Issues

• OpenBSD: concurrent UDP sends can wait forever

  A-tokioC-bugM-net
  tokio-rs/tokio#8643 · Filter by author jedisct1 opened on Oct 13, 2026
  3

• AsyncFd stalls after WouldBlock with Mio’s poll selector

  A-tokioC-bugM-io
  tokio-rs/tokio#8620 · Filter by author darkraider01 opened on Oct 10, 2026
  2

• Ambiguity of Framed + SinkExt introduced by impl both Encoder<&[u8]> and Encoder<Bytes> on LengthDelimitedCodec

  A-tokio-utilC-bugM-codecS-blocked
  tokio-rs/tokio#8614 · Filter by author Ricardo-Evans opened on Oct 10, 2026
  1

• Sharded spawn_blocking queue can leave later shards waiting under load

  A-tokioC-bugM-runtime
  tokio-rs/tokio#8527 · Filter by author darkraider01 opened on Sep 29, 2026
  2

• Enchance the Competion enum/struct to avoid representing invalid states in io-uring

  A-tokioC-bugT-io-uring
  tokio-rs/tokio#8492 · Filter by author Daksh14 opened on Sep 17, 2026
  1

  

• -Z minimal-versions resolves known vulnerable dependencies

  A-tokioC-maintenance
  tokio-rs/tokio#8477 · Filter by author xtqqczze opened on Sep 14, 2026
  5

• Runtime stall with large number of spawn_blocking tasks

  A-tokioC-bugM-blocking
  tokio-rs/tokio#8470 · Filter by author trungda opened on Sep 14, 2026
  2

• Add helper method to probe kernel for io-uring for IO operation

  A-tokioT-io-uring
  tokio-rs/tokio#8437 · Filter by author Daksh14 opened on Sep 9, 2026
  1

  

• taskdump: trace_leaf returning Pending without a wake (#8043) permanently strands FuturesUnordered children polled under trace_with

  A-tokioC-bugM-taskdump
  tokio-rs/tokio#8434 · Filter by author marcbowes opened on Sep 8, 2026
  4

• Properly handle fs and io-std under emscripten

  A-tokioM-fsM-ioT-wasm
  tokio-rs/tokio#8411 · Filter by author Darksonn opened on Sep 5, 2026
  1

• tokio::io::unix should not be feature-gated on net

  A-tokioC-bugM-io
  tokio-rs/tokio#8409 · Filter by author dfoxfranke opened on Sep 4, 2026
  1

• Handle::dump() panics with "RefCell already borrowed" when a traced task wakes a task (current_thread runtime)

  A-tokioC-bugM-taskdump
  tokio-rs/tokio#8391 · Filter by author tillrohrmann opened on Aug 26, 2026

• rt(threaded): harden the idle-bookkeeping invariant

  A-tokioC-feature-request
  tokio-rs/tokio#8373 · Filter by author yzfeng2020 opened on Aug 19, 2026
  1

• into_std-like API for windows::named_pipe::NamedPipe*

  A-tokioC-feature-requestM-net
  tokio-rs/tokio#8368 · Filter by author purplesyringa opened on Aug 18, 2026
  2

• Subpar tokio::fs io_uring performance on concurrent positional reads (1.5x slower than pread o_direct)

  A-tokioC-feature-request
  tokio-rs/tokio#8367 · Filter by author kdn36 opened on Aug 18, 2026
  1

• add has_time_driver to check if timeout is available on a runtime without panicking

  A-tokioC-feature-requestM-time
  tokio-rs/tokio#8361 · Filter by author yannham opened on Aug 13, 2026

• tokio_test::io::Mock silently hangs on a write instead of panicking

  A-tokio-test
  tokio-rs/tokio#8329 · Filter by author ameyypawar opened on Jul 29, 2026
  4

• Alternative algorithm for AtomicWaker

  A-tokioM-syncT-performance
  tokio-rs/tokio#8240 · Filter by author wyfo opened on Jun 30, 2026
  12

• Add io-uring support on tokio::fs::metadata and tokio::fs::symlink_metadata

  A-tokioC-feature-requestM-fsT-io-uring
  tokio-rs/tokio#8211 · Filter by author asder8215 opened on Jun 14, 2026
  3

• tokio::select! never return pattern

  A-tokioC-feature-requestM-macros
  tokio-rs/tokio#8199 · Filter by author yuan-y-chang opened on Jun 8, 2026
  1

• alternative timer compatibility hazard

  A-tokioC-bugM-time
  tokio-rs/tokio#8198 · Filter by author vilgotf opened on Jun 7, 2026
  6

• Supporting wasm32-unknown-emscripten

  A-tokioC-feature-requestT-wasm
  tokio-rs/tokio#8194 · Filter by author guybedford opened on Jun 5, 2026
  7

• tokio::fs::File::poll_write can panic after a previous write returned an error

  A-tokioM-fs
  tokio-rs/tokio#8182 · Filter by author mikekap opened on Jun 1, 2026

• QNX (nto) target: LOCAL_PEEREID / SO_PEERCRED absent from QNX SDP 8.0 headers

  A-tokioC-bugM-net
  tokio-rs/tokio#8178 · Filter by author justinlooney opened on May 29, 2026
  5

• tokio::time::sleep has ~19ms overhead on BSD

  A-tokioC-bugM-time
  tokio-rs/tokio#8121 · Filter by author WhyNotHugo opened on May 6, 2026
  11