Upgrade to 0.30

Summary:
Breaking changes all look like things that should show up at compile time, so probably pretty safe.

Release notes:
https://github.com/nix-rust/nix/blob/v0.30.1/CHANGELOG.md#0300---2025-04-29

This upgrade does involve nix broadly adopting the IO safety primitives from std. The changes that requires to the code are mostly pretty cosmetic, but nonetheless significant improvements in a number of cases. Nothing too interesting among those except I guess the hack one, post about that [here](https://fb.workplace.com/groups/learningrust/permalink/4089204734683714/)

Reviewed By: capickett

Differential Revision: D78638157

fbshipit-source-id: 3537fffe72e2b16125c1e916dffbd238870899d3

Author: JakobDegen

hyperactor/Cargo.toml

@@ -38,7 +38,7 @@ hyperactor_telemetry = { version = "0.0.0", path = "../hyperactor_telemetry" }
 inventory = "0.3.8"
 lazy_static = "1.5"
 ndslice = { version = "0.0.0", path = "../ndslice" }
-nix = { version = "0.29.0", features = ["dir", "event", "hostname", "inotify", "ioctl", "mman", "mount", "net", "poll", "ptrace", "reboot", "resource", "sched", "signal", "term", "time", "user", "zerocopy"] }
+nix = { version = "0.30.1", features = ["dir", "event", "hostname", "inotify", "ioctl", "mman", "mount", "net", "poll", "ptrace", "reboot", "resource", "sched", "signal", "term", "time", "user", "zerocopy"] }
 opentelemetry = "0.29"
 paste = "1.0.14"
 rand = { version = "0.8", features = ["small_rng"] }

hyperactor_mesh/Cargo.toml

@@ -50,7 +50,7 @@ hyperactor_telemetry = { version = "0.0.0", path = "../hyperactor_telemetry" }
 libc = "0.2.139"
 mockall = "0.13.1"
 ndslice = { version = "0.0.0", path = "../ndslice" }
-nix = { version = "0.29.0", features = ["dir", "event", "hostname", "inotify", "ioctl", "mman", "mount", "net", "poll", "ptrace", "reboot", "resource", "sched", "signal", "term", "time", "user", "zerocopy"] }
+nix = { version = "0.30.1", features = ["dir", "event", "hostname", "inotify", "ioctl", "mman", "mount", "net", "poll", "ptrace", "reboot", "resource", "sched", "signal", "term", "time", "user", "zerocopy"] }
 pin-project = "1.1.10"
 preempt_rwlock = { version = "0.0.0", path = "../preempt_rwlock" }
 rand = { version = "0.8", features = ["small_rng"] }

monarch_hyperactor/Cargo.toml

@@ -28,7 +28,7 @@ inventory = "0.3.8"
 lazy_static = "1.5"
 monarch_types = { version = "0.0.0", path = "../monarch_types" }
 ndslice = { version = "0.0.0", path = "../ndslice" }
-nix = { version = "0.29.0", features = ["dir", "event", "hostname", "inotify", "ioctl", "mman", "mount", "net", "poll", "ptrace", "reboot", "resource", "sched", "signal", "term", "time", "user", "zerocopy"] }
+nix = { version = "0.30.1", features = ["dir", "event", "hostname", "inotify", "ioctl", "mman", "mount", "net", "poll", "ptrace", "reboot", "resource", "sched", "signal", "term", "time", "user", "zerocopy"] }
 opentelemetry = "0.29"
 pyo3 = { version = "0.24", features = ["anyhow", "multiple-pymethods"] }
 pyo3-async-runtimes = { version = "0.24", features = ["attributes", "tokio-runtime"] }

monarch_tensor_worker/Cargo.toml

@@ -23,7 +23,7 @@ monarch_hyperactor = { version = "0.0.0", path = "../monarch_hyperactor" }
 monarch_messages = { version = "0.0.0", path = "../monarch_messages" }
 monarch_types = { version = "0.0.0", path = "../monarch_types" }
 ndslice = { version = "0.0.0", path = "../ndslice" }
-nix = { version = "0.29.0", features = ["dir", "event", "hostname", "inotify", "ioctl", "mman", "mount", "net", "poll", "ptrace", "reboot", "resource", "sched", "signal", "term", "time", "user", "zerocopy"] }
+nix = { version = "0.30.1", features = ["dir", "event", "hostname", "inotify", "ioctl", "mman", "mount", "net", "poll", "ptrace", "reboot", "resource", "sched", "signal", "term", "time", "user", "zerocopy"] }
 parking_lot = { version = "0.12.1", features = ["send_guard"] }
 pyo3 = { version = "0.24", features = ["anyhow", "multiple-pymethods"] }
 serde = { version = "1.0.219", features = ["derive", "rc"] }