Enum StaleReason 

pub enum StaleReason {
    Deleted,
    ResidueOnly,
}

Why a ManageError::StaleSnapshot was raised. The re-check that fires immediately before a mutating write can fail in two observably different ways, and both deserve their own operator- facing wording.

• Deleted — the re-check saw nothing at all under the entity’s prefix (or the singleton key was NotFound). A concurrent delete completed cleanly.

• ResidueOnly — the re-check found keys, but none of them carry branch data: only *.lock files and / or a PROTECTED# marker remain. Operational metadata can outlive user-visible branch data when a concurrent delete runs partially, and writing HEAD against that residue would re-create the invalid-HEAD condition the doctor exists to prevent.

Variants

Deleted

Nothing remains under the entity’s prefix (or its singleton key returned NotFound).

ResidueOnly

Only operational metadata (lock files and / or a PROTECTED# marker) remains under the entity’s prefix.

Trait Implementations

impl Clone for StaleReason

fn clone(&self) -> StaleReason

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StaleReason

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

Formats the value using the given formatter.

impl Display for StaleReason

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

Formats the value using the given formatter.

impl PartialEq for StaleReason

fn eq(&self, other: &StaleReason) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for StaleReason

impl Eq for StaleReason

impl StructuralPartialEq for StaleReason