diff --git a/lib/runtime-abi/src/vfs/file_like.rs b/lib/runtime-abi/src/vfs/file_like.rs
index 36c734ce3..4b9b8771c 100644
--- a/lib/runtime-abi/src/vfs/file_like.rs
+++ b/lib/runtime-abi/src/vfs/file_like.rs
@@ -11,12 +11,11 @@ pub trait FileLike: std::io::Write + std::io::Read + std::io::Seek {
     fn metadata(&self) -> Result<Metadata, failure::Error>;
 
     // write
-//    fn write_file(&mut self, buf: &[u8]) -> Result<usize, io::Error>;
+    //    fn write_file(&mut self, buf: &[u8]) -> Result<usize, io::Error>;
 
     // read
-//    fn read_file(&mut self, buf: &mut [u8]) -> Result<usize, io::Error>;
+    //    fn read_file(&mut self, buf: &mut [u8]) -> Result<usize, io::Error>;
 
     // set_file_len
     fn set_file_len(&mut self, len: usize) -> Result<(), failure::Error>;
 }
-
diff --git a/lib/runtime-abi/src/vfs/vfs.rs b/lib/runtime-abi/src/vfs/vfs.rs
index bbdeee25f..5cb7a0997 100644
--- a/lib/runtime-abi/src/vfs/vfs.rs
+++ b/lib/runtime-abi/src/vfs/vfs.rs
@@ -1,5 +1,6 @@
 use crate::vfs::file_like::FileLike;
 use crate::vfs::vfs_header::{header_from_bytes, ArchiveType, CompressionType};
+use crate::vfs::virtual_file::VirtualFile;
 use hashbrown::HashMap;
 use std::cell::RefCell;
 use std::io;
@@ -8,7 +9,6 @@ use std::path::{Path, PathBuf};
 use std::rc::Rc;
 use tar::EntryType;
 use zbox::{init_env, OpenOptions, Repo, RepoOpener};
-use crate::vfs::virtual_file::VirtualFile;
 
 pub struct Vfs {
     repo: Repo,
diff --git a/lib/runtime-abi/src/vfs/virtual_file.rs b/lib/runtime-abi/src/vfs/virtual_file.rs
index 097199350..cd72231a1 100644
--- a/lib/runtime-abi/src/vfs/virtual_file.rs
+++ b/lib/runtime-abi/src/vfs/virtual_file.rs
@@ -1,16 +1,19 @@
-use failure::Error;
 use crate::vfs::file_like::{FileLike, Metadata};
+use failure::Error;
 use std::io;
 
 pub struct VirtualFile(zbox::File);
 
 impl VirtualFile {
-    pub fn new(file: zbox::File) -> Self { VirtualFile(file) }
+    pub fn new(file: zbox::File) -> Self {
+        VirtualFile(file)
+    }
 }
 
 impl FileLike for VirtualFile {
     fn metadata(&self) -> Result<Metadata, Error> {
-        self.0.metadata()
+        self.0
+            .metadata()
             .map(|m| Metadata {
                 len: m.content_len(),
                 is_file: m.is_file(),