| error: invalid `--check-cfg` argument: `cfg(foo,values(bar))` | |
| | | |
| = note: `bar` is invalid | |
| = note: `values()` arguments must be string literals, `none()` or `any()` | |
| = note: visit <https://doc.rust-lang.org/nightly/rustc/check-cfg.html> for more details | |