Try fixing libtest unstable options error

rust-lang · Mar 17, 2024 · f037404 · f037404
1 parent c303e76
commit f037404
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/bootstrap/src/utils/render_tests.rs b/src/bootstrap/src/utils/render_tests.rs
@@ -19,6 +19,10 @@ pub(crate) fn add_flags_and_try_run_tests(builder: &Builder<'_>, cmd: &mut Comma
         cmd.arg("--");
     }
     cmd.args(["-Z", "unstable-options", "--format", "json"]);
+    // If we pass a -Z flag to the test runner, we have to also configure RUSTC_BOOTSTRAP.
+    //
+    // This may already be set but setting it again is harmless.
+    cmd.env("RUSTC_BOOTSTRAP", "1");
 
     try_run_tests(builder, cmd, false)
 }