diff --git a/src/context/context.rs b/src/context/context.rs
index b0b0b699a8..0ac9416528 100644
--- a/src/context/context.rs
+++ b/src/context/context.rs
@@ -896,7 +896,12 @@ impl FdTbl {
 
 impl FdTbl {
     pub fn enumerate(&self) -> impl Iterator<Item = (usize, &Option<FileDescriptor>)> {
-        self.posix_fdtbl.iter().enumerate().chain(self.upper_fdtbl.iter().enumerate().map(|(i, fd)| (i | UPPER_FDTBL_TAG, fd)))
+        self.posix_fdtbl.iter().enumerate().chain(
+            self.upper_fdtbl
+                .iter()
+                .enumerate()
+                .map(|(i, fd)| (i | UPPER_FDTBL_TAG, fd)),
+        )
     }
 
     pub fn iter(&self) -> impl Iterator<Item = &Option<FileDescriptor>> {
diff --git a/src/scheme/dtb.rs b/src/scheme/dtb.rs
index 58b6d7970f..a1d71ab5e5 100644
--- a/src/scheme/dtb.rs
+++ b/src/scheme/dtb.rs
@@ -127,7 +127,7 @@ impl KernelScheme for DtbScheme {
 
         dst_buf.copy_common_bytes_from_slice(src_buf)
     }
-    
+
     fn kfpath(&self, id: usize, buf: UserSliceWo, token: &mut CleanLockToken) -> Result<usize> {
         //TODO: construct useful path?
         buf.copy_common_bytes_from_slice("/scheme/kernel.dtb/".as_bytes())
diff --git a/src/scheme/sys/iostat.rs b/src/scheme/sys/iostat.rs
index 641ba8e625..98e9915ffb 100644
--- a/src/scheme/sys/iostat.rs
+++ b/src/scheme/sys/iostat.rs
@@ -45,7 +45,11 @@ fn inner(fpath_user: UserSliceRw, token: &mut CleanLockToken) -> Result<Vec<u8>>
                 let _ = write!(
                     string,
                     "{} {:>4}: {:>8} {:>8} {:>08X}: ",
-                    if fd & syscall::UPPER_FDTBL_TAG == 0 { " " } else { "U" },
+                    if fd & syscall::UPPER_FDTBL_TAG == 0 {
+                        " "
+                    } else {
+                        "U"
+                    },
                     fd & !syscall::UPPER_FDTBL_TAG,
                     description.scheme.get(),
                     description.number,