From 66b0ec96b9ab6b8d15b8663e8f95d693c4ce7dcf Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Thu, 24 Nov 2022 12:30:40 +0200
Subject: add error chain

Sponsored-by: author
---
 src/main.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main.rs b/src/main.rs
index ceb34da..71a3709 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,13 @@
+use std::error::Error;
+
 fn main() {
     if let Err(e) = fallible_main() {
         eprintln!("ERROR: {}", e);
+        let mut err = e.source();
+        while let Some(underlying) = err {
+            eprintln!("caused by: {}", underlying);
+            err = underlying.source();
+        }
     }
 }
 
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