error: variable `X` should have a snake case name --> $DIR/expr_attr_paren_order.rs:17:17 | LL | let X = 0; | ^ help: convert the identifier to snake case (notice the capitalization): `x` | note: the lint level is defined here --> $DIR/expr_attr_paren_order.rs:15:37 | LL | #[allow(non_snake_case)] #[deny(non_snake_case)] ( | ^^^^^^^^^^^^^^ error: aborting due to 1 previous error