Enum ComposeError 

pub enum ComposeError {
    Cycle {
        digest: String,
        via: String,
    },
    TooDeep,
    Unreadable(String),
    AmbiguousTool {
        tool: String,
        first: String,
        second: String,
        fix: String,
    },
    RealmProvidesNoSuchTool {
        selector: String,
        realm: String,
        tool: String,
        providers: String,
    },
    ConflictingPayload(Box<PayloadConflict>),
}

Variants

Cycle

Fields

digest: String

via: String

TooDeep

Unreadable(String)

AmbiguousTool

A name two layers of one composition both provide, which the pin has not chosen between (REQ-REALM2-001 clause 4d).

The old message named two layer DIGESTS and then said “Restrict the pin’s tools” — advice structurally incapable of working, because tools filtered by NAME and the collision is one name. It must instead name both providers WITH their realms and show the qualified form to copy, which is a fix the reader can actually apply.

Fields

tool: String

first: String

second: String

fix: String

RealmProvidesNoSuchTool

The pin qualified a name with a realm that provides no such tool. Failing closed matters here: silently falling back to the other realm would run bytes the pin explicitly did not choose.

Fields

selector: String

realm: String

tool: String

providers: String

ConflictingPayload(Box<PayloadConflict>)

Boxed: six strings inline would make every ComposeError — and so every ResolveError — large enough to move on the happy path.

Trait Implementations

impl Debug for ComposeError

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

Formats the value using the given formatter.

impl Display for ComposeError

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

Formats the value using the given formatter.

impl Error for ComposeError

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<Box<PayloadConflict>> for ComposeError

fn from(source: Box<PayloadConflict>) -> Self

Converts to this type from the input type.

impl From<ComposeError> for ResolveError

fn from(source: ComposeError) -> Self

Converts to this type from the input type.