Rollup merge of #63721 - Mark-Simulacrum:decouple-error-index, r=matthewjasper

Do not emit JSON dumps of diagnostic codes

This decouples the error index generator from libsyntax for the most part (though it still depends on librustdoc for the markdown parsing and generation).

Fixes #34588

2 files changed, 2 insertions, 4 deletions

diff --git a/src/bootstrap/doc.rs b/src/bootstrap/doc.rs
index 36229720e42..4f96c12fc1d 100644
--- a/src/bootstrap/doc.rs
+++ b/src/bootstrap/doc.rs
@@ -825,8 +825,7 @@ impl Step for ErrorIndex {
         index.arg(crate::channel::CFG_RELEASE_NUM);
 
         // FIXME: shouldn't have to pass this env var
-        index.env("CFG_BUILD", &builder.config.build)
-             .env("RUSTC_ERROR_METADATA_DST", builder.extended_error_dir());
+        index.env("CFG_BUILD", &builder.config.build);
 
         builder.run(&mut index);
     }
diff --git a/src/bootstrap/test.rs b/src/bootstrap/test.rs
index c2c134bfd1d..87bd5cbacff 100644
--- a/src/bootstrap/test.rs
+++ b/src/bootstrap/test.rs
@@ -1535,8 +1535,7 @@ impl Step for ErrorIndex {
         );
         tool.arg("markdown")
             .arg(&output)
-            .env("CFG_BUILD", &builder.config.build)
-            .env("RUSTC_ERROR_METADATA_DST", builder.extended_error_dir());
+            .env("CFG_BUILD", &builder.config.build);
 
         builder.info(&format!("Testing error-index stage{}", compiler.stage));
         let _time = util::timeit(&builder);