Enum Error

#[non_exhaustive]
pub enum Error {
    UrlNotSupported,
    NotFound,
    OperationNotSupported,
    Other(Box<dyn StdError + Sync + Send>),
    Unknown,
}

Credential provider error type.

UrlNotSupported and NotFound errors both cause Cargo to attempt another provider, if one is available. The other variants are fatal.

Note: Do not add a tuple variant, as it cannot be serialized.

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.

UrlNotSupported

Registry URL is not supported. This should be used if the provider only works for some registries. Cargo will try another provider, if available

NotFound

Credentials could not be found. Cargo will try another provider, if available

OperationNotSupported

The provider doesn’t support this operation, such as a provider that can’t support ‘login’ / ‘logout’

Other(Box<dyn StdError + Sync + Send>)

The provider failed to perform the operation. Other providers will not be attempted

Unknown

A new variant was added to this enum since Cargo was built

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Error

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

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<&str> for Error

fn from(err: &str) -> Self

Converts to this type from the input type.

impl<T: StdError + Send + Sync + 'static> From<Box<T>> for Error

fn from(value: Box<T>) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(value: Error) -> Self

Converts to this type from the input type.

impl From<String> for Error

fn from(message: String) -> Self

Converts to this type from the input type.

impl Serialize for Error

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 24 bytes

Size for each variant:

• UrlNotSupported: 0 bytes
• NotFound: 0 bytes
• OperationNotSupported: 0 bytes
• Other: 16 bytes
• Unknown: 0 bytes