error: variable `_InappropriateCamelCasing` should have a snake case name such as `_inappropriate_camel_casing`
  --> $DIR/command-line-lint-group-deny.rs:14:9
   |
LL |     let _InappropriateCamelCasing = true; //~ ERROR should have a snake
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D non-snake-case` implied by `-D bad-style`

error: aborting due to previous error