error[E0658]: use of unstable library feature 'try_reserve': new API | |
--> $DIR/feature-gate-try_reserve.rs:3:7 | |
| | |
LL | v.try_reserve(10); | |
| ^^^^^^^^^^^ | |
| | |
= note: see issue #48043 <https://github.com/rust-lang/rust/issues/48043> for more information | |
= help: add `#![feature(try_reserve)]` to the crate attributes to enable | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0658`. |