Enum SyncError 

#[non_exhaustive]
pub enum SyncError {
    Tree(TreeError),
    Validation {
        errors: Vec<PackValidationError>,
    },
    Exec(ExecError),
    Halted(Box<HaltedContext>),
    WorkspaceBusy {
        workspace: PathBuf,
        lock_path: PathBuf,
    },
    Lockfile {
        path: PathBuf,
        source: LockfileError,
    },
    InvalidOnlyGlob {
        pattern: String,
        source: Error,
    },
    EventLogMigration(ManifestError),
    SchedulerCancelled,
}

Error taxonomy surfaced by run.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Tree(TreeError)

The pack-tree walker failed (loader error, git error, cycle, …).

Validation

One or more plan-phase validators flagged the graph.

Fields

errors: Vec<PackValidationError>

Aggregated errors from manifest-level + graph-level validators.

Exec(ExecError)

An action executor returned an error.

Retained for backward compatibility; new call sites should prefer SyncError::Halted which carries full pack + action context. Kept non-deprecated because From<ExecError> still materialises the variant for non-sync-loop callers (e.g. ad-hoc helpers).

Halted(Box<HaltedContext>)

Action execution halted; full context (pack, action index, error, optional recovery hint) lives in HaltedContext. This is the variant the sync driver emits — SyncError::Exec is only surfaced by ancillary code paths.

WorkspaceBusy

Another grex process (or thread) already holds the workspace-level lock. The running sync refused to start to avoid racing two concurrent walkers into the same workspace. If the lock file at lock_path is stale (no other grex is actually running), remove it by hand.

Fields

workspace: PathBuf

Resolved workspace directory that the current run tried to lock.

lock_path: PathBuf

Sidecar lock file that is currently held.

Lockfile

Reading or parsing the resolved-state lockfile failed. Surfaced as its own variant (rather than folded into Validation) because a corrupt / unreadable lockfile is an I/O or schema fault, not a dependency-satisfaction fault. Resolution is operator-level (restore a backup, delete the file, re-sync), not author-level.

Fields

path: PathBuf

Lockfile path that failed to load.

source: LockfileError

Underlying lockfile error.

InvalidOnlyGlob

One of the --only <GLOB> patterns failed to compile. Surfaced as its own variant so the CLI can map it to a dedicated usage error exit code instead of the generic sync-failure bucket.

Fields

pattern: String

The raw pattern string that failed to compile.

source: Error

Underlying globset error.

EventLogMigration(ManifestError)

Migrating the v1.x event log (grex.jsonl) to the v2 canonical path (.grex/events.jsonl) failed. Operator-level resolution (check filesystem permissions, free disk space, then retry).

SchedulerCancelled

Cooperative cancellation fired (Ctrl-C / SIGTERM) during a parallel sync. v1.2.0 Stage 1.g wires the rayon walker to surface this distinct-from-failure variant so the CLI can exit with a dedicated cancellation code instead of a generic sync error. Dormant until Stage 1.g — the existing CLI does not yet emit it.

Trait Implementations

impl Clone for SyncError

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SyncError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for SyncError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for SyncError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<ExecError> for SyncError

fn from(source: ExecError) -> Self

Converts to this type from the input type.

impl From<TreeError> for SyncError

fn from(source: TreeError) -> Self

Converts to this type from the input type.