diff --git a/src/libstd/sys/redox/process.rs b/src/libstd/sys/redox/process.rs
index 9b85fa41a0a4f..62eb8cb23ab56 100644
--- a/src/libstd/sys/redox/process.rs
+++ b/src/libstd/sys/redox/process.rs
@@ -116,8 +116,10 @@ impl Command {
         self.gid = Some(id);
     }
 
-    pub unsafe fn pre_exec(&mut self,
-                       f: Box<dyn FnMut() -> io::Result<()> + Send + Sync>) {
+    pub unsafe fn pre_exec(
+        &mut self,
+        f: Box<dyn FnMut() -> io::Result<()> + Send + Sync>,
+    ) {
         self.closures.push(f);
     }
 
diff --git a/src/libstd/sys/unix/process/process_common.rs b/src/libstd/sys/unix/process/process_common.rs
index 9975064ca655f..7fa256e59b2db 100644
--- a/src/libstd/sys/unix/process/process_common.rs
+++ b/src/libstd/sys/unix/process/process_common.rs
@@ -149,8 +149,10 @@ impl Command {
         &mut self.closures
     }
 
-    pub unsafe fn pre_exec(&mut self,
-                       f: Box<dyn FnMut() -> io::Result<()> + Send + Sync>) {
+    pub unsafe fn pre_exec(
+        &mut self,
+        f: Box<dyn FnMut() -> io::Result<()> + Send + Sync>,
+    ) {
         self.closures.push(f);
     }