Update futures-channel to 0.3.21

Test: cd external/rust/crates && atest --host -c
Change-Id: I9c1e17e5ea84d783817d5e69955f4c685e005721

1 files changed, 17 insertions, 8 deletions

diff --git a/Cargo.toml b/Cargo.toml
index bea8d51..d0a13f6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,23 +11,29 @@
 
 [package]
 edition = "2018"
+rust-version = "1.45"
 name = "futures-channel"
-version = "0.3.17"
-authors = ["Alex Crichton <alex@alexcrichton.com>"]
-description = "Channels for asynchronous communication using futures-rs.\n"
+version = "0.3.21"
+description = """
+Channels for asynchronous communication using futures-rs.
+"""
 homepage = "https://rust-lang.github.io/futures-rs"
-documentation = "https://docs.rs/futures-channel/0.3"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"
+
 [package.metadata.docs.rs]
 all-features = true
-rustdoc-args = ["--cfg", "docsrs"]
+rustdoc-args = [
+    "--cfg",
+    "docsrs",
+]
+
 [dependencies.futures-core]
-version = "0.3.17"
+version = "0.3.21"
 default-features = false
 
 [dependencies.futures-sink]
-version = "0.3.17"
+version = "0.3.21"
 optional = true
 default-features = false
 
@@ -38,5 +44,8 @@ alloc = ["futures-core/alloc"]
 cfg-target-has-atomic = []
 default = ["std"]
 sink = ["futures-sink"]
-std = ["alloc", "futures-core/std"]
+std = [
+    "alloc",
+    "futures-core/std",
+]
 unstable = []