From 1af20cc4409a6eae6f07d2d29f8c802f81684752 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Mon, 7 Mar 2022 12:42:26 -0800
Subject: [PATCH] Add must_use to Error constructors

---
 src/error.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/error.rs b/src/error.rs
index 441b61c..0971146 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -26,6 +26,7 @@ impl Error {
     #[cfg(feature = "std")]
     #[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
     #[cold]
+    #[must_use]
     pub fn new<E>(error: E) -> Self
     where
         E: StdError + Send + Sync + 'static,
@@ -72,6 +73,7 @@ impl Error {
     /// }
     /// ```
     #[cold]
+    #[must_use]
     pub fn msg<M>(message: M) -> Self
     where
         M: Display + Debug + Send + Sync + 'static,
@@ -293,6 +295,7 @@ impl Error {
     /// }
     /// ```
     #[cold]
+    #[must_use]
     pub fn context<C>(self, context: C) -> Self
     where
         C: Display + Send + Sync + 'static,