diff --git a/src/crawler.rs b/src/crawler.rs
index f0ec6a71..20b63f48 100644
--- a/src/crawler.rs
+++ b/src/crawler.rs
@@ -46,6 +46,7 @@ pub enum CrawlerError {
 #[derive(Clone, Debug)]
 pub enum CrawledInstanceStatus {
     Ok(Duration),
+    #[allow(dead_code)]
     InvalidStatusCode(StatusCode, Duration),
     StringNotFound,
     ConnectionError,
diff --git a/src/errors.rs b/src/errors.rs
index bc61899b..56d53a6e 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -5,14 +5,9 @@ use askama::Template;
 #[template(path = "error.html")]
 pub struct ErrorTemplate<'a> {
     pub detail: &'a str,
-    pub additional_data: &'a Option<serde_json::Value>,
     pub status_code: StatusCode,
 }
 
-pub trait AdditionalErrorData {
-    fn additional_error_data(&self) -> Option<serde_json::Value>;
-}
-
 macro_rules! impl_api_error {
     ($err:ty, status => {$($variant:pat => $code:expr),+ $(,)?}) => {
         impl actix_web::ResponseError for $err where $err: std::error::Error + 'static {
@@ -21,7 +16,7 @@ macro_rules! impl_api_error {
 
                 let detail = format!("{}", self);
                 let additional_data = None;
-                let error_page = crate::errors::ErrorTemplate { detail: &detail, additional_data: &additional_data, status_code: self.status_code() };
+                let error_page = crate::errors::ErrorTemplate { detail: &detail, status_code: self.status_code() };
 
                 actix_web::HttpResponse::build(self.status_code()).html(error_page.render().expect("failed to render error page"))
             }
@@ -39,12 +34,10 @@ macro_rules! impl_api_error {
     ($err:ty, status => {$($variant:pat => $code:expr),+ $(,)?}$(,)? data => {$($add_variant:pat => $add_code:expr),+ $(,)?}) => {
         impl actix_web::ResponseError for $err where $err: std::error::Error + 'static {
             fn error_response(&self) -> actix_web::HttpResponse {
-                use crate::errors::AdditionalErrorData;
                 use askama::Template;
 
                 let detail = format!("{}", self);
-                let additional_data = self.additional_error_data();
-                let error_page = crate::errors::ErrorTemplate { detail: &detail, additional_data: &additional_data, status_code: self.status_code() };
+                let error_page = crate::errors::ErrorTemplate { detail: &detail, status_code: self.status_code() };
 
                 actix_web::HttpResponse::build(self.status_code()).content_type("text/html; charset=utf-8").body(error_page.render().expect("failed to render error page"))
             }
@@ -57,16 +50,6 @@ macro_rules! impl_api_error {
                 }
             }
         }
-
-        impl crate::errors::AdditionalErrorData for $err {
-            fn additional_error_data(&self) -> Option<serde_json::Value> {
-                match self {
-                    $(
-                        $add_variant => $add_code,
-                    )+
-                }
-            }
-        }
     };
 }
 pub(crate) use impl_api_error;
diff --git a/src/search.rs b/src/search.rs
index 655ae412..ccb1f6c8 100644
--- a/src/search.rs
+++ b/src/search.rs
@@ -172,7 +172,7 @@ pub fn get_redirect_instances<'a>(
     Some(instances)
 }
 
-const MAX_DURATION: Duration = Duration::from_secs(std::u64::MAX);
+const MAX_DURATION: Duration = Duration::from_secs(u64::MAX);
 
 pub fn get_redirect_instance(
     crawled_service: &CrawledService,