| //! Check that `--print=backend-has-zstd` is unstable. | |
| //! | |
| //! That print value is intended for use by compiletest, and should probably | |
| //! never be stabilized in this form. | |
| //@ compile-flags: --print=backend-has-zstd | |
| //~? ERROR: the `-Z unstable-options` flag must also be passed |