Upgrade rust/crates/futures-macro to 0.3.16

Test: make
Change-Id: Ia26acae326f682e13ada585079691623a5346244
diff --git a/.cargo_vcs_info.json b/.cargo_vcs_info.json
index ec6442e..99dc8b0 100644
--- a/.cargo_vcs_info.json
+++ b/.cargo_vcs_info.json
@@ -1,5 +1,5 @@
 {
   "git": {
-    "sha1": "fc080d153bc7bf00429ec5e2b91e2f21f2243846"
+    "sha1": "ab38fd29d3f84f8fc028fa7883e53dba423da0ee"
   }
 }
diff --git a/Android.bp b/Android.bp
index 5f12603..582da8a 100644
--- a/Android.bp
+++ b/Android.bp
@@ -54,7 +54,7 @@
 // dependent_library ["feature_list"]
 //   autocfg-1.0.1
 //   proc-macro-hack-0.5.19
-//   proc-macro2-1.0.26 "default,proc-macro"
+//   proc-macro2-1.0.28 "default,proc-macro"
 //   quote-1.0.9 "default,proc-macro"
-//   syn-1.0.72 "clone-impls,default,derive,full,parsing,printing,proc-macro,quote"
+//   syn-1.0.74 "clone-impls,default,derive,full,parsing,printing,proc-macro,quote"
 //   unicode-xid-0.2.2 "default"
diff --git a/Cargo.toml b/Cargo.toml
index fc6cfc8..7135483 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,17 +3,16 @@
 # When uploading crates to the registry Cargo will automatically
 # "normalize" Cargo.toml files for maximal compatibility
 # with all versions of Cargo and also rewrite `path` dependencies
-# to registry (e.g., crates.io) dependencies
+# to registry (e.g., crates.io) dependencies.
 #
-# If you believe there's an error in this file please file an
-# issue against the rust-lang/cargo repository. If you're
-# editing this file be aware that the upstream Cargo.toml
-# will likely look very different (and much more reasonable)
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
 
 [package]
 edition = "2018"
 name = "futures-macro"
-version = "0.3.15"
+version = "0.3.16"
 authors = ["Taylor Cramer <[email protected]>", "Taiki Endo <[email protected]>"]
 description = "The futures-rs procedural macro implementations.\n"
 homepage = "https://rust-lang.github.io/futures-rs"
diff --git a/Cargo.toml.orig b/Cargo.toml.orig
index 082faf1..1acd4a2 100644
--- a/Cargo.toml.orig
+++ b/Cargo.toml.orig
@@ -1,7 +1,7 @@
 [package]
 name = "futures-macro"
 edition = "2018"
-version = "0.3.15"
+version = "0.3.16"
 authors = ["Taylor Cramer <[email protected]>", "Taiki Endo <[email protected]>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-lang/futures-rs"
diff --git a/METADATA b/METADATA
index 8396e93..b9823d8 100644
--- a/METADATA
+++ b/METADATA
@@ -7,13 +7,13 @@
   }
   url {
     type: ARCHIVE
-    value: "https://static.crates.io/crates/futures-macro/futures-macro-0.3.15.crate"
+    value: "https://static.crates.io/crates/futures-macro/futures-macro-0.3.16.crate"
   }
-  version: "0.3.15"
+  version: "0.3.16"
   license_type: NOTICE
   last_upgrade_date {
     year: 2021
-    month: 5
-    day: 19
+    month: 8
+    day: 9
   }
 }
diff --git a/src/lib.rs b/src/lib.rs
index 8835de4..d1cbc3c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,11 +1,13 @@
 //! The futures-rs procedural macro implementations.
 
-#![recursion_limit = "128"]
-#![warn(rust_2018_idioms, unreachable_pub)]
-// It cannot be included in the published code because this lints have false positives in the minimum required version.
-#![cfg_attr(test, warn(single_use_lifetimes))]
-#![warn(clippy::all)]
-#![doc(test(attr(deny(warnings), allow(dead_code, unused_assignments, unused_variables))))]
+#![warn(rust_2018_idioms, single_use_lifetimes, unreachable_pub)]
+#![doc(test(
+    no_crate_inject,
+    attr(
+        deny(warnings, rust_2018_idioms, single_use_lifetimes),
+        allow(dead_code, unused_assignments, unused_variables)
+    )
+))]
 
 // Since https://github.com/rust-lang/cargo/pull/7700 `proc_macro` is part of the prelude for
 // proc-macro crates, but to support older compilers we still need this explicit `extern crate`.