Test with toolstd

Author: tgross35

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

@@ -3498,9 +3498,7 @@ impl Step for TestFloatParse {
         let cargo_test = tool::prepare_tool_cargo(
             builder,
             compiler,
-            // todo: seems like this should be `Mode::Std`
-            // Mode::Std,
-            Mode::ToolBootstrap,
+            Mode::ToolStd,
             bootstrap_host,
             "test",
             path,
@@ -3523,7 +3521,7 @@ impl Step for TestFloatParse {
         let mut cargo_run = tool::prepare_tool_cargo(
             builder,
             compiler,
-            Mode::ToolBootstrap,
+            Mode::ToolStd,
             bootstrap_host,
             "run",
             path,