warning: variable `WrongCase` should have a snake case name
  --> $DIR/mention-lint-group-in-default-level-lint-note-issue-65464.rs:12:9
   |
LL |     let WrongCase = 1;
   |         ^^^^^^^^^ help: convert the identifier to snake case: `wrong_case`
   |
   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default

warning: variable `WrongCase` should have a snake case name
  --> $DIR/mention-lint-group-in-default-level-lint-note-issue-65464.rs:19:9
   |
LL |     let WrongCase = 2;
   |         ^^^^^^^^^ help: convert the identifier to snake case: `wrong_case`
   |
note: the lint level is defined here
  --> $DIR/mention-lint-group-in-default-level-lint-note-issue-65464.rs:18:12
   |
LL |     #[warn(nonstandard_style)]
   |            ^^^^^^^^^^^^^^^^^
   = note: `#[warn(non_snake_case)]` implied by `#[warn(nonstandard_style)]`

warning: 2 warnings emitted