chore(deps): bump nix from 0.29.0 to 0.31.3 (#129)

Bumps [nix](https://github.com/nix-rust/nix) from 0.29.0 to 0.31.3.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/nix-rust/nix/blob/master/CHANGELOG.md">nix's
changelog</a>.</em></p>
<blockquote>
<h2>[0.31.3] - 2026-05-11</h2>
<h3>Added</h3>
<ul>
<li>Enable module <code>ioctl</code> for Cygwin
(<a
href="https://redirect.github.com/nix-rust/nix/pull/2715">#2715</a>)</li>
<li>Add

<code>CLOCK_BOOTTIME/CLOCK_PROCESS_CPUTIME_ID/CLOCK_THREAD_CPUTIME_ID/CLOCK_UPTIME</code>
to NetBSD-like platforms (<a
href="https://redirect.github.com/nix-rust/nix/pull/2716">#2716</a>)</li>
<li>unistd: add mkfifo for redox
(<a
href="https://redirect.github.com/nix-rust/nix/pull/2749">#2749</a>)</li>
<li>Added <code>kevent64</code> support on apple targets:
<code>Kqueue::kevent64</code>, <code>KEvent64</code>,
and <code>Kevent64Flags</code>. (<a
href="https://redirect.github.com/nix-rust/nix/pull/2781">#2781</a>)</li>
</ul>
<h3>Fixed</h3>
<ul>
<li>fix SaFlags_t definition on redox
(<a
href="https://redirect.github.com/nix-rust/nix/pull/2751">#2751</a>)</li>
<li>Fixed <code>EpollEvent::events()</code> to use
<code>from_bits_retain</code> instead of
<code>from_bits().unwrap()</code>, preventing panics when the kernel
returns
unknown epoll flags. (<a
href="https://redirect.github.com/nix-rust/nix/pull/2783">#2783</a>)</li>
<li>Fixed <code>KEvent::flags()</code> and <code>KEvent::fflags()</code>
to use <code>from_bits_retain</code>
instead of <code>from_bits().unwrap()</code>, preventing panics when the
kernel
returns unknown kqueue flags.
(<a
href="https://redirect.github.com/nix-rust/nix/pull/2784">#2784</a>)</li>
</ul>
<h2>[0.31.2] - 2026-02-28</h2>
<h3>Added</h3>
<ul>
<li>Add WatchDescriptor::as_raw, to get libc id of WatchDescriptor.
(<a
href="https://redirect.github.com/nix-rust/nix/pull/2718">#2718</a>)</li>
<li>Added process::pthread_getthreadid_np() on FreeBSD.
(<a
href="https://redirect.github.com/nix-rust/nix/pull/2725">#2725</a>)</li>
<li>Added timerfd support on FreeBSD
(<a
href="https://redirect.github.com/nix-rust/nix/pull/2728">#2728</a>)</li>
</ul>
<h3>Fixed</h3>
<ul>
<li>The libc requirement is now <code>0.2.181</code>, rather than pinned
to 0.2.180.
(<a
href="https://redirect.github.com/nix-rust/nix/pull/2744">#2744</a>)</li>
</ul>
<h2>[0.31.1] - 2026-01-23</h2>
<h3>Added</h3>
<ul>
<li>termios: Add definition for IUCLC to supported platforms
(<a
href="https://redirect.github.com/nix-rust/nix/pull/2702">#2702</a>)</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/nix-rust/nix/commit/b5933ca178802b558a667514f717a86b3a1cedcc"><code>b5933ca</code></a>
chore: release v0.31.3</li>
<li><a
href="https://github.com/nix-rust/nix/commit/5d6a46e065fd5ae670c73b44b2590ca256589194"><code>5d6a46e</code></a>
Replace Cirrus CI with more Github Workflows jobs (<a
href="https://redirect.github.com/nix-rust/nix/issues/2776">#2776</a>)</li>
<li><a
href="https://github.com/nix-rust/nix/commit/3407489043e8070b6294b5786690a60182fb241e"><code>3407489</code></a>
event: add kevent64 support on apple targets (<a
href="https://redirect.github.com/nix-rust/nix/issues/2781">#2781</a>)</li>
<li><a
href="https://github.com/nix-rust/nix/commit/fe80fc5066c8712db901f3a3d672b8c6af67c4d2"><code>fe80fc5</code></a>
chore: resolve clippy useless_borrows_in_formatting (<a
href="https://redirect.github.com/nix-rust/nix/issues/2790">#2790</a>)</li>
<li><a
href="https://github.com/nix-rust/nix/commit/3310fc7db419b04b0aed32fcb6464a12ad96f224"><code>3310fc7</code></a>
Revert &quot;fix(ci): temporarily disable
armv7-unknown-linux-uclibceabihf (<a
href="https://redirect.github.com/nix-rust/nix/issues/2764">#2764</a>)...</li>
<li><a
href="https://github.com/nix-rust/nix/commit/e3ab917517f47e27c845064abec15382792053a7"><code>e3ab917</code></a>
epoll: use from_bits_retain to avoid panics on unknown flags (<a
href="https://redirect.github.com/nix-rust/nix/issues/2783">#2783</a>)</li>
<li><a
href="https://github.com/nix-rust/nix/commit/6c1570194676901d6fddf3600cea5c8358e39eef"><code>6c15701</code></a>
kqueue: use from_bits_retain to avoid panics on unknown flags (<a
href="https://redirect.github.com/nix-rust/nix/issues/2784">#2784</a>)</li>
<li><a
href="https://github.com/nix-rust/nix/commit/73028cf1c742b243895df16ce60948b1c8fa821a"><code>73028cf</code></a>
fix(ci): enable Hurd target (<a
href="https://redirect.github.com/nix-rust/nix/issues/2765">#2765</a>)</li>
<li><a
href="https://github.com/nix-rust/nix/commit/1a680a967648807ea78ded5c4211db8026bebbbd"><code>1a680a9</code></a>
cargo: Remove deprecated package authors field (<a
href="https://redirect.github.com/nix-rust/nix/issues/2789">#2789</a>)</li>
<li><a
href="https://github.com/nix-rust/nix/commit/85cff070dd2baaecb4290df22b1d093d136ca671"><code>85cff07</code></a>
docs: add missing changelog entries (<a
href="https://redirect.github.com/nix-rust/nix/issues/2786">#2786</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/nix-rust/nix/compare/v0.29.0...v0.31.3">compare
view</a></li>
</ul>
</details>
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Cargo.lock

@@ -18,7 +18,7 @@ tokio = { version = "1", features = ["full"] }
 # System introspection (Sysinternals-like)
 sysinfo = "0.31"              # Process, CPU, memory, disk
 procfs = "0.18"               # Linux /proc filesystem
-nix = { version = "0.29", features = ["fs", "process", "net", "user"] }
+nix = { version = "0.31", features = ["fs", "process", "net", "user"] }
 
 # Serialization (always needed)
 serde = { version = "1", features = ["derive"] }

clinician/Cargo.toml

@@ -10,7 +10,7 @@ repository = "https://github.com/hyperpolymath/ambientops"
 
 [dependencies]
 clap = { version = "4", features = ["derive"] }
-nix = { version = "0.29", features = ["signal", "process"] }
+nix = { version = "0.31", features = ["signal", "process"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 anyhow = "1"