Enum PreflightSeverity 

pub enum PreflightSeverity {
    Informational,
    ResultUndermining,
}

Severity of a preflight warning.

This distinction is critical for interpreting results:

• Informational: Affects sampling efficiency but not result validity. The Bayesian posterior is still trustworthy; you just needed more samples to reach the same confidence level. Examples: high autocorrelation, coarse timer resolution, suboptimal CPU governor.

• ResultUndermining: Violates statistical assumptions the Bayesian model relies on. The posterior confidence may be misplaced because the model’s assumptions don’t hold. Examples: non-monotonic timer (measurements are garbage), severe non-stationarity (distribution changed during measurement), broken harness with mutable state (Fixed-vs-Fixed inconsistency).

Variants

Informational

Sampling efficiency issue - doesn’t invalidate results.

These warnings indicate that the measurement setup is suboptimal and required more samples to reach a conclusion, but the Bayesian posterior is still valid. The result can be trusted.

Examples:

• High autocorrelation (reduces effective sample size)
• Coarse timer resolution (requires more samples)
• Suboptimal CPU governor (adds variance)
• Generator cost asymmetry (may inflate differences but doesn’t invalidate)

ResultUndermining

Statistical assumption violation - undermines result confidence.

These warnings indicate that fundamental assumptions of the Bayesian model may be violated. Even if the posterior appears confident, that confidence may be misplaced.

Examples:

• Non-monotonic timer (measurements are meaningless)
• Severe non-stationarity (distribution changed during measurement)
• Fixed-vs-Fixed inconsistency with randomization (likely mutable state bug)

Trait Implementations

impl Clone for PreflightSeverity

fn clone(&self) -> PreflightSeverity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PreflightSeverity

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PreflightSeverity

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for PreflightSeverity

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for PreflightSeverity

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for PreflightSeverity

impl Eq for PreflightSeverity

impl StructuralPartialEq for PreflightSeverity