tokio-1.48.0

# 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])

[#7321]: https://github.com/tokio-rs/tokio/pull/7321
[#7375]: https://github.com/tokio-rs/tokio/pull/7375
[#7490]: https://github.com/tokio-rs/tokio/pull/7490
[#7491]: https://github.com/tokio-rs/tokio/pull/7491
[#7494]: https://github.com/tokio-rs/tokio/pull/7494
[#7506]: https://github.com/tokio-rs/tokio/pull/7506
[#7511]: https://github.com/tokio-rs/tokio/pull/7511
[#7526]: https://github.com/tokio-rs/tokio/pull/7526
[#7530]: https://github.com/tokio-rs/tokio/pull/7530
[#7533]: https://github.com/tokio-rs/tokio/pull/7533
[#7535]: https://github.com/tokio-rs/tokio/pull/7535
[#7554]: https://github.com/tokio-rs/tokio/pull/7554
[#7567]: https://github.com/tokio-rs/tokio/pull/7567
[#7569]: https://github.com/tokio-rs/tokio/pull/7569
[#7573]: https://github.com/tokio-rs/tokio/pull/7573
[#7577]: https://github.com/tokio-rs/tokio/pull/7577
[#7580]: https://github.com/tokio-rs/tokio/pull/7580
[#7583]: https://github.com/tokio-rs/tokio/pull/7583
[#7584]: https://github.com/tokio-rs/tokio/pull/7584
[#7586]: https://github.com/tokio-rs/tokio/pull/7586
[#7587]: https://github.com/tokio-rs/tokio/pull/7587
[#7593]: https://github.com/tokio-rs/tokio/pull/7593
[#7594]: https://github.com/tokio-rs/tokio/pull/7594
[#7595]: https://github.com/tokio-rs/tokio/pull/7595
[#7597]: https://github.com/tokio-rs/tokio/pull/7597
[#7599]: https://github.com/tokio-rs/tokio/pull/7599
[#7601]: https://github.com/tokio-rs/tokio/pull/7601
[#7604]: https://github.com/tokio-rs/tokio/pull/7604
[#7605]: https://github.com/tokio-rs/tokio/pull/7605
[#7611]: https://github.com/tokio-rs/tokio/pull/7611
[#7617]: https://github.com/tokio-rs/tokio/pull/7617
[#7621]: https://github.com/tokio-rs/tokio/pull/7621
[#7622]: https://github.com/tokio-rs/tokio/pull/7622
[#7628]: https://github.com/tokio-rs/tokio/pull/7628
[#7629]: https://github.com/tokio-rs/tokio/pull/7629
[#7635]: https://github.com/tokio-rs/tokio/pull/7635
[#7638]: https://github.com/tokio-rs/tokio/pull/7638
[#7641]: https://github.com/tokio-rs/tokio/pull/7641
[#7645]: https://github.com/tokio-rs/tokio/pull/7645
[#7651]: https://github.com/tokio-rs/tokio/pull/7651
[#7655]: https://github.com/tokio-rs/tokio/pull/7655
[#7661]: https://github.com/tokio-rs/tokio/pull/7661
[#7663]: https://github.com/tokio-rs/tokio/pull/7663
[#7665]: https://github.com/tokio-rs/tokio/pull/7665
[#7666]: https://github.com/tokio-rs/tokio/pull/7666
[#7669]: https://github.com/tokio-rs/tokio/pull/7669
[#7672]: https://github.com/tokio-rs/tokio/pull/7672
[#7675]: https://github.com/tokio-rs/tokio/pull/7675