From 69d48c4be7ceac92a1bcf5570a1bc8696cede279 Mon Sep 17 00:00:00 2001
From: Paolo Barbolini <paolo@paolo565.org>
Date: Mon, 31 Aug 2020 18:28:43 +0200
Subject: [PATCH] Don't require Transport::{Ok, Error} to inherit specific
 traits

---
 src/lib.rs | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index ffbf098..2a97576 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -59,7 +59,6 @@ pub use crate::{address::Address, transport::stub::StubTransport};
 use async_trait::async_trait;
 #[cfg(feature = "builder")]
 use std::convert::TryFrom;
-use std::{error::Error as StdError, fmt};
 
 /// Simple email envelope representation
 ///
@@ -139,9 +138,10 @@ impl TryFrom<&Headers> for Envelope {
 
 /// Blocking Transport method for emails
 pub trait Transport {
-    /// Result types for the transport
-    type Ok: fmt::Debug;
-    type Error: StdError;
+    /// Response produced by the Transport
+    type Ok;
+    /// Error produced by the Transport
+    type Error;
 
     /// Sends the email
     #[cfg(feature = "builder")]
@@ -157,9 +157,10 @@ pub trait Transport {
 #[cfg(feature = "async-std1")]
 #[async_trait]
 pub trait AsyncStd1Transport {
-    /// Result types for the transport
-    type Ok: fmt::Debug;
-    type Error: StdError;
+    /// Response produced by the Transport
+    type Ok;
+    /// Error produced by the Transport
+    type Error;
 
     /// Sends the email
     #[cfg(feature = "builder")]
@@ -177,9 +178,10 @@ pub trait AsyncStd1Transport {
 #[cfg(feature = "tokio02")]
 #[async_trait]
 pub trait Tokio02Transport {
-    /// Result types for the transport
-    type Ok: fmt::Debug;
-    type Error: StdError;
+    /// Response produced by the Transport
+    type Ok;
+    /// Error produced by the Transport
+    type Error;
 
     /// Sends the email
     #[cfg(feature = "builder")]