| error[E0658]: attributes on expressions are experimental |
| --> $DIR/stmt-expr-gated.rs:2:13 |
| | |
| LL | let _ = #[deny(warnings)] if true { |
| | ^^^^^^^^^^^^^^^^^ |
| | |
| = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information |
| = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable |
| = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0658`. |