diff --git a/src/api3/config.rs b/src/api3/config.rs
index df476581..6d51f05f 100644
--- a/src/api3/config.rs
+++ b/src/api3/config.rs
@@ -1,9 +1,9 @@
-use failure::*;
-use std::collections::HashMap;
+//use failure::*;
+//use std::collections::HashMap;
 
 use crate::api::schema::*;
 use crate::api::router::*;
-use serde_json::{json, Value};
+use serde_json::{json};
 
 mod datastore;
 
diff --git a/src/api3/config/datastore.rs b/src/api3/config/datastore.rs
index 2e755512..cbb7910a 100644
--- a/src/api3/config/datastore.rs
+++ b/src/api3/config/datastore.rs
@@ -1,5 +1,5 @@
 use failure::*;
-use std::collections::HashMap;
+//use std::collections::HashMap;
 
 use crate::api::schema::*;
 use crate::api::router::*;
diff --git a/src/backup/chunk_store.rs b/src/backup/chunk_store.rs
index b88370fa..04155542 100644
--- a/src/backup/chunk_store.rs
+++ b/src/backup/chunk_store.rs
@@ -87,7 +87,7 @@ fn lock_file<P: AsRef<Path>>(filename: P, timeout: usize) -> Result<File, Error>
                 bail!("unable to aquire lock {:?} - clock problems - {}", path, err);
             }
         }
-        std::thread::sleep_ms(100);
+        std::thread::sleep(std::time::Duration::from_millis(100));
     }
     Ok(lockfile)
 }