improve crate and remove log crate

iam/src/manager.rs

@@ -11,7 +11,6 @@ use crate::{
 use common::error::{Error, Result};
 use ecstore::config::error::is_err_config_not_found;
 use ecstore::utils::{crypto::base64_encode, path::path_join_buf};
-use log::{debug, warn};
 use madmin::{AccountStatus, AddOrUpdateUserReq, GroupDesc};
 use policy::{
     arn::ARN,
@@ -40,6 +39,7 @@ use tokio::{
     },
 };
 use tracing::error;
+use tracing::{debug, warn};
 
 const IAM_FORMAT_FILE: &str = "format.json";
 const IAM_FORMAT_VERSION_1: i32 = 1;