The support added in https://github.com/rust-lang/rust/pull/35187 won't pass `-Z orbit=off` for tests, such as the run-pass test suite. We should do it when `--disable-orbit` is present.
The support added in #35187 won't pass
-Z orbit=offfor tests, such as the run-pass test suite. We should do it when--disable-orbitis present.