error: module `FooBar` should have a snake case name --> $DIR/lint-non-snake-case-modules.rs:4:5 | LL | mod FooBar { | ^^^^^^ help: convert the identifier to snake case: `foo_bar` | note: the lint level is defined here --> $DIR/lint-non-snake-case-modules.rs:1:9 | LL | #![deny(non_snake_case)] | ^^^^^^^^^^^^^^ error: aborting due to 1 previous error