error: Consistently use Display instead of error description()

The description method is deprecated and its signature forces less
helpful error messages than what Display can provide.

BUG=none
TEST=cargo check --all-features
TEST=cargo check --target aarch64-unknown-linux-gnu

Change-Id: I27fc99d59d0ef457c5273dc53e4c563ef439c2c0
Reviewed-on: https://chromium-review.googlesource.com/1497735
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Dylan Reid <dgreid@chromium.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/data_model/src/volatile_memory.rs b/data_model/src/volatile_memory.rs
index 450d92e..5a2c80a 100644
--- a/data_model/src/volatile_memory.rs
+++ b/data_model/src/volatile_memory.rs
@@ -20,7 +20,7 @@
 //! not reordered or elided the access.
 
 use std::cmp::min;
-use std::fmt;
+use std::fmt::{self, Display};
 use std::io::Result as IoResult;
 use std::io::{Read, Write};
 use std::marker::PhantomData;
@@ -41,13 +41,13 @@ pub enum VolatileMemoryError {
     Overflow { base: u64, offset: u64 },
 }
 
-impl fmt::Display for VolatileMemoryError {
+impl Display for VolatileMemoryError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        use self::VolatileMemoryError::*;
+
         match self {
-            VolatileMemoryError::OutOfBounds { addr } => {
-                write!(f, "address 0x{:x} is out of bounds", addr)
-            }
-            VolatileMemoryError::Overflow { base, offset } => write!(
+            OutOfBounds { addr } => write!(f, "address 0x{:x} is out of bounds", addr),
+            Overflow { base, offset } => write!(
                 f,
                 "address 0x{:x} offset by 0x{:x} would overflow",
                 base, offset