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

lib/environ/src/environ.rs

@@ -518,7 +518,8 @@ impl<'module_environment> cranelift_wasm::FuncEnvironment for FuncEnvironment<'m
                             .as_u32()
                             .checked_mul(u32::from(sig_id_size))
                             .unwrap(),
-                    ).unwrap(),
+                    )
+                    .unwrap(),
                 );
 
                 // Load the callee ID.

lib/environ/src/lib.rs

@@ -6,10 +6,7 @@
 #![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
 #![warn(unused_import_braces)]
 #![cfg_attr(feature = "std", deny(unstable_features))]
-#![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)

lib/environ/src/vmoffsets.rs

@@ -115,7 +115,8 @@ impl VMOffsets {
             index
                 .checked_mul(u32::from(self.size_of_vmmemory()))
                 .unwrap(),
-        ).unwrap()
+        )
+        .unwrap()
     }
 
     /// Return the offset from the `globals` pointer to `VMGlobal` index `index`.
@@ -124,7 +125,8 @@ impl VMOffsets {
             index
                 .checked_mul(u32::from(self.size_of_vmglobal()))
                 .unwrap(),
-        ).unwrap()
+        )
+        .unwrap()
     }
 
     /// Return the offset from the `tables` pointer to `VMTable` index `index`.
@@ -133,7 +135,8 @@ impl VMOffsets {
             index
                 .checked_mul(u32::from(self.size_of_vmtable()))
                 .unwrap(),
-        ).unwrap()
+        )
+        .unwrap()
     }
 
     /// Return the offset from the `memories` pointer to the `base` field in