From 7ee04620f6dfce69ed888d362851d093a64c28ec Mon Sep 17 00:00:00 2001
From: Josh Mitchell <yoshanuikabundi@gmail.com>
Date: Tue, 10 Nov 2020 20:11:15 +1100
Subject: [PATCH] Error::task() now checks sources

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

diff --git a/src/errors.rs b/src/errors.rs
index c03a07a..cf5d1cd 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -43,8 +43,11 @@ impl Error {
 
     /// Get the task being attempted when the C API returned an error, if any
     pub fn task(&self) -> Option<ErrorTask> {
+        use std::error::Error as _;
         if let Error::CApiError { task, .. } = self {
             Some(*task)
+        } else if let Some(e) = self.source() {
+            e.downcast_ref::<Self>().and_then(Self::task)
         } else {
             None
         }