{"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
        let mut command: Vec<&dyn AsRef<OsStr>> = Vec::with_capacity(self.rustc_command.len());
    pub fn rustc_command_vec(&self) -> Vec<&dyn AsRef<OsStr>> {
        for arg in self.rustc_command.iter() {