1 error[E0658]: repr with 128-bit type is unstable
2 --> $DIR/feature-gate-repr128.rs:2:1
9 = note: for more information, see https://github.com/rust-lang/rust/issues/56071
10 = help: add `#![feature(repr128)]` to the crate attributes to enable
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0658`.