[renovate]

This PR contains the following updates:

Package	Type	Update	Change
tokio (source)	dependencies	minor	1.47.1 → 1.54.1

---

Release Notes

tokio-rs/tokio (tokio)

v1.54.1: Tokio v1.54.1

Compare Source

1.54.1 (October 21st, 2026)

Fixed

• time: revert "remove the runtime handle from timers" (#​8692)

v1.54.0: Tokio v1.54.0

Compare Source

1.54.0 (October 19th, 2026)

The 1.54.0 release includes all changes up to 1.53.3.

The MSRV is increased to 1.85. (#​8514)

Added

• fs: add File::set_times, File::set_modified, and fs::FileTimes (#​8504)
• net: implement Default for named_pipe::{ClientOptions, ServerOptions} (#​8378)
• runtime: add Builder::max_io_events_per_busy_tick (#​8410)
• runtime: stabilize tokio::runtime::worker_index() (#​8431)
• sync: add SemaphorePermit::semaphore() (#​8482)
• sync: add blocking_acquire methods to Semaphore (#​8269)
• sync: add watch::Receiver::is_closed (#​8481)
• wasm: support JSPI for Emscripten target (#​8285, #​8627)
• wasm: support the wasm32-unknown-emscripten target (#​8281, #​8422, #​8528, #​8628)

Changed

• fs: reject zero in File::set_max_buf_size (#​8449)
• io: make copy_buf cooperative (#​8459)
• io: panic when BufReader or BufStream is created with zero capacity (#​8494)
• io: panic when in-memory pipe is created with zero capacity (#​8397)
• io: reject zero buffer size in copy_bidirectional_with_sizes (#​8454)
• io: support vectored writes in Sink (#​8663)
• net: start UnixStream::pair and UnixDatagram::pair sockets as writable (#​8444)
• net: start accepted sockets as readable and writable (#​8435)
• net: support UCred on Fuchsia (#​8257)
• process: use mio::unix::pipe for Unix child stdio (#​8603)
• runtime: cache-pad the shared injection queue and idle state (#​8622)
• runtime: decide auto-boxing of spawned futures at monomorphization time (#​8414)
• runtime: make enable_io available whenever rt is enabled (#​8387)
• runtime: move block_in_place setup into a non-generic function (#​8315)
• runtime: move the multi-thread inject queue to its own mutex (#​8382)
• runtime: panic when max_io_events_per_tick is zero (#​8476)
• runtime: suggest .await in nested block_on panic message (#​8501)
• sync: avoid atomic reader count in broadcast slots (#​8357)
• sync: use acquire/release orderings in Notify (#​8325)
• time: remove the runtime handle from timers (#​8458)

Fixed

• fs: restore File internal state when op fails (#​8291)
• io: complete zero-length memory stream operations immediately (#​8323)
• io: flush the writer when the reader stalls in copy_buf (#​8424)
• io: keep the shutdown bit when clearing readiness (#​8435)
• io: preserve the full ScheduledIo tick in readiness events (#​8331)
• io: read lines as bytes so a partial line survives an I/O error (#​8400)
• io: retry on ErrorKind::Interrupted in more I/O operations (#​8417, #​8432, #​8448, #​8453, #​8455, #​8460)
• io: use spawn_mandatory_blocking for stdout and stderr (#​8506)
• io: wait for pending operations before BufReader seeks (#​8599)
• net: close CreateFileW handle on SetNamedPipeHandleState failure (#​8418)
• net: fix peer credentials on NetBSD (#​8589)
• net: saturate TcpSocket and UnixSocket listen backlog (#​8511)
• net: treat ENOTCONN as success in UnixStream::shutdown (#​8526)
• runtime: allow building with --all-features without tokio_unstable (#​8401)
• runtime: avoid overflow in shutdown_timeout() (#​8497)
• runtime: fix spawn_blocking hang when only scheduler workers exist (#​8408)
• runtime: fix misleading signal driver panic message (#​8419)
• sync: preserve FIFO lock order when coop budget is exhausted (#​8371)
• sync: use usize for permit count in SemaphorePermit (#​8405)
• time: avoid interval deadline overflow (#​8385)
• time: handle wrapped top-level timer-wheel slots (#​8334)

Unstable

• fs: fall back when io_uring has no IO driver (#​8165)
• metrics: cap log histogram precision (#​8496)
• runtime: add an opt-in sharded spawn_blocking queue (#​8337)
• runtime: expose schedule latency in task hooks (#​8282)
• taskdump: fix idle bookkeeping when a task dump wakes parked workers (#​8372)
• taskdump: skip non-idle tasks during taskdumps (#​8568)

Documented

• docs: fix stray braces and broken links in rustdoc (#​8605)
• fs: document cancellation behavior of tokio::fs (#​8265)
• net: add Safety docs for named pipe from_raw_handle (#​8378)
• net: document that TcpStream::connect returns only the last error (#​8421)
• runtime: add error documentation for runtime::Builder (#​8297)
• runtime: link available_parallelism in worker count docs (#​8625)
• sync: clarify panic behavior of broadcast::channel() (#​8420)
• sync: fix typo in Semaphore documentation (#​8521)

v1.53.3: Tokio v1.53.3

Compare Source

1.53.3 (October 13th, 2026)

Added

• io: add AsyncFd::register and AsyncFd::register_with_interest (#​8587)

Changed

• io: deprecate AsyncFd::{new, with_interest, try_new, try_with_interest} (#​8587)

Fixed

• io: wake and drop DuplexStream wakers outside the lock (#​8618)
• macros: avoid unreachable_code in join! and try_join! for Infallible (#​8518)
• runtime: fix paused time auto-advancing when I/O wakes a task on current_thread (#​8595)
• sync: wake waiters outside the lock when closing a semaphore (#​8529)
• test: fix several flaky tests (#​8196, #​8427, #​8609)

Fixed (unstable)

• rt: keep io_uring op alive when submission fails after push (#​8185)

v1.53.2: Tokio v1.53.2

Compare Source

1.53.2 (October 3rd, 2026)

Fixed

• fs: handle integer overflow in buffered relative seek (#​8574)
• io: revert "always cleanup AsyncFd registration list on deregister" (#​8540)
• process: unregister Windows wait before closing child handle (#​8564)
• rt: drop blocking pool mutex before shutting down rejected task (#​8562)
• sync: fix mpsc index wraparound in block reclamation (#​8546)
• sync: forget mpsc Permit before sending value (#​8560)
• sync: validate MAX_PERMITS in Semaphore::acquire (#​8548)
• sync: wake broadcast Sender::closed outside mutex (#​8558)
• task: drop replaced waker outside lock in JoinSet (#​8554)
• time: drop timer lock before dropping waker in clear_entry (#​8552)
• time: expire timers directly on shutdown without rotating wheel (#​8570)

Fixed (unstable)

• fs: clamp io_uring read length to u32::MAX (#​8572)
• rt: ignore current_thread task dumps from other runtimes (#​8544)
• rt: preserve io_uring context if a completion waker panics (#​8566)
• sync: fix semaphore use-after-free and permit leak on tracing panic (#​8542)
• taskdump: restore deferred leaf wakes during capture (#​8445)
• time: drop stored waker when cancelling alt timer entry (#​8550)

v1.53.1: Tokio v1.53.1

Compare Source

1.53.1 (July 20th, 2026)

Fixed

• signal: restore MSRV by removing OnceLock::wait from the Windows handler (#​8300)

Fixed (unstable)

• time: fix alt timer cancellation and insertion race (#​8252)

Documented

• runtime: remove dead link definition in Runtime::block_on (#​8301)

v1.53.0: Tokio v1.53.0

Compare Source

1.53.0 (July 17th, 2026)

Added

• fs: implement From<OwnedFd> and From<OwnedHandle> for File (#​8266)
• metrics: add task schedule latency metric (#​7986)
• net: add SocketAddr methods to Unix sockets (#​8144)

Changed

• io: add #[inline] to IO trait impls for in-memory types (#​8242)
• net: implement UCred::pid on FreeBSD (#​8086)
• net: support Nuttx target os (#​8259)
• signal: refactor global variables on Windows (#​8231)
• sync: mpsc::{Receiver,UnboundedReceiver} now drops waker on drop, even if there are still senders (#​8095)
• taskdump: support taskdumps on s390x (#​8192)
• time: add #[track_caller] to timeout_at() (#​8077)
• time: consolidate mutex locks on spurious poll (#​8124)
• time: defer waker clone on spurious poll (#​8107)
• time: move lazy-registration state into Sleep (#​8132)
• tracing: remove unnecessary span clone (#​8126)

Fixed

• io: do not treat zero-length reads as EOF in Chain (#​8251)
• net: use getpeereid for QNX peer credentials (#​8270)
• runtime: avoid illegal state in FastRand (#​8078)
• sync: wake mpsc receiver when a queued reserve[_many] returns permits (#​8260)
• taskdump: skip double wake on Trace::capture/Trace::trace_with (#​8043)
• time: avoid stack overflow in runtime constructor (#​8093)
• time (alt timer): ensure timers stay in the same runtime after .reset() (#​8169)

IO uring (unstable)

• fs: use io-uring for fs::try_exists (#​8080)
• fs: use io-uring for renaming files (#​7800)
• rt: flush io-uring CQE in case of CQE overflow (#​8277)

Documented

• docs: clarify cancel safety wording (#​8181)
• fs: clarify create_dir_all succeeds if path exists (#​8149)
• io: add warning about stdout reordering with multiple handles (#​8276)
• net: document pipe try_read*/try_write* readiness behavior (#​8032)
• runtime: document interaction with fork() (#​8202)
• sync: clarify broadcast lagging semantics (#​8239)
• sync: document memory ordering guarantees for Semaphore (#​8119)
• task: explain why yield_now defers its waker (#​8254)
• time: add panic docs to timeout_at() (#​8077)
• time: fix reversed poll order in timeout doc (#​8214)

v1.52.4: Tokio v1.52.4

Compare Source

1.52.4 (July 16th, 2026)

Fixed

• runtime: don't skip the driver when before_park schedules work (#​8222)

Fixed (unstable)

• taskdump: remove crate disambiguators from output (#​8264)

v1.52.3: Tokio v1.52.3

Compare Source

1.52.3 (May 8th, 2026)

Fixed

• sync: fix underflow in mpsc channel len() (#​8062)
• sync: notify receivers in mpsc OwnedPermit::release() method (#​8075)
• sync: require that an RwLock has max_readers != 0 (#​8076)
• sync: return Empty from try_recv() when mpsc is closed with outstanding permits (#​8074)

v1.52.2: Tokio v1.52.2

Compare Source

1.52.2 (May 4th, 2026)

This release reverts the LIFO slot stealing change introduced in 1.51.0 (#​7431), due to its performance impact. (#​8100)

v1.52.1: Tokio v1.52.1

Compare Source

1.52.1 (April 16th, 2026)

Fixed

• runtime: revert #​7757 to fix a regression that causes spawn_blocking to hang (#​8057)

v1.52.0: Tokio v1.52.0

Compare Source

1.52.0 (April 14th, 2026)

Added

• io: AioSource::register_borrowed for I/O safety support (#​7992)
• net: add try_io function to unix::pipe sender and receiver types (#​8030)

Added (unstable)

• runtime: Builder::enable_eager_driver_handoff setting enable eager hand off of the I/O and time drivers before polling tasks (#​8010)
• taskdump: add trace_with() for customized task dumps (#​8025)
• taskdump: allow impl FnMut() in trace_with instead of just fn() (#​8040)
• fs: support io_uring in AsyncRead for File (#​7907)

Changed

• runtime: improve spawn_blocking scalability with sharded queue (#​7757)
• runtime: use compare_exchange_weak() in worker queue (#​8028)

Fixed

• runtime: overflow second half of tasks when local queue is filled instead of first half (#​8029)

Documented

• docs: fix typo in oneshot::Sender::send docs (#​8026)
• docs: hide #[tokio::main] attribute in the docs of sync::watch (#​8035)
• net: add docs on ConnectionRefused errors with UDP sockets (#​7870)

v1.51.6: Tokio v1.51.6

Compare Source

1.51.6 (October 13th, 2026)

Added

• io: add AsyncFd::register and AsyncFd::register_with_interest (#​8587)

Changed

• io: deprecate AsyncFd::{new, with_interest, try_new, try_with_interest} (#​8587)

Fixed

• io: wake and drop DuplexStream wakers outside the lock (#​8618)
• macros: avoid unreachable_code in join! and try_join! for Infallible (#​8518)
• runtime: fix paused time auto-advancing when I/O wakes a task on current_thread (#​8595)
• sync: wake waiters outside the lock when closing a semaphore (#​8529)
• test: fix several flaky tests (#​8196, #​8427, #​8609)

v1.51.5: Tokio v1.51.5

Compare Source

1.51.5 (October 3rd, 2026)

Fixed

• fs: handle integer overflow in buffered relative seek (#​8574)
• io: revert "always cleanup AsyncFd registration list on deregister" (#​8540)
• process: unregister Windows wait before closing child handle (#​8564)
• rt: drop blocking pool mutex before shutting down rejected task (#​8562)
• sync: fix mpsc index wraparound in block reclamation (#​8546)
• sync: forget mpsc Permit before sending value (#​8560)
• sync: validate MAX_PERMITS in Semaphore::acquire (#​8548)
• sync: wake broadcast Sender::closed outside mutex (#​8558)
• task: drop replaced waker outside lock in JoinSet (#​8554)
• time: drop timer lock before dropping waker in clear_entry (#​8552)
• time: expire timers directly on shutdown without rotating wheel (#​8570)

Fixed (unstable)

• rt: ignore current_thread task dumps from other runtimes (#​8544)
• rt: preserve io_uring context if a completion waker panics (#​8566)
• sync: fix semaphore use-after-free and permit leak on tracing panic (#​8542)
• time: drop stored waker when cancelling alt timer entry (#​8550)

v1.51.4: Tokio v1.51.4

Compare Source

1.51.4 (July 16th, 2026)

Fixed

• runtime: don't skip the driver when before_park schedules work (#​8222)

v1.51.3: Tokio v1.51.3

Compare Source

1.51.3 (May 8th, 2026)

Fixed

• sync: fix underflow in mpsc channel len() (#​8062)
• sync: notify receivers in mpsc OwnedPermit::release() method (#​8075)
• sync: require that an RwLock has max_readers != 0 (#​8076)
• sync: return Empty from try_recv() when mpsc is closed with outstanding permits (#​8074)

v1.51.2: Tokio v1.51.1

Compare Source

1.51.2 (May 4th, 2026)

This release reverts the LIFO slot stealing change introduced in 1.51.0 (#​7431), due to its performance impact. (#​8100)

v1.51.1: Tokio v1.51.1

Compare Source

1.51.1 (April 8th, 2026)

Fixed

• sync: fix semaphore reopens after forget (#​8021)
• net: surface errors from SO_ERROR on recv for UDP sockets on Linux (#​8001)

Fixed (unstable)

• metrics: fix worker_local_schedule_count test (#​8008)
• rt: do not leak fd when cancelling io_uring open operation (#​7983)

v1.51.0: Tokio v1.51.0

Compare Source

1.51.0 (April 3rd, 2026)

Added

• net: implement get_peer_cred on Hurd (#​7989)
• runtime: add tokio::runtime::worker_index() (#​7921)
• runtime: add runtime name (#​7924)
• runtime: stabilize LocalRuntime (#​7557)
• wasm: add wasm32-wasip2 networking support (#​7933)

Changed

• runtime: steal tasks from the LIFO slot (#​7431)

Fixed

• docs: do not show "Available on non-loom only." doc label (#​7977)
• macros: improve overall macro hygiene (#​7997)
• sync: fix notify_waiters priority in Notify (#​7996)
• sync: fix panic in Chan::recv_many when called with non-empty vector on closed channel (#​7991)

v1.50.0: Tokio v1.50.0

Compare Source

1.50.0 (Mar 3rd, 2026)

Added

• net: add TcpStream::set_zero_linger (#​7837)
• rt: add is_rt_shutdown_err (#​7771)

Changed

• io: add optimizer hint that memchr returns in-bounds pointer (#​7792)
• io: implement vectored writes for write_buf (#​7871)
• runtime: panic when event_interval is set to 0 (#​7838)
• runtime: shorten default thread name to fit in Linux limit (#​7880)
• signal: remember the result of SetConsoleCtrlHandler (#​7833)
• signal: specialize windows Registry (#​7885)

Fixed

• io: always cleanup AsyncFd registration list on deregister (#​7773)
• macros: remove (most) local use declarations in tokio::select! (#​7929)
• net: fix GET_BUF_SIZE constant for target_os = "android" (#​7889)
• runtime: avoid redundant unpark in current_thread scheduler (#​7834)
• runtime: don't park in current_thread if before_park defers waker (#​7835)
• io: fix write readiness on ESP32 on short writes (#​7872)
• runtime: wake deferred tasks before entering block_in_place (#​7879)
• sync: drop rx waker when oneshot receiver is dropped (#​7886)
• runtime: fix double increment of num_idle_threads on shutdown (#​7910, #​7918, #​7922)

Unstable

• fs: check for io-uring opcode support (#​7815)
• runtime: avoid lock acquisition after uring init (#​7850)

Documented

• docs: update outdated unstable features section (#​7839)
• io: clarify the behavior of AsyncWriteExt::shutdown() (#​7908)
• io: explain how to flush stdout/stderr (#​7904)
• io: fix incorrect and confusing AsyncWrite documentation (#​7875)
• rt: clarify the documentation of Runtime::spawn (#​7803)
• rt: fix missing quotation in docs (#​7925)
• runtime: correct the default thread name in docs (#​7896)
• runtime: fix event_interval doc (#​7932)
• sync: clarify RwLock fairness documentation (#​7919)
• sync: clarify that recv returns None once closed and no more messages (#​7920)
• task: clarify when to use spawn_blocking vs dedicated threads (#​7923)
• task: doc that task drops before JoinHandle completion (#​7825)
• signal: guarantee that listeners never return None (#​7869)
• task: fix task module feature flags in docs (#​7891)
• task: fix two typos (#​7913)
• task: improve the docs of Builder::spawn_local (#​7828)
• time: add docs about auto-advance and when to use sleep (#​7858)
• util: fix typo in docs (#​7926)

v1.49.0: Tokio v1.49.0

Compare Source

1.49.0 (January 3rd, 2026)

Added

• net: add support for TCLASS option on IPv6 (#​7781)
• runtime: stabilize runtime::id::Id (#​7125)
• task: implement Extend for JoinSet (#​7195)
• task: stabilize the LocalSet::id() (#​7776)

Changed

• net: deprecate {TcpStream,TcpSocket}::set_linger (#​7752)

Fixed

• macros: fix the hygiene issue of join! and try_join! (#​7766)
• runtime: revert "replace manual vtable definitions with Wake" (#​7699)
• sync: return TryRecvError::Disconnected from Receiver::try_recv after Receiver::close (#​7686)
• task: remove unnecessary trait bounds on the Debug implementation (#​7720)

Unstable

• fs: handle EINTR in fs::write for io-uring (#​7786)
• fs: support io-uring with tokio::fs::read (#​7696)
• runtime: disable io-uring on EPERM (#​7724)
• time: add alternative timer for better multicore scalability (#​7467)

Documented

• docs: fix a typos in bounded.rs and park.rs (#​7817)
• io: add SyncIoBridge cross-references to copy and copy_buf (#​7798)
• io: doc that AsyncWrite does not inherit from std::io::Write (#​7705)
• metrics: clarify that num_alive_tasks is not strongly consistent (#​7614)
• net: clarify the cancellation safety of the TcpStream::peek (#​7305)
• net: clarify the drop behavior of unix::OwnedWriteHalf (#​7742)
• net: clarify the platform-dependent backlog in TcpSocket docs (#​7738)
• runtime: mention LocalRuntime in new_current_thread docs (#​7820)
• sync: add missing period to mpsc::Sender::try_send docs (#​7721)
• sync: clarify the cancellation safety of oneshot::Receiver (#​7780)
• sync: improve the docs for the errors of mpsc (#​7722)
• task: add example for spawn_local usage on local runtime (#​7689)

v1.48.0: Tokio v1.48.0

Compare Source

1.48.0 (October 14th, 2025)

The MSRV is increased to 1.71.

Added

• fs: add File::max_buf_size (#​7594)
• io: export Chain of AsyncReadExt::chain (#​7599)
• net: add SocketAddr::as_abstract_name (#​7491)
• net: add TcpStream::quickack and TcpStream::set_quickack (#​7490)
• net: implement AsRef<Self> for TcpStream and UnixStream (#​7573)
• task: add LocalKey::try_get (#​7666)
• task: implement Ord for task::Id (#​7530)

Changed

• deps: bump windows-sys to version 0.61 (#​7645)
• fs: preserve max_buf_size when cloning a File (#​7593)
• macros: suppress clippy::unwrap_in_result in #[tokio::main] (#​7651)
• net: remove PollEvented noise from Debug formats (#​7675)
• process: upgrade Command::spawn_with to use FnOnce (#​7511)
• sync: remove inner mutex in SetOnce (#​7554)
• sync: use UnsafeCell::get_mut in Mutex::get_mut and RwLock::get_mut (#​7569)
• time: reduce the generated code size of Timeout<T>::poll (#​7535)

Fixed

• macros: fix hygiene issue in join! and try_join! (#​7638)
• net: fix copy/paste errors in udp peek methods (#​7604)
• process: fix error when runtime is shut down on nightly-2025-10-12 (#​7672)
• runtime: use release ordering in wake_by_ref() even if already woken (#​7622)
• sync: close the broadcast::Sender in broadcast::Sender::new() (#​7629)
• sync: fix implementation of unused RwLock::try_* methods (#​7587)

Unstable

• tokio: use cargo features instead of --cfg flags for taskdump and io_uring (#​7655, #​7621)
• fs: support io_uring in fs::write (#​7567)
• fs: support io_uring with File::open() (#​7617)
• fs: support io_uring with OpenOptions (#​7321)
• macros: add local runtime flavor (#​7375, #​7597)

Documented

• io: clarify the zero capacity case of AsyncRead::poll_read (#​7580)
• io: fix typos in the docs of AsyncFd readiness guards (#​7583)
• net: clarify socket gets closed on drop (#​7526)
• net: clarify the behavior of UCred::pid() on Cygwin (#​7611)
• net: clarify the supported platform of set_reuseport() and reuseport() (#​7628)
• net: qualify that SO_REUSEADDR is only set on Unix (#​7533)
• runtime: add guide for choosing between runtime types (#​7635)
• runtime: clarify the behavior of Handle::block_on (#​7665)
• runtime: clarify the edge case of Builder::global_queue_interval() (#​7605)
• sync: clarify bounded channel panic behavior (#​7641)
• sync: clarify the behavior of tokio::sync::watch::Receiver (#​7584)
• sync: document cancel safety on SetOnce::wait (#​7506)
• sync: fix the docs of parking_lot feature flag (#​7663)
• sync: improve the docs of UnboundedSender::send (#​7661)
• sync: improve the docs of sync::watch (#​7601)
• sync: reword allocation failure paragraph in broadcast docs (#​7595)
• task: clarify the behavior of several spawn_local methods (#​7669)
• task: clarify the task ID reuse guarantees (#​7577)
• task: improve the example of poll_proceed (#​7586)

v1.47.5: Tokio v1.47.5

Compare Source

1.47.5 (May 7th, 2026)

Fixed

• sync: fix underflow in mpsc channel len() (#​8062)
• sync: notify receivers in mpsc OwnedPermit::release() method (#​8075)
• sync: require that an RwLock has max_readers != 0 (#​8076)
• sync: return Empty from try_recv() when mpsc is closed with outstanding permits (#​8074)

v1.47.4: Tokio v1.47.4

Compare Source

1.47.4 (April 2nd, 2026)

Fixed

• sync: fix panic in Chan::recv_many when called with non-empty vector on closed channel (#​7991)

v1.47.3

Compare Source

v1.47.2

Compare Source

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[doubleword-code]

Summary

This PR is an automated dependency update from Renovate that upgrades the tokio crate from version 1.47.1 to 1.52.2. The change only affects Cargo.lock, updating tokio and its transitive dependencies (tokio-macros, mio, socket2, libc) while removing several dependencies that are no longer required (backtrace, io-uring, addr2line, gimli, object, miniz_oxide, adler2, rustc-demangle). These removed dependencies were likely optional features that are no longer enabled by default.

Findings

• Nit Cargo.toml:4: The Rust edition is set to 2024, which is not yet a stable edition as of early 2026. This may cause compatibility issues with some toolchains. Consider using 2021 unless you have a specific need for nightly 2024 features.

• Non-blocking Cargo.lock: The tokio update includes versions 1.51.0-1.52.2 which had some performance-related changes (LIFO slot stealing) that were subsequently reverted in 1.52.2 due to performance regressions. The final version (1.52.2) is stable, but you may want to verify performance is acceptable after deployment.

• Nit src/main.rs:27: The application uses #[tokio::main] and tokio::spawn which are stable APIs. However, there are no unit or integration tests in the repository to verify the application works correctly after dependency updates. Consider adding basic tests that exercise the tokio runtime functionality.

• Non-blocking Cargo.lock: Several transitive dependencies were removed (backtrace, io-uring, etc.). If your deployment environment relies on backtrace for error reporting, you may want to verify error messages are still informative. The anyhow crate should still provide adequate error context.

Suggested next steps

This is a routine dependency update with low risk. The CI pipeline (cargo test, cargo clippy, cargo fmt) should validate the update before merge. I recommend:

1. Ensure CI passes with the updated dependencies
2. Consider adding basic integration tests to catch runtime issues from future dependency updates
3. Optionally verify the application starts and handles requests correctly in a staging environment after merge

Approval recommendation: ✅ Ready to merge pending CI success.