gistfile1.txt

error: captured variable cannot escape `FnMut` closure body
   --> components/rendering/src/markdown.rs:208:17
    |
176 |       let mut highlighter: Option<CodeBlock> = None;
    |           --------------- variable defined here
...
197 |               .map(|event| {
    |                          - inferred to be a `FnMut` closure
...
208 | /                 Ok(Either::Right(events.into_iter().map(|event| {
209 | |                     match event {
210 | |                         Event::Text(text) => {
211 | |                             // if we are in the middle of a highlighted code block
212 | |                             if let Some(ref mut code_block) = highlighter {
    | |                                                               ----------- variable captured here
...   |
346 | |                     }
347 | |                 })))
    | |____________________^ returns a reference to a captured variable which escapes the closure body
    |
    = note: `FnMut` closures only have access to their captured variables while they are executing...
    = note: ...therefore, they cannot allow references to captured variables to escape