Enum CrawlerBuildError 

#[non_exhaustive]
pub enum CrawlerBuildError {
    MissingRequestHandler,
    MissingStorage,
    ZeroMaxConcurrency,
    InvalidConcurrencyBounds,
    ZeroResultsCapacity,
    Config(ConfigError),
    Storage(StorageError),
}

An error produced while building a crawler.

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.

MissingRequestHandler

No request handler was supplied.

MissingStorage

Neither the builder nor its configuration supplied storage.

ZeroMaxConcurrency

The configured concurrency is zero.

InvalidConcurrencyBounds

The configured dynamic scheduler options are invalid.

ZeroResultsCapacity

The configured result channel capacity is zero.

Config(ConfigError)

Configuration resolution failed.

Storage(StorageError)

Storage initialization failed.

Trait Implementations

impl Debug for CrawlerBuildError

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

Formats the value using the given formatter.

impl Display for CrawlerBuildError

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

Formats the value using the given formatter.

impl Error for CrawlerBuildError

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<ConfigError> for CrawlerBuildError

fn from(source: ConfigError) -> Self

Converts to this type from the input type.

impl From<StorageError> for CrawlerBuildError

fn from(source: StorageError) -> Self

Converts to this type from the input type.