Run cargo bench on rustc nightly in travis, remote useless move

.travis.yml

@@ -19,3 +19,4 @@ script:
   - cargo build --verbose --features=serde-decimal
   - cargo test --verbose --features=serde-decimal
   - if [ "$(rustup show | grep default | grep stable)" != "" ]; then cd fuzz && cargo test --verbose && ./travis-fuzz.sh; fi
+  - if [ "$(rustup show | grep default | grep nightly)" != "" ]; then cargo bench --features unstable; fi

src/util/misc.rs

@@ -130,7 +130,7 @@ mod benches {
 
         assert_eq!(hex_bytes(&data).unwrap(), data_bytes);
 
-        b.iter(move || {
+        b.iter(|| {
             hex_bytes(&data).unwrap()
         })
     }