diff --git a/fusio-object-store/src/fs.rs b/fusio-object-store/src/fs.rs
index f550307..3834d24 100644
--- a/fusio-object-store/src/fs.rs
+++ b/fusio-object-store/src/fs.rs
@@ -1,10 +1,10 @@
-use std::{future::Future, sync::Arc};
+use std::sync::Arc;
 
 use async_stream::stream;
 use fusio::{
     fs::{FileMeta, FileSystemTag, Fs, OpenOptions},
     path::Path,
-    Error, MaybeSend,
+    Error,
 };
 use futures_core::Stream;
 use futures_util::stream::StreamExt;
diff --git a/fusio-opendal/src/fs.rs b/fusio-opendal/src/fs.rs
index f579036..7e7ef12 100644
--- a/fusio-opendal/src/fs.rs
+++ b/fusio-opendal/src/fs.rs
@@ -1,9 +1,7 @@
-use std::future::Future;
-
 use fusio::{
     fs::{FileMeta, FileSystemTag, Fs, OpenOptions},
     path::Path,
-    Error, MaybeSend,
+    Error,
 };
 use futures_core::Stream;
 use futures_util::TryStreamExt;
@@ -71,7 +69,7 @@ impl Fs for OpendalFs {
             .map_err(parse_opendal_error)
     }
 
-    async fn link(&self, from: &Path, to: &Path) -> Result<(), Error> {
+    async fn link(&self, _from: &Path, _to: &Path) -> Result<(), Error> {
         Err(Error::Unsupported {
             message: "opendal does not support link file".to_string(),
         })
diff --git a/fusio/src/fs/mod.rs b/fusio/src/fs/mod.rs
index be9293c..df7cefa 100644
--- a/fusio/src/fs/mod.rs
+++ b/fusio/src/fs/mod.rs
@@ -57,8 +57,6 @@ pub trait Fs: MaybeSend + MaybeSync {
 
 #[cfg(test)]
 mod tests {
-    use crate::DynFs;
-
     #[ignore]
     #[cfg(all(
         feature = "tokio-http",
diff --git a/fusio/src/impls/remotes/aws/fs.rs b/fusio/src/impls/remotes/aws/fs.rs
index ff16080..a80076a 100644
--- a/fusio/src/impls/remotes/aws/fs.rs
+++ b/fusio/src/impls/remotes/aws/fs.rs
@@ -126,14 +126,6 @@ pub(super) struct AmazonS3Inner {
     pub(super) client: Box<dyn DynHttpClient>,
 }
 
-impl AmazonS3 {
-    pub fn new(client: Box<dyn DynHttpClient>, options: S3Options) -> Self {
-        AmazonS3 {
-            inner: Arc::new(AmazonS3Inner { options, client }),
-        }
-    }
-}
-
 impl Fs for AmazonS3 {
     type File = S3File;
 
@@ -300,6 +292,7 @@ pub struct ListResponse {
 
 #[cfg(test)]
 mod tests {
+    #[cfg(feature = "tokio-http")]
     use crate::{fs::Fs, path::Path};
 
     #[cfg(feature = "tokio-http")]