From 64241eef367dd6989b85951b20527926b49473c6 Mon Sep 17 00:00:00 2001
From: Taiki Endo <te316e89@gmail.com>
Date: Tue, 5 Jan 2021 20:25:50 +0900
Subject: [PATCH] Allow unused_variables lint in doctests

---
 core/src/lib.rs   | 5 ++++-
 derive/src/lib.rs | 5 ++++-
 src/lib.rs        | 7 +++++--
 tests/doc/lib.rs  | 5 ++++-
 4 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/core/src/lib.rs b/core/src/lib.rs
index e5a9da20..2c542ddd 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -2,7 +2,10 @@
 
 #![doc(test(
     no_crate_inject,
-    attr(deny(warnings, rust_2018_idioms, single_use_lifetimes), allow(dead_code))
+    attr(
+        deny(warnings, rust_2018_idioms, single_use_lifetimes),
+        allow(dead_code, unused_variables)
+    )
 ))]
 #![forbid(unsafe_code)]
 #![warn(future_incompatible, rust_2018_idioms, unreachable_pub)]
diff --git a/derive/src/lib.rs b/derive/src/lib.rs
index 85ef6f4b..36244348 100644
--- a/derive/src/lib.rs
+++ b/derive/src/lib.rs
@@ -2,7 +2,10 @@
 
 #![doc(test(
     no_crate_inject,
-    attr(deny(warnings, rust_2018_idioms, single_use_lifetimes), allow(dead_code))
+    attr(
+        deny(warnings, rust_2018_idioms, single_use_lifetimes),
+        allow(dead_code, unused_variables)
+    )
 ))]
 #![forbid(unsafe_code)]
 #![warn(future_incompatible, rust_2018_idioms, single_use_lifetimes, unreachable_pub)]
diff --git a/src/lib.rs b/src/lib.rs
index 54a64828..307bbb72 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -822,7 +822,7 @@
 //! fn func2(x: i32) {
 //!     // Unlike `feature(impl_trait_in_bindings)`, this works on stable compilers.
 //!     #[auto_enum]
-//!     let _iter: impl Iterator<Item = i32> = match x {
+//!     let iter: impl Iterator<Item = i32> = match x {
 //!         0 => Some(0).into_iter(),
 //!         _ => 0..x,
 //!     };
@@ -853,7 +853,10 @@
 #![no_std]
 #![doc(test(
     no_crate_inject,
-    attr(deny(warnings, rust_2018_idioms, single_use_lifetimes), allow(dead_code))
+    attr(
+        deny(warnings, rust_2018_idioms, single_use_lifetimes),
+        allow(dead_code, unused_variables)
+    )
 ))]
 #![forbid(unsafe_code)]
 #![warn(future_incompatible, rust_2018_idioms, single_use_lifetimes, unreachable_pub)]
diff --git a/tests/doc/lib.rs b/tests/doc/lib.rs
index 74067ccf..e8d86dcb 100644
--- a/tests/doc/lib.rs
+++ b/tests/doc/lib.rs
@@ -1,7 +1,10 @@
 #![cfg(nightly)]
 #![doc(test(
     no_crate_inject,
-    attr(deny(warnings, rust_2018_idioms, single_use_lifetimes), allow(dead_code))
+    attr(
+        deny(warnings, rust_2018_idioms, single_use_lifetimes),
+        allow(dead_code, unused_variables)
+    )
 ))]
 #![cfg_attr(doctest, feature(external_doc))]