| #![feature(staged_api)] | |
| #![unstable(feature = "unstable_crate_feature", issue = "none")] | |
| //@ is "$.index[?(@.name=='unstable_crate')].stability.level" '"unstable"' | |
| //@ is "$.index[?(@.name=='unstable_crate')].stability.feature" '"unstable_crate_feature"' | |
| //@ !has "$.index[?(@.name=='unstable_crate')].stability.since" |