better debug messages

Signed-off-by: Connor Tsui <[email protected]>

Author: connortsui20

library/std/src/sync/oneshot.rs

@@ -399,16 +399,16 @@ pub enum RecvTimeoutError<T> {
 #[unstable(feature = "oneshot_channel", issue = "143674")]
 impl<T> fmt::Debug for TryRecvError<T> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        "TryRecvError(..)".fmt(f)
+        "oneshot::TryRecvError(..)".fmt(f)
     }
 }
 
 #[unstable(feature = "oneshot_channel", issue = "143674")]
 impl<T> fmt::Display for TryRecvError<T> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match *self {
-            TryRecvError::Empty(..) => "receiving on an empty channel".fmt(f),
-            TryRecvError::Disconnected => "receiving on a closed channel".fmt(f),
+            TryRecvError::Empty(..) => "receiving on an empty oneshot channel".fmt(f),
+            TryRecvError::Disconnected => "receiving on a closed oneshot channel".fmt(f),
         }
     }
 }
@@ -433,16 +433,16 @@ impl<T> From<RecvError> for TryRecvError<T> {
 #[unstable(feature = "oneshot_channel", issue = "143674")]
 impl<T> fmt::Debug for RecvTimeoutError<T> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        "RecvTimeoutError(..)".fmt(f)
+        "oneshot::RecvTimeoutError(..)".fmt(f)
     }
 }
 
 #[unstable(feature = "oneshot_channel", issue = "143674")]
 impl<T> fmt::Display for RecvTimeoutError<T> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match *self {
-            RecvTimeoutError::Timeout(..) => "timed out waiting on channel".fmt(f),
-            RecvTimeoutError::Disconnected => "receiving on a closed channel".fmt(f),
+            RecvTimeoutError::Timeout(..) => "timed out waiting on oneshot channel".fmt(f),
+            RecvTimeoutError::Disconnected => "receiving on a closed oneshot channel".fmt(f),
         }
     }
 }