Enable single_use_lifetimes lint only on cfg(test)

Author: taiki-e

futures-channel/src/lib.rs

@@ -9,7 +9,8 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
 #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms, unreachable_pub)]
-#![warn(single_use_lifetimes)]
+// 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))))]

futures-core/src/lib.rs

@@ -5,7 +5,8 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
 #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms, unreachable_pub)]
-#![warn(single_use_lifetimes)]
+// 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))))]

futures-executor/src/lib.rs

@@ -6,7 +6,8 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
 #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms, unreachable_pub)]
-#![warn(single_use_lifetimes)]
+// 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))))]

futures-io/src/lib.rs

@@ -11,7 +11,8 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
 #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms, unreachable_pub)]
-#![warn(single_use_lifetimes)]
+// 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))))]

futures-select-macro/src/lib.rs

@@ -2,7 +2,8 @@
 
 #![recursion_limit="128"]
 #![warn(rust_2018_idioms, unreachable_pub)]
-#![warn(single_use_lifetimes)]
+// 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)]
 
 extern crate proc_macro;

futures-sink/src/lib.rs

@@ -5,7 +5,8 @@
 
 #![cfg_attr(not(feature = "std"), no_std)]
 #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms, unreachable_pub)]
-#![warn(single_use_lifetimes)]
+// 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))))]

futures-test/src/lib.rs

@@ -1,7 +1,8 @@
 //! Utilities to make testing [`Future`s](futures_core::Future) easier
 
 #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms, unreachable_pub)]
-#![warn(single_use_lifetimes)]
+// 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))))]

futures-util/src/lib.rs

@@ -7,7 +7,8 @@
 
 #![cfg_attr(not(feature = "std"), no_std)]
 #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms, unreachable_pub)]
-#![warn(single_use_lifetimes)]
+// 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))))]

futures/src/lib.rs

@@ -27,7 +27,8 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
 #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms, unreachable_pub)]
-#![warn(single_use_lifetimes)]
+// 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))))]