Update code to rust 2018 edition

Author: bltavares

Cargo.toml

@@ -7,6 +7,7 @@ documentation = "https://docs.rs/random-access-memory"
 description = "Continuously read,write to memory using random offsets and lengths"
 authors = ["datrs <[email protected]>"]
 readme = "README.md"
+edition = "2018"
 
 [dependencies]
 failure = "0.1.5"

fuzz/Cargo.toml

@@ -4,6 +4,7 @@ name = "random-access-memory-fuzz"
 version = "0.0.1"
 authors = ["Automatically generated"]
 publish = false
+edition = "2018"
 
 [package.metadata]
 cargo-fuzz = true

fuzz/fuzz_targets/fuzz_target_1.rs

@@ -1,7 +1,7 @@
 #![no_main]
-#[macro_use]
-extern crate libfuzzer_sys;
-extern crate random_access_memory as ram;
+
+use libfuzzer_sys::fuzz_target;
+use random_access_memory as ram;
 
 fuzz_target!(|data: &[u8]| {
   let mut file = ram::Sync::default();

src/lib.rs

@@ -3,11 +3,7 @@
 #![cfg_attr(feature = "nightly", doc(include = "../README.md"))]
 #![cfg_attr(test, deny(warnings))]
 
-#[macro_use]
-extern crate failure;
-extern crate random_access_storage;
-
-use failure::Error;
+use failure::{ensure, Error};
 use random_access_storage::RandomAccess;
 use std::cmp;
 use std::io;

tests/model.rs

@@ -1,12 +1,7 @@
-#[macro_use]
-extern crate quickcheck;
-extern crate rand;
-extern crate random_access_memory as ram;
-extern crate random_access_storage;
-
 use self::Op::*;
-use quickcheck::{Arbitrary, Gen};
+use quickcheck::{quickcheck, Arbitrary, Gen};
 use rand::Rng;
+use random_access_memory as ram;
 use random_access_storage::RandomAccess;
 use std::u8;
 

tests/regression.rs

@@ -1,6 +1,4 @@
-extern crate random_access_memory as ram;
-extern crate random_access_storage;
-
+use random_access_memory as ram;
 use random_access_storage::RandomAccess;
 
 #[test]

tests/test.rs

@@ -1,6 +1,4 @@
-extern crate random_access_memory as ram;
-extern crate random_access_storage;
-
+use random_access_memory as ram;
 use random_access_storage::RandomAccess;
 
 #[test]