diff --git a/libimaglink/src/error.rs b/libimaglink/src/error.rs
index 9dd12206..bdf7ccb1 100644
--- a/libimaglink/src/error.rs
+++ b/libimaglink/src/error.rs
@@ -1,8 +1,6 @@
 use std::error::Error;
 use std::fmt::Error as FmtError;
-use std::clone::Clone;
-use std::fmt::{Debug, Display, Formatter};
-use std::fmt;
+use std::fmt::{Display, Formatter};
 
 #[derive(Clone, Copy, Debug, PartialEq)]
 pub enum LinkErrorKind {
diff --git a/libimaglink/src/external.rs b/libimaglink/src/external.rs
index 9ab05ce1..9df53cca 100644
--- a/libimaglink/src/external.rs
+++ b/libimaglink/src/external.rs
@@ -11,13 +11,11 @@
 /// This helps us greatly with deduplication of URLs.
 ///
 
-use std::convert::Into;
 use std::ops::Deref;
 use std::ops::DerefMut;
 use std::collections::BTreeMap;
 
 use libimagstore::store::Entry;
-use libimagstore::store::EntryHeader;
 use libimagstore::store::FileLockEntry;
 use libimagstore::store::Store;
 use libimagstore::storeid::StoreId;
@@ -30,7 +28,6 @@ use internal::InternalLinker;
 use module_path::ModuleEntryPath;
 
 use toml::Value;
-use toml::Table;
 use url::Url;
 use crypto::sha1::Sha1;
 use crypto::digest::Digest;
@@ -234,7 +231,7 @@ impl ExternalLinker for Entry {
     fn remove_external_link(&mut self, store: &Store, link: Url) -> Result<()> {
         // get external links, remove this one, save them
         self.get_external_links(store)
-            .and_then(|mut links| {
+            .and_then(|links| {
                 debug!("Removing link = '{:?}' from links = {:?}", link, links);
                 let links = links.into_iter()
                     .filter(|l| l.serialize() != link.serialize())
diff --git a/libimaglink/src/lib.rs b/libimaglink/src/lib.rs
index e35725e2..448bb853 100644
--- a/libimaglink/src/lib.rs
+++ b/libimaglink/src/lib.rs
@@ -1,3 +1,17 @@
+#![deny(
+    non_camel_case_types,
+    non_snake_case,
+    path_statements,
+    trivial_numeric_casts,
+    unstable_features,
+    unused_allocation,
+    unused_import_braces,
+    unused_imports,
+    unused_mut,
+    unused_qualifications,
+    while_true,
+)]
+
 extern crate itertools;
 #[macro_use] extern crate log;
 extern crate toml;