From 8e4ef1ab2a20d65047b1dd3f8ce671f42dc52fa7 Mon Sep 17 00:00:00 2001
From: Dirkjan Ochtman <dirkjan@ochtman.nl>
Date: Wed, 27 Jul 2022 14:30:50 +0200
Subject: [PATCH] Implement std::error::Error for ParseWeekdayError

---
 src/weekday.rs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/weekday.rs b/src/weekday.rs
index 58f61f2fcb..a252cf352d 100644
--- a/src/weekday.rs
+++ b/src/weekday.rs
@@ -191,9 +191,18 @@ pub struct ParseWeekdayError {
     pub(crate) _dummy: (),
 }
 
+#[cfg(feature = "std")]
+impl std::error::Error for ParseWeekdayError {}
+
+impl fmt::Display for ParseWeekdayError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.write_fmt(format_args!("{:?}", self))
+    }
+}
+
 impl fmt::Debug for ParseWeekdayError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "ParseWeekdayError {{ .. }}")
+        f.debug_struct("ParseWeekdayError").finish_non_exhaustive()
     }
 }