Enum FetchError 

#[non_exhaustive]
pub enum FetchError {
    Unimplemented {
        scheme: String,
        message: String,
    },
    Network {
        message: String,
    },
    UpstreamStatus {
        status: String,
        message: String,
    },
    Extract {
        message: String,
    },
    Io(Error),
    Other {
        message: String,
    },
}

Errors a Fetcher surfaces. Wrapped by super::ResolveError::Fetch at the top-level resolve API.

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.

Unimplemented

The fetcher hasn’t been implemented yet — placeholder for the pre-implementation stubs. Real fetchers never return this.

Fields

scheme: String

message: String

Network

Network IO failed (timeout, DNS, connection refused, …).

Fields

message: String

UpstreamStatus

Server returned a non-success status (HTTP 4xx/5xx, git permission denied, …).

Fields

status: String

message: String

Extract

The fetched archive couldn’t be extracted (corrupt tarball, unrecognised format, …).

Fields

message: String

Io(Error)

IO failed during the fetcher’s local writes (out of disk, permission denied on the cache dir, …).

Other

Some other per-fetcher condition the variants above don’t capture. Use sparingly — prefer adding a typed variant if the condition is recurring.

Fields

message: String

Trait Implementations

impl Debug for FetchError

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

Formats the value using the given formatter.

impl Display for FetchError

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

Formats the value using the given formatter.

impl Error for FetchError

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 FetchError

fn from(e: Error) -> Self

Converts to this type from the input type.