Enum Error 

#[non_exhaustive]
pub enum Error {
    Refused {
        target: Target,
        refusal: Refusal,
    },
    Unwritable {
        target: Target,
        source: Error,
    },
    Manifest {
        source: Error,
    },
    Unreadable {
        source: Error,
    },
}

Why a Compose file isn’t rendered, or read back.

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.

Refused

The environment needs what the target can’t do (the plan’s refusal).

Fields

target: Target

The target that refuses.

refusal: Refusal

The first requirement it can’t meet.

Unwritable

The Compose file couldn’t be written as YAML.

Fields

target: Target

The target whose file it is.

source: Error

What the YAML writer reported.

Manifest

A value of the run manifest was refused by the manifest’s own types: a bug of this backend, which builds every one of them.

Fields

source: Error

What the manifest’s types refused.

Unreadable

A Compose file’s text isn’t YAML (reading its start plan back).

Fields

source: Error

What the YAML reader reported.

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, __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<Error> for Error

fn from(source: ManifestError) -> Error

Converts to this type from the input type.

impl From<Error> for Error

fn from(e: Error) -> RenderError

The error as every backend reports it: the plan’s refusal, or what the target doesn’t support, its cause in its words.