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-rw-r--r--src/bootstrap/check.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/bootstrap/check.rs b/src/bootstrap/check.rs
index 48b3d356985..e4fbae3ff0d 100644
--- a/src/bootstrap/check.rs
+++ b/src/bootstrap/check.rs
@@ -980,7 +980,8 @@ impl Step for ErrorIndex {
         build.run(builder.tool_cmd(Tool::ErrorIndex)
                     .arg("markdown")
                     .arg(&output)
-                    .env("CFG_BUILD", &build.build));
+                    .env("CFG_BUILD", &build.build)
+                    .env("RUSTC_ERROR_METADATA_DST", build.extended_error_dir()));
 
         markdown_test(builder, compiler, &output);
     }