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Bump tokio from 1.20.1 to 1.22.0

Ghost User requested to merge dependabot-cargo-tokio-1.22.0 into master

Bumps tokio from 1.20.1 to 1.22.0.

Release notes

Sourced from tokio's releases.

Tokio v1.22.0

Added

  • runtime: add Handle::runtime_flavor (#5138)
  • sync: add Mutex::blocking_lock_owned (#5130)
  • sync: add Semaphore::MAX_PERMITS (#5144)
  • sync: add merge() to semaphore permits (#4948)
  • sync: add mpsc::WeakUnboundedSender (#5189)

Added (unstable)

  • process: add Command::process_group (#5114)
  • runtime: export metrics about the blocking thread pool (#5161)
  • task: add task::id() and task::try_id() (#5171)

Fixed

  • macros: don't take ownership of futures in macros (#5087)
  • runtime: fix Stacked Borrows violation in LocalOwnedTasks (#5099)
  • runtime: mitigate ABA with 32-bit queue indices when possible (#5042)
  • task: wake local tasks to the local queue when woken by the same thread (#5095)
  • time: panic in release mode when mark_pending called illegally (#5093)
  • runtime: fix typo in expect message (#5169)
  • runtime: fix unsync_load on atomic types (#5175)
  • task: elaborate safety comments in task deallocation (#5172)
  • runtime: fix LocalSet drop in thread local (#5179)
  • net: remove libc type leakage in a public API (#5191)
  • runtime: update the alignment of CachePadded (#5106)

Changed

  • io: make tokio::io::copy continue filling the buffer when writer stalls (#5066)
  • runtime: remove coop::budget from LocalSet::run_until (#5155)
  • sync: make Notify panic safe (#5154)

Documented

  • io: fix doc for write_i8 to use signed integers (#5040)
  • net: fix doc typos for TCP and UDP set_tos methods (#5073)
  • net: fix function name in UdpSocket::recv documentation (#5150)
  • sync: typo in TryLockError for RwLock::try_write (#5160)
  • task: document that spawned tasks execute immediately (#5117)
  • time: document return type of timeout (#5118)
  • time: document that timeout checks only before poll (#5126)
  • sync: specify return type of oneshot::Receiver in docs (#5198)

Internal changes

  • runtime: use const Mutex::new for globals (#5061)
  • runtime: remove Option around mio::Events in io driver (#5078)
  • runtime: remove a conditional compilation clause (#5104)
  • runtime: remove a reference to internal time handle (#5107)
  • runtime: misc time driver cleanup (#5120)
  • runtime: move signal driver to runtime module (#5121)
  • runtime: signal driver now uses I/O driver directly (#5125)

... (truncated)

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