Add rust-version field to Cargo.toml

https://doc.rust-lang.org/cargo/reference/manifest.html#the-rust-version-field

Author: taiki-e

Diff for: .github/workflows/ci.yml

@@ -61,7 +61,7 @@ jobs:
       matrix:
         rust:
           # This is the minimum Rust version supported by futures-core, futures-io, futures-sink, futures-task.
-          # When updating this, the reminder to update the minimum required version in README.md and .clippy.toml.
+          # When updating this, the reminder to update the minimum required version in README.md, Cargo.toml, and .clippy.toml.
           - 1.36
     runs-on: ubuntu-latest
     steps:
@@ -92,7 +92,7 @@ jobs:
       matrix:
         rust:
           # This is the minimum Rust version supported by futures, futures-util, futures-macro, futures-executor, futures-channel, futures-test.
-          # When updating this, the reminder to update the minimum required version in README.md.
+          # When updating this, the reminder to update the minimum required version in README.md and Cargo.toml.
           - 1.45
     runs-on: ubuntu-latest
     steps:

Diff for: futures-channel/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "futures-channel"
-edition = "2018"
 version = "0.3.17"
+edition = "2018"
+rust-version = "1.45"
 authors = ["Alex Crichton <[email protected]>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"

Diff for: futures-core/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "futures-core"
-edition = "2018"
 version = "0.3.17"
+edition = "2018"
+rust-version = "1.36"
 authors = ["Alex Crichton <[email protected]>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"

Diff for: futures-executor/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "futures-executor"
-edition = "2018"
 version = "0.3.17"
+edition = "2018"
+rust-version = "1.45"
 authors = ["Alex Crichton <[email protected]>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"

Diff for: futures-io/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "futures-io"
-edition = "2018"
 version = "0.3.17"
+edition = "2018"
+rust-version = "1.36"
 authors = ["Alex Crichton <[email protected]>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"

Diff for: futures-macro/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "futures-macro"
-edition = "2018"
 version = "0.3.17"
+edition = "2018"
+rust-version = "1.45"
 authors = ["Taylor Cramer <[email protected]>", "Taiki Endo <[email protected]>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"

Diff for: futures-sink/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "futures-sink"
-edition = "2018"
 version = "0.3.17"
+edition = "2018"
+rust-version = "1.36"
 authors = ["Alex Crichton <[email protected]>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"

Diff for: futures-task/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "futures-task"
-edition = "2018"
 version = "0.3.17"
+edition = "2018"
+rust-version = "1.36"
 authors = ["Alex Crichton <[email protected]>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"

Diff for: futures-test/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "futures-test"
-edition = "2018"
 version = "0.3.17"
+edition = "2018"
+rust-version = "1.45"
 authors = ["Wim Looman <[email protected]>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"

Diff for: futures-util/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "futures-util"
-edition = "2018"
 version = "0.3.17"
+edition = "2018"
+rust-version = "1.45"
 authors = ["Alex Crichton <[email protected]>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"

Diff for: futures/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "futures"
-edition = "2018"
 version = "0.3.17"
+edition = "2018"
+rust-version = "1.45"
 authors = ["Alex Crichton <[email protected]>"]
 license = "MIT OR Apache-2.0"
 readme = "../README.md"