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fix(deps): update rust crate tokio to 1.21.0

renovate requested to merge renovate/tokio-1.x into main

This MR contains the following updates:

Package Type Update Change
tokio (source) dependencies minor 1.20.1 -> 1.21.0

Release Notes

tokio-rs/tokio

v1.21.0

Compare Source

1.21.0 (September 2, 2022)

This release is the first release of Tokio to intentionally support WASM. The sync,macros,io-util,rt,time features are stabilized on WASM. Additionally the wasm32-wasi target is given unstable support for the net feature.

Added
  • net: add device and bind_device methods to TCP/UDP sockets (#​4882)
  • net: add tos and set_tos methods to TCP and UDP sockets (#​4877)
  • net: add security flags to named pipe ServerOptions (#​4845)
  • signal: add more windows signal handlers (#​4924)
  • sync: add mpsc::Sender::max_capacity method (#​4904)
  • sync: implement Weak version of mpsc::Sender (#​4595)
  • task: add LocalSet::enter (#​4765)
  • task: stabilize JoinSet and AbortHandle (#​4920)
  • tokio: add track_caller to public APIs (#​4805, #​4848, #​4852)
  • wasm: initial support for wasm32-wasi target (#​4716)
Fixed
  • miri: improve miri compatibility by avoiding temporary references in linked_list::Link impls (#​4841)
  • signal: don't register write interest on signal pipe (#​4898)
  • sync: add #[must_use] to lock guards (#​4886)
  • sync: fix hang when calling recv on closed and reopened broadcast channel (#​4867)
  • task: propagate attributes on task-locals (#​4837)
Changed
  • fs: change panic to error in File::start_seek (#​4897)
  • io: reduce syscalls in poll_read (#​4840)
  • process: use blocking threadpool for child stdio I/O (#​4824)
  • signal: make SignalKind methods const (#​4956)
Internal changes
  • rt: extract basic_scheduler::Config (#​4935)
  • rt: move I/O driver into runtime module (#​4942)
  • rt: rename internal scheduler types (#​4945)
Documented
  • chore: fix typos and grammar (#​4858, #​4894, #​4928)
  • io: fix typo in AsyncSeekExt::rewind docs (#​4893)
  • net: add documentation to try_read() for zero-length buffers (#​4937)
  • runtime: remove incorrect panic section for Builder::worker_threads (#​4849)
  • sync: doc of watch::Sender::send improved (#​4959)
  • task: add cancel safety docs to JoinHandle (#​4901)
  • task: expand on cancellation of spawn_blocking (#​4811)
  • time: clarify that the first tick of Interval::tick happens immediately (#​4951)
Unstable
  • rt: add unstable option to disable the LIFO slot (#​4936)
  • task: fix incorrect signature in Builder::spawn_on (#​4953)
  • task: make task::Builder::spawn* methods fallible (#​4823)

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