diff --git a/src/build/pandoc.rs b/src/build/pandoc.rs
index bba26d0..f5d7ace 100644
--- a/src/build/pandoc.rs
+++ b/src/build/pandoc.rs
@@ -1,7 +1,6 @@
 use pandoc::{self, Pandoc, PandocOutput, PandocError};
 use std::error::Error;
 use utils::get_exe_dir;
-use std::path::PathBuf;
 use config::{Config, References};
 
 
diff --git a/src/config/csl.rs b/src/config/csl.rs
index 49221ec..6fc3c8f 100644
--- a/src/config/csl.rs
+++ b/src/config/csl.rs
@@ -36,7 +36,7 @@ pub fn is_valid_csl(csl_name: String) -> bool {
 pub fn unpack_csl(csl_name: String) -> PathBuf {
     let file = get_temp_file();
     let mut csl_temp = File::create(&file).expect("Failed to open temporary file");
-    let mut csl_buffer = get_csl_data(csl_name).unwrap();
+    let csl_buffer = get_csl_data(csl_name).unwrap();
     csl_temp.write_all(csl_buffer.as_bytes()).expect("Failed to write CSL to temporary file");
     return file;
 }
diff --git a/src/processors/head_cleanup.rs b/src/processors/head_cleanup.rs
index b44b793..d44021f 100644
--- a/src/processors/head_cleanup.rs
+++ b/src/processors/head_cleanup.rs
@@ -1,4 +1,4 @@
-use html::{sciter_start, get_html, destroy_matching, destroy_at, get_head, get_body};
+use html::{sciter_start, get_html, destroy_matching, get_head, get_body};
 use sciter::Element;
 use config::Config;
 
@@ -11,7 +11,7 @@ pub fn head_cleanup(config: Config, input: String) -> Result<String, String> {
     destroy_matching(&mut head, "title");
 
     let mut meta_charset = Element::create_at("meta", &mut head).unwrap();
-    meta_charset.set_attribute("charset", "UTF-8");
+    meta_charset.set_attribute("charset", "UTF-8").expect("Failed to set charset");
 
     let mut body = get_body(&mut root);
     body.set_attribute("class", "content").expect("Failed to set body class");
diff --git a/src/processors/images.rs b/src/processors/images.rs
index 40a1118..46c3068 100644
--- a/src/processors/images.rs
+++ b/src/processors/images.rs
@@ -1,5 +1,4 @@
 use html::{sciter_start, get_html, get_body, find_all};
-use sciter::{Element, Value};
 use config::Config;
 use utils::{resolve_path, path_to_string};
 
@@ -7,12 +6,14 @@ use utils::{resolve_path, path_to_string};
 pub fn images(config: Config, input: String) -> Result<String, String> {
     let mut root = sciter_start(input);
     let mut body = get_body(&mut root);
-    let mut images = find_all(&mut body, "img[src]");
+    let images = find_all(&mut body, "img[src]");
     for mut image in images {
         let image_src = image.get_attribute("src").expect("Image doesn't have a src");
         let image_path = resolve_path(image_src);
         if image_path.exists() && image_path.is_file() {
-            image.set_attribute("src", path_to_string(&image_path.canonicalize().unwrap()));
+            image
+                .set_attribute("src", path_to_string(&image_path.canonicalize().unwrap()))
+                .expect("Failed to set image attribute");
         }
     }
     return Ok(get_html(root));
diff --git a/src/processors/references.rs b/src/processors/references.rs
index 8c33faf..20f1445 100644
--- a/src/processors/references.rs
+++ b/src/processors/references.rs
@@ -1,5 +1,5 @@
-use html::{sciter_start, get_html, get_body, find_first};
-use sciter::{Element, Value};
+use html::{sciter_start, get_html, get_body};
+use sciter::Element;
 use config::Config;
 
 
@@ -13,9 +13,11 @@ fn create_title() -> Element {
 pub fn references(config: Config, input: String) -> Result<String, String> {
     let mut root = sciter_start(input);
     let mut body = get_body(&mut root);
-    let mut possible_references = body.find_first("div#refs").expect("Failed to get refs");
+    let possible_references = body.find_first("div#refs").expect("Failed to get refs");
     if possible_references.is_some() {
-        body.insert(possible_references.unwrap().index(), &create_title());
+        body.insert(possible_references.unwrap().index(), &create_title()).expect(
+            "Failed to add references title"
+        );
     }
     return Ok(get_html(root));
 }