Auto merge of #65388 - Centril:rollup-rhg0dvs, r=Centril

Rollup of 10 pull requests

Successful merges:

 - #65214 (Split non-CAS atomic support off into target_has_atomic_load_store)
 - #65246 (vxWorks: implement get_path() and get_mode() for File fmt::Debug)
 - #65312 (improve performance of signed saturating_mul)
 - #65336 (Fix typo in task::Waker)
 - #65346 (nounwind tests and cleanup)
 - #65347 (Fix #[unwind(abort)] with Rust ABI)
 - #65366 (Implement Error::source on IntoStringError + Remove superfluous cause impls)
 - #65369 (Don't discard value names when using address or memory sanitizer)
 - #65370 (Add `dyn` to `Any` documentation)
 - #65373 (Fix typo in docs for `Rc`)

Failed merges:

r? @ghost

1 files changed, 0 insertions, 20 deletions

diff --git a/src/libstd/sync/mpsc/mod.rs b/src/libstd/sync/mpsc/mod.rs
index 69ecd201063..c2884a28f3c 100644
--- a/src/libstd/sync/mpsc/mod.rs
+++ b/src/libstd/sync/mpsc/mod.rs
@@ -1581,10 +1581,6 @@ impl<T: Send> error::Error for SendError<T> {
     fn description(&self) -> &str {
         "sending on a closed channel"
     }
-
-    fn cause(&self) -> Option<&dyn error::Error> {
-        None
-    }
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -1624,10 +1620,6 @@ impl<T: Send> error::Error for TrySendError<T> {
             }
         }
     }
-
-    fn cause(&self) -> Option<&dyn error::Error> {
-        None
-    }
 }
 
 #[stable(feature = "mpsc_error_conversions", since = "1.24.0")]
@@ -1652,10 +1644,6 @@ impl error::Error for RecvError {
     fn description(&self) -> &str {
         "receiving on a closed channel"
     }
-
-    fn cause(&self) -> Option<&dyn error::Error> {
-        None
-    }
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -1685,10 +1673,6 @@ impl error::Error for TryRecvError {
             }
         }
     }
-
-    fn cause(&self) -> Option<&dyn error::Error> {
-        None
-    }
 }
 
 #[stable(feature = "mpsc_error_conversions", since = "1.24.0")]
@@ -1726,10 +1710,6 @@ impl error::Error for RecvTimeoutError {
             }
         }
     }
-
-    fn cause(&self) -> Option<&dyn error::Error> {
-        None
-    }
 }
 
 #[stable(feature = "mpsc_error_conversions", since = "1.24.0")]