Bump tokio from 1.15.0 to 1.16.1

[dependabot]

Bumps tokio from 1.15.0 to 1.16.1.

Release notes

Sourced from tokio's releases.

Tokio v1.16.1

1.16.1 (January 28, 2022)

This release fixes a bug in #4428 with the change #4437.

#4428: tokio-rs/tokio#4428 #4437: tokio-rs/tokio#4437

Tokio v1.16.0

Fixes a soundness bug in io::Take (#4428). The unsoundness is exposed when leaking memory in the given AsyncRead implementation and then overwriting the supplied buffer:

impl AsyncRead for Buggy {
    fn poll_read(
        self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        buf: &mut ReadBuf<'_>
    ) -> Poll<Result<()>> {
      let new_buf = vec![0; 5].leak();
      *buf = ReadBuf::new(new_buf);
      buf.put_slice(b"hello");
      Poll::Ready(Ok(()))
    }
}

Also, this release includes improvements to the multi-threaded scheduler that can increase throughput by up to 20% in some cases (#4383).

Fixed

• io: soundness don't expose uninitialized memory when using io::Take in edge case (#4428)
• fs: ensure File::write results in a write syscall when the runtime shuts down (#4316)
• process: drop pipe after child exits in wait_with_output (#4315)
• rt: improve error message when spawning a thread fails (#4398)
• rt: reduce false-positive thread wakups in the multi-threaded scheduler (#4383)
• sync: don't inherit Send from parking_lot::*Guard (#4359)

Added

• net: TcpSocket::linger() and set_linger() (#4324)
• net: impl UnwindSafe for socket types (#4384)
• rt: impl UnwindSafe for JoinHandle (#4418)
• sync: watch::Receiver::has_changed() (#4342)
• sync: oneshot::Receiver::blocking_recv() (#4334)
• sync: RwLock blocking operations (#4425)

Unstable

... (truncated)

Commits

• 91b9850 chore: prepare Tokio v1.16.1 release (#4438)
• 3c46705 io: fix take pointer check (#4437)
• afd2189 chore: prepare Tokio v1.16 release (#4431)
• 986b88b chore: update year in LICENSE files (#4429)
• 257053e util: add spawn_pinned (#3370)
• 5af9e0d sync: add blocking lock methods to RwLock (#4425)
• 8f77ee8 net: add generic trait to combine UnixListener and TcpListener (#4385)
• 2747043 tests: enable running wasm32-unknown-unknown tests (#4421)
• 2a5071f feat: implement Framed::map_codec (#4427)
• 621790e io: fix take when using evil reader (#4428)
• Additional commits viewable in compare view

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[coveralls]

Pull Request Test Coverage Report for Build 1777866925

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 38.764%

---

Totals
Change from base Build 1643721144:	0.0%
Covered Lines:	196
Relevant Lines:	360

---

💛 - Coveralls

[dependabot]

Superseded by #20.

[coveralls]

Pull Request Test Coverage Report for Build 1777866925

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 38.764%

---

Totals
Change from base Build 1643721144:	0.0%
Covered Lines:	196
Relevant Lines:	360

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 1777866925

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 38.764%

---

Totals
Change from base Build 1643721144:	0.0%
Covered Lines:	196
Relevant Lines:	360

---

💛 - Coveralls