From 2b21d1cb473fedbf7f7c7f794d969e892b84d071 Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Fri, 4 Dec 2015 14:47:40 +0100
Subject: [PATCH] StorageBackend::iter_files(): Add caused_by use

---
 src/storage/backend.rs | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/storage/backend.rs b/src/storage/backend.rs
index 16dd904a..998781e5 100644
--- a/src/storage/backend.rs
+++ b/src/storage/backend.rs
@@ -83,10 +83,11 @@ impl StorageBackend {
                         .into_iter())
             })
             .map_err(|e| {
-                let serr = StorageBackendError::new(
-                        "iter_files()",
-                        "Cannot iter on files",
-                        None);
+                debug!("StorageBackend::iter_ids() returned error = {:?}", e);
+                let mut serr = StorageBackendError::new("iter_files()",
+                                           "Cannot iter on files",
+                                           None);
+                serr.caused_by = Some(Box::new(e));
                 serr
             })
     }