Auto merge of rust-lang#122205 - onur-ozkan:incorrect-sysroot-for-target, r=albertlarsan68

ensure std is prepared for cross-targets

Previously, doing `x test compiler/*` would result in build failures due to missing std. This PR fixes that.

Author: bors

src/bootstrap/src/core/build_steps/test.rs

@@ -2605,8 +2605,12 @@ impl Step for Crate {
         let mode = self.mode;
 
         // See [field@compile::Std::force_recompile].
-        builder.ensure(compile::Std::force_recompile(compiler, target));
-        builder.ensure(RemoteCopyLibs { compiler, target });
+        builder.ensure(compile::Std::force_recompile(compiler, compiler.host));
+
+        if builder.config.build != target {
+            builder.ensure(compile::Std::force_recompile(compiler, target));
+            builder.ensure(RemoteCopyLibs { compiler, target });
+        }
 
         // If we're not doing a full bootstrap but we're testing a stage2
         // version of libstd, then what we're actually testing is the libstd