When deriving Debug, what is the best approach to skip a specific struct field that doesn’t implement Debug? For example:

#[derive(Debug)]
pub struct MySettings {
    pub max_size: usize,
    pub max_queue_size: usize,
    // this guy doesn't implement Debug
    pub my_type: Box<dyn MyType + Send + Sync>
}

I can’t add a crate to the Cargo.toml.

Right now I am providing a blank impl for that field like this:

impl std::fmt::Debug for (dyn MyType + Send + Sync){
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        Ok(())
    }
}