diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 3756976dee062..126ef6e31eff0 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -1538,18 +1538,7 @@ impl Build {
         if self.config.dry_run() {
             return;
         }
-        for f in self.read_dir(src) {
-            let path = f.path();
-            let name = path.file_name().unwrap();
-            let dst = dst.join(name);
-            if t!(f.file_type()).is_dir() {
-                t!(fs::create_dir_all(&dst));
-                self.cp_r(&path, &dst);
-            } else {
-                let _ = fs::remove_file(&dst);
-                self.copy(&path, &dst);
-            }
-        }
+        self.recurse_(src, dst, Path::new(""), &|_| true)
     }
 
     /// Copies the `src` directory recursively to `dst`. Both are assumed to exist
@@ -1561,6 +1550,8 @@ impl Build {
     }
 
     // Inner function does the actual work
+    //
+    // FIXME: consider merging cp_filtered and cp_r into one function
     fn recurse_(&self, src: &Path, dst: &Path, relative: &Path, filter: &dyn Fn(&Path) -> bool) {
         for f in self.read_dir(src) {
             let path = f.path();
@@ -1570,11 +1561,9 @@ impl Build {
             // Only copy file or directory if the filter function returns true
             if filter(&relative) {
                 if t!(f.file_type()).is_dir() {
-                    let _ = fs::remove_dir_all(&dst);
                     self.create_dir(&dst);
                     self.recurse_(&path, &dst, &relative, filter);
                 } else {
-                    let _ = fs::remove_file(&dst);
                     self.copy(&path, &dst);
                 }
             }