From 9f4279fa80bfbf4169037b06d387a824729f578d Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Mon, 7 Oct 2024 21:25:19 +0200
Subject: [PATCH] Resolve some needless_lifetimes clippy lints

    warning: the following explicit lifetimes could be elided: 'a
      --> src/drops.rs:35:6
       |
    35 | impl<'a, T> TrivialDrop for slice::Iter<'a, T> {}
       |      ^^                                 ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
    help: elide the lifetimes
       |
    35 - impl<'a, T> TrivialDrop for slice::Iter<'a, T> {}
    35 + impl<T> TrivialDrop for slice::Iter<'_, T> {}
       |

    warning: the following explicit lifetimes could be elided: 'a
      --> src/drops.rs:36:6
       |
    36 | impl<'a, T> TrivialDrop for slice::IterMut<'a, T> {}
       |      ^^                                    ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
    help: elide the lifetimes
       |
    36 - impl<'a, T> TrivialDrop for slice::IterMut<'a, T> {}
    36 + impl<T> TrivialDrop for slice::IterMut<'_, T> {}
       |

    warning: the following explicit lifetimes could be elided: 'a
      --> src/drops.rs:37:6
       |
    37 | impl<'a, T> TrivialDrop for option::IntoIter<&'a T> {}
       |      ^^                                       ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
    help: elide the lifetimes
       |
    37 - impl<'a, T> TrivialDrop for option::IntoIter<&'a T> {}
    37 + impl<T> TrivialDrop for option::IntoIter<&T> {}
       |

    warning: the following explicit lifetimes could be elided: 'a
      --> src/drops.rs:38:6
       |
    38 | impl<'a, T> TrivialDrop for option::IntoIter<&'a mut T> {}
       |      ^^                                       ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
    help: elide the lifetimes
       |
    38 - impl<'a, T> TrivialDrop for option::IntoIter<&'a mut T> {}
    38 + impl<T> TrivialDrop for option::IntoIter<&mut T> {}
       |

    warning: the following explicit lifetimes could be elided: 'a
      --> tests/debug/mod.rs:85:6
       |
    85 | impl<'a, T> Debug for Lite<&'a T>
       |      ^^                     ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
       = note: `-W clippy::needless-lifetimes` implied by `-W clippy::all`
       = help: to override `-W clippy::all` add `#[allow(clippy::needless_lifetimes)]`
    help: elide the lifetimes
       |
    85 - impl<'a, T> Debug for Lite<&'a T>
    85 + impl<T> Debug for Lite<&T>
       |

    warning: the following explicit lifetimes could be elided: 'a
      --> tests/macros/mod.rs:82:6
       |
    82 | impl<'a> TryIntoTokens for &'a str {
       |      ^^                     ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
    help: elide the lifetimes
       |
    82 - impl<'a> TryIntoTokens for &'a str {
    82 + impl TryIntoTokens for &str {
       |
---
 src/drops.rs        | 8 ++++----
 tests/debug/mod.rs  | 2 +-
 tests/macros/mod.rs | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/drops.rs b/src/drops.rs
index 89b42d82ef..c54308f02c 100644
--- a/src/drops.rs
+++ b/src/drops.rs
@@ -32,10 +32,10 @@ impl<T: ?Sized> DerefMut for NoDrop<T> {
 pub(crate) trait TrivialDrop {}
 
 impl<T> TrivialDrop for iter::Empty<T> {}
-impl<'a, T> TrivialDrop for slice::Iter<'a, T> {}
-impl<'a, T> TrivialDrop for slice::IterMut<'a, T> {}
-impl<'a, T> TrivialDrop for option::IntoIter<&'a T> {}
-impl<'a, T> TrivialDrop for option::IntoIter<&'a mut T> {}
+impl<T> TrivialDrop for slice::Iter<'_, T> {}
+impl<T> TrivialDrop for slice::IterMut<'_, T> {}
+impl<T> TrivialDrop for option::IntoIter<&T> {}
+impl<T> TrivialDrop for option::IntoIter<&mut T> {}
 
 #[test]
 fn test_needs_drop() {
diff --git a/tests/debug/mod.rs b/tests/debug/mod.rs
index c9925a6d5c..7ab2b795d5 100644
--- a/tests/debug/mod.rs
+++ b/tests/debug/mod.rs
@@ -82,7 +82,7 @@ impl Debug for Lite<TokenStream> {
     }
 }
 
-impl<'a, T> Debug for Lite<&'a T>
+impl<T> Debug for Lite<&T>
 where
     Lite<T>: Debug,
 {
diff --git a/tests/macros/mod.rs b/tests/macros/mod.rs
index 1c1bacf459..024075c046 100644
--- a/tests/macros/mod.rs
+++ b/tests/macros/mod.rs
@@ -79,7 +79,7 @@ pub trait TryIntoTokens {
     fn try_into_tokens(self) -> Result<proc_macro2::TokenStream>;
 }
 
-impl<'a> TryIntoTokens for &'a str {
+impl TryIntoTokens for &str {
     fn try_into_tokens(self) -> Result<proc_macro2::TokenStream> {
         let tokens = proc_macro2::TokenStream::from_str(self)?;
         Ok(tokens)