Enum UpdateError 

#[non_exhaustive]
pub enum UpdateError {
    Provider(ProviderError),
    NoMatchingAsset {
        target: String,
    },
    MissingSignature {
        asset: String,
    },
    BadSignature {
        asset: String,
    },
    BadChecksum {
        asset: String,
    },
    SelfTestFailed,
    SwapFailed(String),
    NoReleaseSource,
    NoPublicKey,
    DowngradeRefused {
        target: Version,
        current: Version,
    },
    Archive(String),
    Pattern(String),
    Io(Arc<Error>),
}

Every failure mode the self-update flow can surface.

Clone is derived so callers can route errors through retry policies or embed them in progress events without losing the underlying io::Error. The Io variant wraps in Arc — same pattern as rtb-forge::ProviderError and rtb-credentials::CredentialError.

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.

Provider(ProviderError)

The upstream rtb_forge::ProviderError surfaced a failure.

NoMatchingAsset

No asset on the release matched the host platform.

Fields

target: String

The host target triple we tried to match.

MissingSignature

Required signature file was absent from the release.

Fields

asset: String

The asset filename we looked for a signature for.

BadSignature

Ed25519 signature did not verify against any trusted public key.

Fields

asset: String

The asset filename whose signature failed.

BadChecksum

SHA-256 checksum did not match the checksums asset.

Fields

asset: String

The asset filename whose checksum failed.

SelfTestFailed

The staged binary refused --version (or did not match the release tag). Swap is refused.

SwapFailed(String)

self-replace failed to swap.

NoReleaseSource

ToolMetadata::release_source is None — the tool has not been configured for self-update.

NoPublicKey

ToolMetadata::update_public_keys is empty — signatures cannot be verified so updates are refused as a security policy.

DowngradeRefused

The caller asked for a downgrade (target < current) without --force. Guards against a bad --to value turning into a permanent regression.

Fields

target: Version

The version the caller requested.

current: Version

The version currently installed.

Archive(String)

Archive extraction failed. Includes tar/gzip errors.

Pattern(String)

Asset pattern had a {version} placeholder but no value to fill, or matched zero assets.

Io(Arc<Error>)

I/O error during cache-dir or swap step.

Trait Implementations

impl Clone for UpdateError

fn clone(&self) -> UpdateError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for UpdateError

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

Formats the value using the given formatter.

impl Diagnostic for UpdateError

fn code(&self) -> Option<Box<dyn Display + '_>>

Unique diagnostic code that can be used to look up more information about this Diagnostic. Ideally also globally unique, and documented in the toplevel crate’s documentation for easy searching. Rust path format (foo::bar::baz) is recommended, but more classic codes like E0123 or enums will work just fine.

fn help(&self) -> Option<Box<dyn Display + '_>>

Additional help text related to this Diagnostic. Do you have any advice for the poor soul who’s just run into this issue?

fn severity(&self) -> Option<Severity>

Diagnostic severity. This may be used by ReportHandlers to change the display format of this diagnostic.

fn labels(&self) -> Option<Box<dyn Iterator<Item = LabeledSpan> + '_>>

Labels to apply to this Diagnostic’s Diagnostic::source_code

fn source_code(&self) -> Option<&dyn SourceCode>

Source code to apply this Diagnostic’s Diagnostic::labels to.

fn related(&self) -> Option<Box<dyn Iterator<Item = &dyn Diagnostic> + '_>>

Additional related Diagnostics.

fn url(&self) -> Option<Box<dyn Display + '_>>

URL to visit for a more detailed explanation/help about this Diagnostic.

fn diagnostic_source(&self) -> Option<&dyn Diagnostic>

The cause of the error.

impl Display for UpdateError

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

Formats the value using the given formatter.

impl Error for UpdateError

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<Arc<Error>> for UpdateError

fn from(source: Arc<Error>) -> Self

Converts to this type from the input type.

impl From<Error> for UpdateError

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<ProviderError> for UpdateError

fn from(source: ProviderError) -> Self

Converts to this type from the input type.