File: feature-gate-stmt_expr_attributes.stderr

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error[E0658]: attributes on expressions are experimental
  --> $DIR/feature-gate-stmt_expr_attributes.rs:1:16
   |
LL | const X: i32 = #[allow(dead_code)] 8;
   |                ^^^^^^^^^^^^^^^^^^^
   |
   = 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

error: aborting due to previous error

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