update std::error::Error impl for notmuch::Error

1 files changed, 6 insertions, 18 deletions

diff --git a/notmuch/src/error.rs b/notmuch/src/error.rs
index 64d0716..701bc78 100644
--- a/notmuch/src/error.rs
+++ b/notmuch/src/error.rs
@@ -1,5 +1,5 @@
 use std;
-use std::{error, fmt, io, result};
+use std::{fmt, io, result};
 
 use ffi;
 
@@ -12,26 +12,14 @@ pub enum Error {
     UnspecifiedError,
 }
 
+impl std::error::Error for Error {}
+
 impl fmt::Display for Error {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "{}", error::Error::description(self))
-    }
-}
-
-impl std::error::Error for Error {
-    fn description(&self) -> &str {
         match self {
-            Error::IoError(e) => error::Error::description(e),
-            Error::NotmuchError(e) => e.description(),
-            Error::UnspecifiedError => "Generic notmuch error",
-        }
-    }
-
-    fn cause(&self) -> Option<&dyn error::Error> {
-        match *self {
-            Error::IoError(ref e) => Some(e),
-            Error::NotmuchError(ref e) => Some(e),
-            Error::UnspecifiedError => None,
+            Error::IoError(e) => write!(f, "IO error: {}", e),
+            Error::NotmuchError(e) => write!(f, "notmuch error: {}", e),
+            Error::UnspecifiedError => write!(f, "unspecified error"),
         }
     }
 }