From 670631dd2606e7cb7cc488a2f7a7331e9dfd39af Mon Sep 17 00:00:00 2001
From: Lukas Wirth <lukas.wirth@ferrous-systems.com>
Date: Wed, 20 Sep 2023 08:31:33 +0200
Subject: [PATCH] Ensure `build/tmp` exists in `rustdoc_themes::get_themes`

---
 src/tools/rustdoc-themes/main.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/tools/rustdoc-themes/main.rs b/src/tools/rustdoc-themes/main.rs
index cc13df1f5ba4e..1eba83a80572f 100644
--- a/src/tools/rustdoc-themes/main.rs
+++ b/src/tools/rustdoc-themes/main.rs
@@ -1,5 +1,5 @@
 use std::env::args;
-use std::fs::File;
+use std::fs::{create_dir_all, File};
 use std::io::{BufRead, BufReader, BufWriter, Write};
 use std::path::Path;
 use std::process::{exit, Command};
@@ -14,6 +14,7 @@ fn get_themes<P: AsRef<Path>>(style_path: P) -> Vec<String> {
         std::time::SystemTime::UNIX_EPOCH.elapsed().expect("time is after UNIX epoch").as_millis();
 
     let mut in_theme = None;
+    create_dir_all("build/tmp").expect("failed to create temporary test directory");
     for line in BufReader::new(File::open(style_path).expect("read rustdoc.css failed")).lines() {
         let line = line.expect("read line from rustdoc.css failed");
         let line = line.trim();