make most requested changes

src/util/error.rs

@@ -1,5 +1,4 @@
 //! Module containing error types used in Garage
-#![allow(missing_docs)]
 use err_derive::Error;
 use hyper::StatusCode;
 use std::io;

src/util/lib.rs

@@ -1,4 +1,3 @@
-#![warn(missing_crate_level_docs, missing_docs)]
 //! Crate containing common functions and types used in Garage
 
 #[macro_use]