pub const PROGRESS_RANGE: std::ops::RangeInclusive<u8> = 0..=5; pub struct Engine {    con: rusqlite::Connection,    state: engine::State,} pub struct RunOutcome {    /// the relative path to the repositories that could not be found on disk    pub missing_repos_rela_paths: usize,} pub(crate) mod db;pub mod engine; /// Contains all information necessary to run a task.pub(crate) struct Task {    /// The unique name of the task, which must not be changed after creating it.    ///    /// However, if it is changed it will be treated as new kind of task entirely and won't compare    /// to previous runs of the task.    short_name: &'static str,    /// Explain in greater detail what the task is doing.    description: &'static str,    /// `true` if the task cannot be run in parallel as it needs all resources by itself.    execute_exclusive: bool,    /// The actual implementation    execute: &'static (dyn run::Execute + Send + Sync),} pub(crate) struct Run {    /// Our own ID for finding the respective database row.    id: db::Id,    /// The time at which the run was inserted.    duration: std::time::Duration,    error: Option<String>,} pub(crate) mod run;pub(crate) mod trace;