From 29c96a75e33e0a62f32c35c1ac9ead8778f26f31 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20S=C3=A1=20de=20Mello?= <codasm@pm.me>
Date: Mon, 17 Feb 2025 20:59:34 +0000
Subject: [PATCH 1/2] seal the `Diagnose` trait

---
 src/diagnostic.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/diagnostic.rs b/src/diagnostic.rs
index 71d4643..d3e6943 100644
--- a/src/diagnostic.rs
+++ b/src/diagnostic.rs
@@ -163,7 +163,7 @@ pub(crate) use diagnostic_url;
 /// An extension trait for `Result<_, E>`, where `E` is an implementation of
 /// [`Diagnostic`], that converts `E` into [`Report<E>`](`Report`), yielding
 /// `Result<_, Report<E>>`.
-pub trait Diagnose<'s, T> {
+pub trait Diagnose<'s, T>: private::Sealed {
     /// The error type returned from `diagnose` and `diagnose_with`.
     type Error: Diagnostic;
 
@@ -224,6 +224,11 @@ where
     }
 }
 
+mod private {
+    pub trait Sealed {}
+    impl<T, E> Sealed for Result<T, E> {}
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

From 726dc161e268713015e51214b9bd922d52951432 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20S=C3=A1=20de=20Mello?= <codasm@pm.me>
Date: Sun, 23 Feb 2025 21:58:24 +0000
Subject: [PATCH 2/2] changelog

---
 CHANGELOG.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 15dd2c6..c9c2aaa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Fixed
+
+-   Sealed the `Diagnose` trait.
+
 ## [0.7.1] 2025-02-16
 
 ### Changed