From ae1259769c89daa76d3bcc35028b26c761091332 Mon Sep 17 00:00:00 2001
From: Joshua Nelson <jnelson@cloudflare.com>
Date: Tue, 29 Mar 2022 14:53:28 -0500
Subject: [PATCH] Don't build the full compiler before running unit tests

This has been present since `builder.ensure` was first added in https://github.com/rust-lang/rust/pull/43059.
It's unclear to me why it was added then - I tested these changes locally
with `x test compiler/rustc_data_structures --stage 0` and they worked fine.

Fixes https://github.com/rust-lang/rust/issues/51748.
---
 src/bootstrap/test.rs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/bootstrap/test.rs b/src/bootstrap/test.rs
index c8b76809abad7..339b7a8d1e6fb 100644
--- a/src/bootstrap/test.rs
+++ b/src/bootstrap/test.rs
@@ -1998,7 +1998,6 @@ impl Step for Crate {
                 compile::std_cargo(builder, target, compiler.stage, &mut cargo);
             }
             Mode::Rustc => {
-                builder.ensure(compile::Rustc { compiler, target });
                 compile::rustc_cargo(builder, &mut cargo, target);
             }
             _ => panic!("can only test libraries"),