Struct DependencyOutcome 

pub struct DependencyOutcome {
    pub yanked: Option<(ConcreteVersion, RemovalStatus)>,
    pub deprecation: Option<Deprecation>,
    pub fetch_failure: Option<FetchFailure>,
    pub no_comparable_versions: bool,
}

Everything the lifecycle fetch learned about one package, keyed by its normalized name.

All three channels can hold simultaneously for the same package — this is load-bearing, not an incidental shape. The D5 status gate in generate_diagnostics_from_cache reads the Self::deprecation and Self::yanked entries for the same normalized name together and compares their RemovalStatus, and on the didChange path a surviving deprecation can coexist with a later fetch failure. A single enum variant per package could not express that overlap.

Fields

yanked: Option<(ConcreteVersion, RemovalStatus)>

The version found yanked (the in-use version, or latest when only latest itself is yanked), paired with its RemovalStatus. See VersionData::outcomes’s prior semantics (#233/#263).

deprecation: Option<Deprecation>

Package-level deprecation finding (#205). See Deprecation.

fetch_failure: Option<FetchFailure>

Registry fetch errored, timed out, or was never attempted (#267). See FetchFailure.

no_comparable_versions: bool

The registry fetch succeeded (no Self::fetch_failure) but produced zero comparable versions — e.g. a real GitHub repository whose only tags don’t parse as full major.minor.patch semver (dtolnay/rust-toolchain’s sole tag v1, issue #550). Distinct from both an absent DependencyOutcome entry (“never fetched”) and Self::fetch_failure (“couldn’t be asked”): this package demonstrably exists, so R5 must not claim it is unknown.

Implementations

impl DependencyOutcome

pub const fn is_empty(&self) -> bool

True when none of the four channels are set.

Trait Implementations

impl Clone for DependencyOutcome

fn clone(&self) -> DependencyOutcome

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DependencyOutcome

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

Formats the value using the given formatter.

impl Default for DependencyOutcome

fn default() -> DependencyOutcome

Returns the “default value” for a type.

impl PartialEq for DependencyOutcome

fn eq(&self, other: &DependencyOutcome) -> 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 StructuralPartialEq for DependencyOutcome