Update Rust crate tokio to v1.52.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
tokio (source)	dependencies	minor	1.45.1 → 1.52.0

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Release Notes

tokio-rs/tokio (tokio)

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)

v1.51.1: 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)

v1.47.4: 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

v1.47.1: Tokio v1.47.1

Compare Source

1.47.1 (August 1st, 2025)

Fixed

• process: fix panic from spurious pidfd wakeup (#​7494)
• sync: fix broken link of Python asyncio.Event in SetOnce docs (#​7485)

v1.47.0: Tokio v1.47.0

Compare Source

1.47.0 (July 25th, 2025)

This release adds poll_proceed and cooperative to the coop module for
cooperative scheduling, adds SetOnce to the sync module which provides
similar functionality to [std::sync::OnceLock], and adds a new method
sync::Notify::notified_owned() which returns an OwnedNotified without
a lifetime parameter.

Added

• coop: add cooperative and poll_proceed (#​7405)
• sync: add SetOnce (#​7418)
• sync: add sync::Notify::notified_owned() (#​7465)

Changed

• deps: upgrade windows-sys 0.52 → 0.59 ([#​7117])
• deps: update to socket2 v0.6 ([#​7443])
• sync: improve AtomicWaker::wake performance (#​7450)

Documented

• metrics: fix listed feature requirements for some metrics (#​7449)
• runtime: improve safety comments of Readiness<'_> (#​7415)

v1.46.1: Tokio v1.46.1

Compare Source

1.46.1 (July 4th, 2025)

This release fixes incorrect spawn locations in runtime task hooks for tasks spawned using tokio::spawn rather than Runtime::spawn. This issue only effected the spawn location in TaskMeta::spawned_at, and did not effect task locations in Tracing events.

Unstable

• runtime: add TaskMeta::spawn_location tracking where a task was spawned (#​7440)

v1.46.0: Tokio v1.46.0

Compare Source

1.46.0 (July 2nd, 2025)

Fixed

• net: fixed TcpStream::shutdown incorrectly returning an error on macOS (#​7290)

Added

• sync: mpsc::OwnedPermit::{same_channel, same_channel_as_sender} methods (#​7389)
• macros: biased option for join! and try_join!, similar to select! (#​7307)
• net: support for cygwin (#​7393)
• net: support pope::OpenOptions::read_write on Android (#​7426)
• net: add Clone implementation for net::unix::SocketAddr (#​7422)

Changed

• runtime: eliminate unnecessary lfence while operating on queue::Local<T> (#​7340)
• task: disallow blocking in LocalSet::{poll,drop} (#​7372)

Unstable

• runtime: add TaskMeta::spawn_location tracking where a task was spawned (#​7417)
• runtime: removed borrow from LocalOptions parameter to runtime::Builder::build_local (#​7346)

Documented

• io: clarify behavior of seeking when start_seek is not used (#​7366)
• io: document cancellation safety of AsyncWriteExt::flush (#​7364)
• net: fix docs for recv_buffer_size method (#​7336)
• net: fix broken link of RawFd in TcpSocket docs (#​7416)
• net: update AsRawFd doc link to current Rust stdlib location (#​7429)
• readme: fix double period in reactor description (#​7363)
• runtime: add doc note that on_*_task_poll is unstable (#​7311)
• sync: update broadcast docs on allocation failure (#​7352)
• time: add a missing panic scenario of time::advance (#​7394)

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