Update to the rustfmt in rust 1.31, which is now stable.

lib/faerie/src/backend.rs

@@ -231,7 +231,8 @@ impl Backend for FaerieBackend {
                     from: name,
                     to,
                     at: u64::from(offset),
-                }).map_err(|e| ModuleError::Backend(e.to_string()))?;
+                })
+                .map_err(|e| ModuleError::Backend(e.to_string()))?;
         }
         for &(offset, id, addend) in data_relocs {
             debug_assert_eq!(
@@ -244,7 +245,8 @@ impl Backend for FaerieBackend {
                     from: name,
                     to,
                     at: u64::from(offset),
-                }).map_err(|e| ModuleError::Backend(e.to_string()))?;
+                })
+                .map_err(|e| ModuleError::Backend(e.to_string()))?;
         }
 
         self.artifact
@@ -410,7 +412,8 @@ impl<'a> RelocSink for FaerieRelocSink<'a> {
                     reloc: raw_reloc,
                     addend: addend_i32,
                 },
-            ).expect("faerie relocation error");
+            )
+            .expect("faerie relocation error");
     }
 
     fn reloc_jt(&mut self, _offset: CodeOffset, _reloc: Reloc, _jt: ir::JumpTable) {

lib/faerie/src/lib.rs

@@ -9,10 +9,7 @@
     unstable_features
 )]
 #![warn(unused_import_braces)]
-#![cfg_attr(
-    feature = "clippy",
-    plugin(clippy(conf_file = "../../clippy.toml"))
-)]
+#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
 #![cfg_attr(
     feature = "cargo-clippy",
     allow(new_without_default, new_without_default_derive)