put doc comments above use declarations

src/credentials.rs

@@ -1,7 +1,7 @@
-use header::XRegistryAuth;
 ///! Access credentials for accessing any docker daemon endpoints
 ///!
 ///! Currently, any values of these types are only used for `/images/{name}/push` api.
+use header::XRegistryAuth;
 use serde_json;
 use system::AuthToken;
 

src/response.rs

@@ -1,6 +1,6 @@
-use std::error::Error as StdError;
 ///! Response from Dockerd
 ///!
+use std::error::Error as StdError;
 use std::fmt;
 
 use serde_json::value as json;