Enum RepoError 

#[non_exhaustive]
pub enum RepoError {
    Uninitialized,
    Stale,
    NoCommonAncestor,
    NotFound,
    AmbiguousMatch,
    IndexCorrupt {
        context: String,
        cid: Cid,
    },
    VectorDimMismatch {
        index_dim: u32,
        query_dim: usize,
    },
    RetrievalEmpty,
}

Errors from crate::repo - repository lifecycle operations.

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.

Uninitialized

open was called on an op-heads store with no heads. Call crate::repo::ReadonlyRepo::init first.

Stale

A CAS or linearized operation observed state that no longer matches the caller’s expectations (SPEC §6.4 / §6.5). Retry against a fresh ReadonlyRepo.

NoCommonAncestor

Op-DAG is malformed - heads do not share any common ancestor. Cannot happen in a well-formed repository (all heads descend from the root op); indicates corruption or partial import.

NotFound

Query::one (or a similar precondition API) found zero matches.

AmbiguousMatch

Query::one (or a similar precondition API) found multiple matches where exactly one was required.

IndexCorrupt

A secondary index pointed at a block that is missing, malformed, or whose contents contradict the index (wrong label, wrong prop value). Indicates corruption or a partial import; does not trigger on a simple “no such key” miss.

Fields

context: String

Short description of which index + which key was involved.

cid: Cid

The CID the index pointed at.

VectorDimMismatch

A vector-search query’s dimension did not match the index dimension. Each vector index binds to one model + dim at build time; agents must pass a query vector of the exact same shape.

Fields

index_dim: u32

Dimension the index was built at.

query_dim: usize

Dimension of the query vector the caller passed.

RetrievalEmpty

A crate::retrieve::Retriever was executed without any filters or rankers configured. Retrieval needs at least one label / prop / text / vector input to produce a useful result.

audit-2026-04-25 P2-1 / P1-3: the error now spells out the common remediation path (text query needs an embedder) so CLI and MCP callers do not have to guess.

Trait Implementations

impl Debug for RepoError

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

Formats the value using the given formatter.

impl Display for RepoError

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

Formats the value using the given formatter.

impl Error for RepoError

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<RepoError> for Error

fn from(source: RepoError) -> Self

Converts to this type from the input type.