error: unexpected `--cfg overflow_checks` flag | |
| | |
= note: config `overflow_checks` is only supposed to be controlled by `-C overflow-checks` | |
= note: manually setting a built-in cfg can and does create incoherent behaviors | |
= note: `#[deny(explicit_builtin_cfgs_in_flags)]` on by default | |
error: aborting due to 1 previous error | |