#[derive(Clone, Debug, Default, Eq, PartialEq)]pub(crate) struct ProcessState {    pub(crate) has_exited: bool,    pub(crate) exit_code: Option<i32>,    pub(crate) failure_message: Option<String>,}impl ProcessState {    pub(crate) fn exited(&self, exit_code: Option<i32>) -> Self {        Self {            has_exited: true,            exit_code,            failure_message: self.failure_message.clone(),        }    }    pub(crate) fn failed(&self, message: String) -> Self {        Self {            has_exited: true,            exit_code: self.exit_code,            failure_message: Some(message),        }    }}