1 files changed, 9 insertions, 7 deletions
diff --git a/cli/ops/process.rs b/cli/ops/process.rs
index 096b09bd0..980147832 100644
--- a/cli/ops/process.rs
+++ b/cli/ops/process.rs
@@ -26,13 +26,15 @@ fn clone_file(rid: u32, state: &State) -> Result<std::fs::File, OpError> {
     .resource_table
     .get_mut::<StreamResourceHolder>(rid)
     .ok_or_else(OpError::bad_resource_id)?;
-  let file = match repr_holder.resource {
-    StreamResource::FsFile(ref mut file, _) => file,
-    _ => return Err(OpError::bad_resource_id()),
-  };
-  let tokio_file = futures::executor::block_on(file.try_clone())?;
-  let std_file = futures::executor::block_on(tokio_file.into_std());
-  Ok(std_file)
+  match repr_holder.resource {
+    StreamResource::FsFile(Some((ref mut file, _))) => {
+      let tokio_file = futures::executor::block_on(file.try_clone())?;
+      let std_file = futures::executor::block_on(tokio_file.into_std());
+      Ok(std_file)
+    }
+    StreamResource::FsFile(None) => Err(OpError::resource_unavailable()),
+    _ => Err(OpError::bad_resource_id()),
+  }
 }
 
 fn subprocess_stdio_map(s: &str) -> std::process::Stdio {