq!(addr_local.port(), port);
 
-    // VMADDR_CID_HYPERVISOR is reserved, so we expect an EADDRNOTAVAIL error.
-    let sockaddr_hv = VsockAddr::new(libc::VMADDR_CID_HYPERVISOR, port);
-    assert_eq!(bind(s1, &sockaddr_hv).err(), Some(Errno::EADDRNOTAVAIL));
+    let addr_any = VsockAddr::new(libc::VMADDR_CID_ANY, libc::VMADDR_PORT_ANY);
+    assert_eq!(addr_any.cid(), libc::VMADDR_CID_ANY);
+    assert_eq!(addr_any.port(), libc::VMADDR_PORT_ANY);
 
-    let sockaddr_any = VsockAddr::new(libc::VMADDR_CID_ANY, port);
-    assert_eq!(bind(s1, &sockaddr_any), Ok(()));
-    listen(s1, 10).expect("listen failed");
+    assert_ne!(addr_local, addr_any);
+    assert_ne!(calculate_hash(&addr_local), calculate_hash(&addr_any));
 
-    let thr = thread::spawn(move || {
-        let cid: u32 = libc::VMADDR_CID_HOST;
+    let addr1 = VsockAddr::new(libc::VMADDR_CID_HOST, port);
+    let addr2 = VsockAddr::new(libc::VMADDR_CID_HOST, port);
+    assert_eq!(addr1, addr2);
+    assert_eq!(calculate_hash(&addr1), calculate_hash(&addr2));
 
-        let s2 = socket(
-            AddressFamily::Vsock,
-            SockType::Stream,
-            SockFlag::empty(),
-            None,
+    let addr3 = unsafe {
+        VsockAddr::from_raw(
+            addr2.as_ref() as *const libc::sockaddr_vm as *const libc::sockaddr,
+            Some(mem::size_of::<libc::sockaddr_vm>().try_into().unwrap()),
         )
-        .expect("socket failed");
-
-        let sockaddr_host = VsockAddr::new(cid, port);
-
-        // The current implementation does not support loopback devices, so,
-        // for now, we expect a failure on the connect.
-        assert_ne!(connect(s2, &sockaddr_host), Ok(()));
-
-        close(s2).unwrap();
-    });
-
-    close(s1).unwrap();
-    thr.join().unwrap();
+    }
+    .unwrap();
+    assert_eq!(
+        addr3.as_ref().svm_family,
+        AddressFamily::Vsock as libc::sa_family_t
+    );
+    assert_eq!(addr3.as_ref().svm_cid, addr1.cid());
+    assert_eq!(addr3.as_ref().svm_port, addr1.port());
 }
 
 // Disable the test on emulated platforms because it fails in Cirrus-CI.  Lack
 // of QEMU support is suspected.
 #[cfg_attr(qemu, ignore)]
-#[cfg(all(target_os = "linux"))]
+#[cfg(target_os = "linux")]
 #[test]
 fn test_recvmsg_timestampns() {
     use nix::sys::socket::*;
@@ -2247,7 +2273,7 @@ fn test_recvmsg_timestampns() {
 // Disable the test on emulated platforms because it fails in Cirrus-CI.  Lack
 // of QEMU support is suspected.
 #[cfg_attr(qemu, ignore)]
-#[cfg(all(target_os = "linux"))]
+#[cfg(target_os = "linux")]
 #[test]
 fn test_recvmmsg_timestampns() {
     use nix::sys::socket::*;
diff --git a/test/test_fcntl.rs b/test/test_fcntl.rs
index e51044a069..0d285a87ad 100644
--- a/test/test_fcntl.rs
+++ b/test/test_fcntl.rs
@@ -238,7 +238,7 @@ mod linux_android {
     use nix::unistd::{close, pipe, read, write};
 
     use tempfile::tempfile;
-    #[cfg(any(target_os = "linux"))]
+    #[cfg(target_os = "linux")]
     use tempfile::NamedTempFile;
 
     use crate::*;
@@ -340,7 +340,7 @@ mod linux_android {
 
         let buf1 = b"abcdef";
         let buf2 = b"defghi";
-        let iovecs = vec![IoSlice::new(&buf1[0..3]), IoSlice::new(&buf2[0..3])];
+        let iovecs = [IoSlice::new(&buf1[0..3]), IoSlice::new(&buf2[0..3])];
 
         let res = vmsplice(wr, &iovecs[..], SpliceFFlags::empty()).unwrap();
 
@@ -355,7 +355,7 @@ mod linux_android {
         close(wr).unwrap();
     }
 
-    #[cfg(any(target_os = "linux"))]
+    #[cfg(target_os = "linux")]
     #[test]
     fn test_fallocate() {
         let tmp = NamedTempFile::new().unwrap();
diff --git a/test/test_sendfile.rs b/test/test_sendfile.rs
index f73a3b56c3..f442a0cab0 100644
--- a/test/test_sendfile.rs
+++ b/test/test_sendfile.rs
@@ -63,10 +63,10 @@ fn test_sendfile64_linux() {
 fn test_sendfile_freebsd() {
     // Declare the content
     let header_strings =
-        vec!["HTTP/1.1 200 OK\n", "Content-Type: text/plain\n", "\n"];
+        ["HTTP/1.1 200 OK\n", "Content-Type: text/plain\n", "\n"];
     let body = "Xabcdef123456";
     let body_offset = 1;
-    let trailer_strings = vec!["\n", "Served by Make Believe\n"];
+    let trailer_strings = ["\n", "Served by Make Believe\n"];
 
     // Write the body to a file
     let mut tmp = tempfile().unwrap();
@@ -114,10 +114,10 @@ fn test_sendfile_freebsd() {
 fn test_sendfile_dragonfly() {
     // Declare the content
     let header_strings =
-        vec!["HTTP/1.1 200 OK\n", "Content-Type: text/plain\n", "\n"];
+        ["HTTP/1.1 200 OK\n", "Content-Type: text/plain\n", "\n"];
     let body = "Xabcdef123456";
     let body_offset = 1;
-    let trailer_strings = vec!["\n", "Served by Make Believe\n"];
+    let trailer_strings = ["\n", "Served by Make Believe\n"];
 
     // Write the body to a file
     let mut tmp = tempfile().unwrap();