Enum guppy::errors::Error

#[non_exhaustive]
pub enum Error {
    CommandError(MetadataError),
    MetadataParseError(Error),
    PackageGraphConstructError(String),
    UnknownPackageId(PackageId),
    UnknownFeatureId(PackageId, Option<String>),
    PackageGraphInternalError(String),
    // some variants omitted
}

Error type describing the sorts of errors guppy can return.

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.

CommandError(MetadataError)

An error occurred while executing cargo metadata.

MetadataParseError(Error)

An error occurred while parsing cargo metadata JSON.

PackageGraphConstructError(String)

An error occurred while constructing a PackageGraph from parsed metadata.

UnknownPackageId(PackageId)

A package ID was unknown to this PackageGraph.

UnknownFeatureId(PackageId, Option<String>)

A feature ID was unknown to this FeatureGraph.

PackageGraphInternalError(String)

An internal error occurred within this PackageGraph.

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, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

fn description(&self) -> &str

Deprecated since 1.41.0:

use the Display impl or to_string()

if let Err(e) = "xc".parse::<u32>() { // Print e itself, no need for description(). eprintln!("Error: {}", e); }

fn cause(&self) -> Option<&dyn Error>

Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting