Enum SubsystemBuildError 

#[non_exhaustive]
pub enum SubsystemBuildError {
    MissingDependency {
        dependant: &'static str,
        dependency: &'static str,
        reason: String,
    },
}

Error returned when ServerSubsystemsBuilder::build detects a configuration problem.

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.

MissingDependency

A required dependency between subsystems is not satisfied.

For example: functions define after:storage triggers but no storage subsystem was registered with the builder.

Fields

dependant: &'static str

The subsystem that has an unmet dependency.

dependency: &'static str

The subsystem that is missing.

reason: String

Human-readable explanation.

Trait Implementations

impl Debug for SubsystemBuildError

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

Formats the value using the given formatter.

impl Display for SubsystemBuildError

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

Formats the value using the given formatter.

impl Error for SubsystemBuildError

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.