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-rw-r--r--src/bootstrap/doc.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/bootstrap/doc.rs b/src/bootstrap/doc.rs
index ed351354c44..4bec6c7791a 100644
--- a/src/bootstrap/doc.rs
+++ b/src/bootstrap/doc.rs
@@ -156,7 +156,7 @@ impl Step for RustbookSrc {
         let index = out.join("index.html");
         let rustbook = builder.tool_exe(Tool::Rustbook);
         let mut rustbook_cmd = builder.tool_cmd(Tool::Rustbook);
-        if up_to_date(&src, &index) && up_to_date(&rustbook, &index) {
+        if builder.config.dry_run || up_to_date(&src, &index) && up_to_date(&rustbook, &index) {
             return;
         }
         builder.info(&format!("Rustbook ({}) - {}", target, name));