|  | warning: could not parse code block as Rust code | 
|  | --> $DIR/ignore-block-help.rs:3:5 | 
|  | | | 
|  | LL |   /// ```ignore (to-prevent-tidy-error) | 
|  | |  _____^ | 
|  | LL | | /// let heart = '❤️'; | 
|  | LL | | /// ``` | 
|  | | |_______^ | 
|  | | | 
|  | help: `ignore` code blocks require valid Rust code for syntax highlighting; mark blocks that do not contain Rust code as text: ```text | 
|  | --> $DIR/ignore-block-help.rs:3:5 | 
|  | | | 
|  | LL | /// ```ignore (to-prevent-tidy-error) | 
|  | |     ^^^ | 
|  | = note: error from rustc: character literal may only contain one codepoint | 
|  | = note: `#[warn(rustdoc::invalid_rust_codeblocks)]` on by default | 
|  |  | 
|  | warning: 1 warning emitted | 
|  |  |