Enum Error 

#[non_exhaustive]
pub enum Error {
    Busy(String),
    Unsupported(String),
    DeviceLost(String),
    Backend {
        backend: &'static str,
        operation: &'static str,
        code: i32,
        message: Box<str>,
    },
    Execution {
        source: Arc<Error>,
    },
    Cancelled,
    Message(String),
    Compile {
        message: String,
        diagnostics: Vec<Diagnostic>,
        report: Option<Box<Value>>,
    },
    Io(Error),
    Json(Error),
    Library(Error),
    Download(Box<Error>),
    Runtime {
        context: String,
        code: i32,
        message: String,
    },
    Context {
        context: String,
        source: Box<Error>,
    },
}

A runtime, validation, provisioning or compiler failure.

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.

Busy(String)

A mapped allocation or exhausted prepared run capacity prevents submission.

Unsupported(String)

Hardware or the selected native runtime cannot provide a requested capability.

DeviceLost(String)

A device failure left memory contents or completion uncertain.

Backend

A native backend failure with its original status code.

Fields

backend: &'static str

Native backend name.

operation: &'static str

Operation that failed.

code: i32

Native status or command state.

message: Box<str>

Native diagnostic text. A boxed slice keeps the success-path Result layout within the pre-existing native error size.

Execution

A retained asynchronous failure, shared by completion observers.

Fields

source: Arc<Error>

Original structured failure, including backend and node context.

Cancelled

Work was cancelled before completion.

Message(String)

Invalid input or a contextual diagnostic.

Compile

Structured diagnostics from a failed Loom compiler invocation.

Fields

message: String

Rendered diagnostic summary.

diagnostics: Vec<Diagnostic>

Complete structured diagnostics.

report: Option<Box<Value>>

Compiler report produced before failure, when requested and available.

Io(Error)

An operating-system failure, preserving its error kind and source.

Json(Error)

Invalid JSON, preserving the parser’s location and source.

Library(Error)

A dynamic library or symbol could not be loaded.

Download(Box<Error>)

A network provisioning failure.

Runtime

Legacy native status retained for source compatibility. The native 0.8 runtime reports structured errors through other variants.

Fields

context: String

Operation that failed.

code: i32

Native HRX status code.

message: String

Owned native status message.

Context

Adds context while preserving an underlying failure.

Fields

context: String

Operation that failed.

source: Box<Error>

Underlying failure.

Implementations

impl Error

pub fn compiler_diagnostics(&self) -> Option<&[Diagnostic]>

Structured compiler diagnostics through any contextual wrappers.

pub fn compiler_report(&self) -> Option<&Value>

Compiler report retained from a failed invocation, when requested.

pub fn context(self, context: impl Into<String>) -> Self

Attach context without flattening the underlying error.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.