Update to Rust 2018

src/lib.rs

@@ -1,17 +1,10 @@
-extern crate git2;
-extern crate pretty_env_logger;
-#[macro_use]
-extern crate log;
-extern crate indicatif;
-extern crate tempfile;
-extern crate walkdir;
-
 use git2::{Cred, Error, FetchOptions, Index, IndexEntry, IndexTime, Oid, Progress, PushOptions, RemoteCallbacks, Repository, Signature};
+use indicatif::{ProgressBar, ProgressStyle};
+use log::{info, trace};
 use std::path::{Path, PathBuf};
 use std::string::String;
 use std::str;
 use std::sync::Arc;
-use indicatif::{ProgressBar, ProgressStyle};
 use walkdir::WalkDir;
 
 pub struct BenchmarkRepositoryInner