diff --git a/src/spawner/mod.rs b/src/spawner/mod.rs
index aa3688e..77f28cc 100644
--- a/src/spawner/mod.rs
+++ b/src/spawner/mod.rs
@@ -99,15 +99,11 @@ impl<'a> Spawner<'a> {
 
                 Trigger::Pipe(s) => {
                     let mut builder = VoidBuilder::new();
-                    self.mount_entrypoint(&mut builder, self.binary)?;
-                    self.forward_mounts(&mut builder, &entrypoint.environment, &entrypoint.args);
-                    self.forward_files(&mut builder, &entrypoint.args);
+                    self.prepare_spawner(&mut builder, &entrypoint.environment, &entrypoint.args)?;
 
                     let pipe = self.pipes.get_mut(s).unwrap().take_read()?;
                     builder.keep_fd(&pipe);
 
-                    builder.mount("/proc", "/proc").remount_proc();
-
                     let closure = || match self.pipe_trigger(pipe, entrypoint, name) {
                         Ok(()) => exitcode::OK,
                         Err(e) => {
@@ -126,15 +122,11 @@ impl<'a> Spawner<'a> {
 
                 Trigger::FileSocket(s) => {
                     let mut builder = VoidBuilder::new();
-                    self.mount_entrypoint(&mut builder, self.binary)?;
-                    self.forward_mounts(&mut builder, &entrypoint.environment, &entrypoint.args);
-                    self.forward_files(&mut builder, &entrypoint.args);
+                    self.prepare_spawner(&mut builder, &entrypoint.environment, &entrypoint.args)?;
 
                     let socket = self.sockets.get_mut(s).unwrap().take_read()?;
                     builder.keep_fd(&socket);
 
-                    builder.mount("/proc", "/proc").remount_proc();
-
                     let closure = || match self.file_socket_trigger(socket, entrypoint, name) {
                         Ok(()) => exitcode::OK,
                         Err(e) => {
@@ -325,6 +317,20 @@ impl<'a> Spawner<'a> {
         }
     }
 
+    fn prepare_spawner<'b>(
+        &self,
+        builder: &mut VoidBuilder,
+        environment: impl IntoIterator<Item = &'b Environment>,
+        args: impl IntoIterator<Item = &'b Arg> + Copy,
+    ) -> Result<()> {
+        self.mount_entrypoint(builder, self.binary)?;
+        self.forward_mounts(builder, environment, args);
+        self.forward_files(builder, args);
+        builder.mount("/proc", "/proc").remount_proc();
+
+        Ok(())
+    }
+
     fn prepare_env<'b>(
         &self,
         builder: &mut VoidBuilder,