diff --git a/src/builder/artifacts.rs b/src/builder/artifacts.rs
index 21fdf5c..e3b447f 100644
--- a/src/builder/artifacts.rs
+++ b/src/builder/artifacts.rs
@@ -51,28 +51,15 @@ async fn extract_files(
         files
     );
 
-    // try_join_all(
-    //     files
-    //         .iter()
-    //         .enumerate() // need index to avoid copy collisions
-    //         .map(|(i, f)| docker::copy_file(container, f, None)),
-    // )
-    // .await
-
-    let mut results = vec![];
-
-    for f in files.iter() {
-        let from = Path::new(f);
-        // if no rename is given, use basename of `from` as target path
-        // these files should go in chal directory, so pass it in
+    try_join_all(files.iter().map(|f| {
+        let from = PathBuf::from(f);
         let to = chal
             .directory
             .join(from.file_name().unwrap().to_str().unwrap());
 
-        results.push(copy_file(container, from, &to).await?);
-    }
-
-    Ok(results)
+        copy_file(container, from, to)
+    }))
+    .await
 }
 
 /// Extract one file from container and rename
diff --git a/src/builder/docker.rs b/src/builder/docker.rs
index 35d95f1..92021fd 100644
--- a/src/builder/docker.rs
+++ b/src/builder/docker.rs
@@ -148,8 +148,8 @@ pub async fn remove_container(name: &str) -> Result<()> {
     Ok(())
 }
 
-pub async fn copy_file(container_id: &str, from: &Path, to: &Path) -> Result<PathBuf> {
-    info!("copying {container_id}:{from:?} to {to:?}");
+pub async fn copy_file(container_id: &str, from: PathBuf, to: PathBuf) -> Result<PathBuf> {
+    debug!("copying {container_id}:{from:?} to {to:?}");
 
     let client = client().await?;
 
@@ -182,7 +182,7 @@ pub async fn copy_file(container_id: &str, from: &Path, to: &Path) -> Result<Pat
     if let Some(mut entry_r) = tar.entries()?.next() {
         let mut entry = entry_r?;
         trace!("got entry: {:?}", entry.path());
-        let mut target = File::create(to)?;
+        let mut target = File::create(&to)?;
         io::copy(&mut entry, &mut target)?;
     } else {
         bail!("downloaded archive for {container_id}:{from:?} has no files in it!");
diff --git a/src/builder/mod.rs b/src/builder/mod.rs
index 0080141..1de9902 100644
--- a/src/builder/mod.rs
+++ b/src/builder/mod.rs
@@ -94,6 +94,8 @@ fn build_challenge(
     }
 
     if extract_artifacts {
+        info!("extracting build artifacts for chal {:?}", chal.directory);
+
         // find the matching tag for Provide entries that have a `from:` source
         let image_assoc = chal
             .provide
@@ -114,12 +116,6 @@ fn build_challenge(
             })
             .collect_vec();
 
-        debug!(
-            "extracting {} build artifacts for chal {:?}",
-            image_assoc.len(),
-            chal.directory
-        );
-
         let assets = image_assoc
             .into_iter()
             .map(|(p, tag)| {
@@ -145,44 +141,7 @@ fn build_challenge(
             .flatten_ok()
             .collect::<Result<Vec<_>>>()?;
 
-        debug!("extracted assets: {:?}", assets);
+        info!("extracted artifacts: {:?}", assets);
     }
     Ok(built_tags)
 }
-
-// /// Push passed tags to registry
-// pub fn push_tags(tags: Vec<String>) -> Result<Vec<String>> {
-//     let config = get_config()?;
-
-//     let built_tags = tags
-//         .iter()
-//         .map(|tag| {
-//             push_image(tag, &config.registry.build)
-//                 .with_context(|| format!("error pushing image {tag}"))
-//         })
-//         .collect::<Result<_>>()?;
-
-//     Ok(built_tags)
-// }
-
-// /// Extract any assets needed from given challenges
-// pub fn extract_assets(
-//     profile_name: &str,
-//     built_chals: Vec<&ChallengeConfig>,
-// ) -> Result<Vec<String>> {
-//     built_chals.iter().map(|chal| {
-//         chal.provide.iter().filter(|p| p.from.is_some()).map(|p| {
-//             assets::extract_asset(p, container)
-//         })
-
-//         // let tag = format!(
-//         //     image_tag!(),
-//         //     registry = config.registry.domain,
-//         //     challenge = chal.name,
-//         //     container = p.name,
-//         //     profile = profile_name
-//         // );
-//     });
-
-//     Ok(vec![])
-// }