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)