diff --git a/fix-rustdoc-install-slow.patch b/fix-rustdoc-install-slow.patch
new file mode 100644
index 0000000000000000000000000000000000000000..92c750095bcc711f5654af39cb5cb0b9be05530e
--- /dev/null
+++ b/fix-rustdoc-install-slow.patch
@@ -0,0 +1,85 @@
+From 33ccf6af163e2d04a592cca506f334d905cb94aa Mon Sep 17 00:00:00 2001
+From: Anders Kaseorg <andersk@mit.edu>
+Date: Fri, 17 Sep 2021 00:19:22 -0400
+Subject: [PATCH] bootstrap: Restore missing --bulk-dirs for rust-docs,
+ rustc-docs
+
+---
+ src/bootstrap/dist.rs    |  4 ++--
+ src/bootstrap/tarball.rs | 17 +++++++++++++++++
+ 2 files changed, 19 insertions(+), 2 deletions(-)
+
+diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
+index 86c84a2..aadbb98 100644
+--- a/src/bootstrap/dist.rs
++++ b/src/bootstrap/dist.rs
+@@ -74,7 +74,7 @@ impl Step for Docs {
+ 
+         let mut tarball = Tarball::new(builder, "rust-docs", &host.triple);
+         tarball.set_product_name("Rust Documentation");
+-        tarball.add_dir(&builder.doc_out(host), dest);
++        tarball.add_bulk_dir(&builder.doc_out(host), dest);
+         tarball.add_file(&builder.src.join("src/doc/robots.txt"), dest, 0o644);
+         Some(tarball.generate())
+     }
+@@ -107,7 +107,7 @@ impl Step for RustcDocs {
+ 
+         let mut tarball = Tarball::new(builder, "rustc-docs", &host.triple);
+         tarball.set_product_name("Rustc Documentation");
+-        tarball.add_dir(&builder.compiler_doc_out(host), "share/doc/rust/html/rustc");
++        tarball.add_bulk_dir(&builder.compiler_doc_out(host), "share/doc/rust/html/rustc");
+         Some(tarball.generate())
+     }
+ }
+diff --git a/src/bootstrap/tarball.rs b/src/bootstrap/tarball.rs
+index 7fb0305..50f8605 100644
+--- a/src/bootstrap/tarball.rs
++++ b/src/bootstrap/tarball.rs
+@@ -94,6 +94,7 @@ pub(crate) struct Tarball<'a> {
+     temp_dir: PathBuf,
+     image_dir: PathBuf,
+     overlay_dir: PathBuf,
++    bulk_dirs: Vec<PathBuf>,
+ 
+     include_target_in_component_name: bool,
+     is_preview: bool,
+@@ -132,6 +133,7 @@ impl<'a> Tarball<'a> {
+             temp_dir,
+             image_dir,
+             overlay_dir,
++            bulk_dirs: Vec::new(),
+ 
+             include_target_in_component_name: false,
+             is_preview: false,
+@@ -196,6 +198,11 @@ impl<'a> Tarball<'a> {
+         self.builder.cp_r(src.as_ref(), &dest);
+     }
+ 
++    pub(crate) fn add_bulk_dir(&mut self, src: impl AsRef<Path>, dest: impl AsRef<Path>) {
++        self.bulk_dirs.push(dest.as_ref().to_path_buf());
++        self.add_dir(src, dest);
++    }
++
+     pub(crate) fn generate(self) -> GeneratedTarball {
+         let mut component_name = self.component.clone();
+         if self.is_preview {
+@@ -216,6 +223,16 @@ impl<'a> Tarball<'a> {
+                 .arg("--image-dir")
+                 .arg(&this.image_dir)
+                 .arg(format!("--component-name={}", &component_name));
++
++            if let Some((dir, dirs)) = this.bulk_dirs.split_first() {
++                let mut arg = dir.as_os_str().to_os_string();
++                for dir in dirs {
++                    arg.push(",");
++                    arg.push(dir);
++                }
++                cmd.arg("--bulk-dirs").arg(&arg);
++            }
++
+             this.non_bare_args(cmd);
+         })
+     }
+-- 
+1.8.3.1
+
diff --git a/rust.spec b/rust.spec
index 327858195cd779f69fde7793666882fc7ce578df..162258fe7b0f896b5a064bcaaddc14ec885993bf 100644
--- a/rust.spec
+++ b/rust.spec
@@ -12,7 +12,7 @@
 %bcond_without lldb
 Name:                rust
 Version:             1.51.0
-Release:             9
+Release:             10
 Summary:             The Rust Programming Language
 License:             (ASL 2.0 or MIT) and (BSD and MIT)
 URL:                 https://www.rust-lang.org
@@ -40,6 +40,7 @@ Patch0011:           cargo-help-clippy-should-have-description-to-user.patch
 Patch0012:           fix-a-println-wrong-format.patch
 Patch0013:           CVE-2021-29922.patch
 Patch0014:           fix-rustdoc-error-info.patch
+Patch0015:           fix-rustdoc-install-slow.patch
 %{lua: function rust_triple(arch)
   local abi = "gnu"
   if arch == "armv7hl" then
@@ -273,6 +274,7 @@ sed -i.try-python -e '/^try python3 /i try "%{python}" "$@"' ./configure
 %patch0012 -p1
 %patch0013 -p1
 %patch0014 -p1
+%patch0015 -p1
 rm -rf vendor/curl-sys/curl/
 rm -rf vendor/jemalloc-sys/jemalloc/
 rm -rf vendor/libssh2-sys/libssh2/
@@ -486,6 +488,9 @@ export %{rust_env}
 %{_mandir}/man1/cargo*.1*
 
 %changelog
+* Tue Sep 17 2021 donglongtao <donglongtao@huawei.com> - 1.51.0-10
+- Fix rustdoc install very slow
+
 * Tue Aug 24 2021 caodongxia <caodongxia@huawei.com> - 1.51.0-9
 - Fix rustdoc error info