chore: prepare Tokio v1.17.0 release (#4504)

# 1.17.0 (February 16, 2022)

This release updates the minimum supported Rust version (MSRV) to 1.49,
the `mio` dependency to v0.8, and the (optional) `parking_lot`
dependency to v0.12. Additionally, it contains several bug fixes, as
well as internal refactoring and performance improvements.

### Fixed

- time: prevent panicking in `sleep` with large durations ([#4495])
- time: eliminate potential panics in `Instant` arithmetic on platforms
  where `Instant::now` is not monotonic ([#4461])
- io: fix `DuplexStream` not participating in cooperative yielding
  ([#4478])
- rt: fix potential double panic when dropping a `JoinHandle` ([#4430])

### Changed

- update minimum supported Rust version to 1.49 ([#4457])
- update `parking_lot` dependency to v0.12.0 ([#4459])
- update `mio` dependency to v0.8 ([#4449])
- rt: remove an unnecessary lock in the blocking pool ([#4436])
- rt: remove an unnecessary enum in the basic scheduler ([#4462])
- time: use bit manipulation instead of modulo to improve performance
  ([#4480])
- net: use `std::future::Ready` instead of our own `Ready` future
  ([#4271])
- replace deprecated `atomic::spin_loop_hint` with `hint::spin_loop`
  ([#4491])
- fix miri failures in intrusive linked lists ([#4397])

### Documented

- io: add an example for `tokio::process::ChildStdin` ([#4479])

### Unstable

The following changes only apply when building with `--cfg
tokio_unstable`:

- task: fix missing location information in `tracing` spans generated by
  `spawn_local` ([#4483])
- task: add `JoinSet` for managing sets of tasks ([#4335])
- metrics: fix compilation error on MIPS ([#4475])
- metrics: fix compilation error on arm32v7 ([#4453])

[#4495]: #4495
[#4461]: #4461
[#4478]: #4478
[#4430]: #4430
[#4457]: #4457
[#4459]: #4459
[#4449]: #4449
[#4462]: #4462
[#4436]: #4436
[#4480]: #4480
[#4271]: #4271
[#4491]: #4491
[#4397]: #4397
[#4479]: #4479
[#4483]: #4483
[#4335]: #4335
[#4475]: #4475
[#4453]: #4453

README.md

@@ -56,7 +56,7 @@ Make sure you activated the full features of the tokio crate on Cargo.toml:
 
 ```toml
 [dependencies]
-tokio = { version = "1.16.1", features = ["full"] }
+tokio = { version = "1.17.0", features = ["full"] }
 ```
 Then, on your main.rs:
 

tokio/CHANGELOG.md

@@ -1,3 +1,63 @@
+# 1.17.0 (February 16, 2022)
+
+This release updates the minimum supported Rust version (MSRV) to 1.49, the
+`mio` dependency to v0.8, and the (optional) `parking_lot` dependency to v0.12.
+Additionally, it contains several bug fixes, as well as internal refactoring and
+performance improvements.
+
+### Fixed
+
+- time: prevent panicking in `sleep` with large durations ([#4495])
+- time: eliminate potential panics in `Instant` arithmetic on platforms where
+  `Instant::now` is not monotonic ([#4461])
+- io: fix `DuplexStream` not participating in cooperative yielding ([#4478])
+- rt: fix potential double panic when dropping a `JoinHandle` ([#4430])
+
+### Changed
+
+- update minimum supported Rust version to 1.49 ([#4457])
+- update `parking_lot` dependency to v0.12.0 ([#4459])
+- update `mio` dependency to v0.8 ([#4449])
+- rt: remove an unnecessary lock in the blocking pool ([#4436])
+- rt: remove an unnecessary enum in the basic scheduler ([#4462])
+- time: use bit manipulation instead of modulo to improve performance ([#4480])
+- net: use `std::future::Ready` instead of our own `Ready` future ([#4271])
+- replace deprecated `atomic::spin_loop_hint` with `hint::spin_loop` ([#4491])
+- fix miri failures in intrusive linked lists ([#4397]) 
+
+### Documented
+
+- io: add an example for `tokio::process::ChildStdin` ([#4479])
+
+### Unstable
+
+The following changes only apply when building with `--cfg tokio_unstable`:
+
+- task: fix missing location information in `tracing` spans generated by
+  `spawn_local` ([#4483])
+- task: add `JoinSet` for managing sets of tasks ([#4335])
+- metrics: fix compilation error on MIPS ([#4475])
+- metrics: fix compilation error on arm32v7 ([#4453])
+
+[#4495]: https://github.com/tokio-rs/tokio/pull/4495
+[#4461]: https://github.com/tokio-rs/tokio/pull/4461
+[#4478]: https://github.com/tokio-rs/tokio/pull/4478
+[#4430]: https://github.com/tokio-rs/tokio/pull/4430
+[#4457]: https://github.com/tokio-rs/tokio/pull/4457
+[#4459]: https://github.com/tokio-rs/tokio/pull/4459
+[#4449]: https://github.com/tokio-rs/tokio/pull/4449
+[#4462]: https://github.com/tokio-rs/tokio/pull/4462
+[#4436]: https://github.com/tokio-rs/tokio/pull/4436
+[#4480]: https://github.com/tokio-rs/tokio/pull/4480
+[#4271]: https://github.com/tokio-rs/tokio/pull/4271
+[#4491]: https://github.com/tokio-rs/tokio/pull/4491
+[#4397]: https://github.com/tokio-rs/tokio/pull/4397
+[#4479]: https://github.com/tokio-rs/tokio/pull/4479
+[#4483]: https://github.com/tokio-rs/tokio/pull/4483
+[#4335]: https://github.com/tokio-rs/tokio/pull/4335
+[#4475]: https://github.com/tokio-rs/tokio/pull/4475
+[#4453]: https://github.com/tokio-rs/tokio/pull/4453
+
 # 1.16.1 (January 28, 2022)
 
 This release fixes a bug in [#4428] with the change [#4437].

tokio/Cargo.toml

@@ -6,7 +6,7 @@ name = "tokio"
 #   - README.md
 # - Update CHANGELOG.md.
 # - Create "v1.0.x" git tag.
-version = "1.16.1"
+version = "1.17.0"
 edition = "2018"
 rust-version = "1.49"
 authors = ["Tokio Contributors <team@tokio.rs>"]

tokio/README.md

@@ -56,7 +56,7 @@ Make sure you activated the full features of the tokio crate on Cargo.toml:
 
 ```toml
 [dependencies]
-tokio = { version = "1.16.1", features = ["full"] }
+tokio = { version = "1.17.0", features = ["full"] }
 ```
 Then, on your main.rs: