Enum BuildError 

#[non_exhaustive]
pub enum BuildError {
    PendingCommands,
    WorldRunning,
    WorldMutationPoisoned,
    LeaseMismatch,
    LiveLeaseAlreadyAttached,
    UnknownStage {
        label: String,
    },
    UnknownSystem {
        label: String,
    },
    UnknownSystemSet {
        label: String,
    },
    DuplicateSystemSet {
        label: String,
    },
    DuplicateSystemLabel {
        label: String,
    },
    SystemInitialization {
        system: String,
        detail: String,
    },
    CrossOperationEdge {
        from: String,
        to: String,
    },
    CrossStageSystemEdge {
        from: String,
        to: String,
    },
    MissingRequiredResource {
        name: String,
    },
    UnregisteredEventRole {
        system: String,
        event: String,
    },
    EventOperationMismatch {
        system: String,
        event: String,
        event_operation: StageOperation,
        system_operation: StageOperation,
    },
    MissingEventProducer {
        system: String,
        event: String,
    },
    UnreachableEventProducer {
        producer: String,
        consumer: String,
        event: String,
    },
    SelfEdge {
        label: String,
    },
    Cycle {
        path: Vec<String>,
    },
    FixedUpdateWithoutConfig,
    FixedConfigWithoutFixedUpdate,
    StageOperationMismatch {
        label: String,
    },
    InvalidStageFlushMode {
        label: String,
        mode: FlushMode,
    },
    InvalidSystemFlushMode {
        label: String,
        mode: FlushMode,
    },
    WorldBuild(WorldError),
}

Schedule construction failure before first execution.

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.

PendingCommands

World still has unflushed deferred commands.

WorldRunning

World run guard is active; build requires an idle world.

WorldMutationPoisoned

Change-tick exhaustion poisoned the world.

LeaseMismatch

Attached execution lease does not match this schedule.

LiveLeaseAlreadyAttached

Another compiled schedule already holds a live world lease.

UnknownStage

Referenced stage label was never registered.

Fields

label: String

UnknownSystem

Ordering edge names a system that was never added.

Fields

label: String

UnknownSystemSet

System or ordering edge names an unregistered set.

Fields

label: String

DuplicateSystemSet

Same system-set label registered twice.

Fields

label: String

DuplicateSystemLabel

Two systems share the same label.

Fields

label: String

SystemInitialization

Build-time initializer for a system returned an error.

Fields

system: String

detail: String

CrossOperationEdge

Ordering edge would cross Update/Render operations.

Fields

from: String

to: String

CrossStageSystemEdge

System ordering edge spans different stages.

Fields

from: String

to: String

MissingRequiredResource

System declared a resource lock for a type not present in the world.

Fields

name: String

UnregisteredEventRole

System event role references an unregistered event or lifecycle channel.

Fields

system: String

event: String

EventOperationMismatch

Frame-retained event operation does not match the system’s stage operation.

Fields

system: String

event: String

event_operation: StageOperation

system_operation: StageOperation

MissingEventProducer

Internal frame event consumer has no emitting producer.

Fields

system: String

event: String

UnreachableEventProducer

Producer is not ordered before the consumer for the same frame event.

Fields

producer: String

consumer: String

event: String

SelfEdge

System depends on itself in the ordering graph.

Fields

label: String

Cycle

Stage-local ordering graph contains a cycle.

Fields

path: Vec<String>

FixedUpdateWithoutConfig

FixedUpdate systems exist but no fixed timestep was configured.

FixedConfigWithoutFixedUpdate

Fixed timestep configured without a FixedUpdate stage.

StageOperationMismatch

Re-adding a stage label with a different operation.

Fields

label: String

InvalidStageFlushMode

Flush mode is invalid for the stage’s operation.

Fields

label: String

mode: FlushMode

InvalidSystemFlushMode

Flush mode is invalid for the system’s stage operation.

Fields

label: String

mode: FlushMode

WorldBuild(WorldError)

Underlying world construction or attachment failed.

Trait Implementations

impl Clone for BuildError

fn clone(&self) -> BuildError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BuildError

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

Formats the value using the given formatter.

impl Display for BuildError

Available on crate feature std only.

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

Formats the value using the given formatter.

impl Eq for BuildError

impl Error for BuildError

Available on crate feature std only.

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<WorldError> for BuildError

fn from(value: WorldError) -> Self

Converts to this type from the input type.

impl PartialEq for BuildError

fn eq(&self, other: &BuildError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for BuildError