error[E0658]: `#[track_caller]` on closures is currently unstable
  --> $DIR/feature-gate-closure_track_caller.rs:5:20
   |
LL |     let _closure = #[track_caller] || {};
   |                    ^^^^^^^^^^^^^^^
   |
   = note: see issue #87417 <https://github.com/rust-lang/rust/issues/87417> for more information
   = help: add `#![feature(closure_track_caller)]` to the crate attributes to enable

error[E0658]: `#[track_caller]` on closures is currently unstable
  --> $DIR/feature-gate-closure_track_caller.rs:6:22
   |
LL |     let _generator = #[track_caller] || { yield; };
   |                      ^^^^^^^^^^^^^^^
   |
   = note: see issue #87417 <https://github.com/rust-lang/rust/issues/87417> for more information
   = help: add `#![feature(closure_track_caller)]` to the crate attributes to enable

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0658`.