Enum Cause 

pub enum Cause {
    Rejected(u16),
    Timeout,
    Transport,
    Other(String),
}

Why a call did not succeed.

Deliberately coarse. Finer categories would be guesses: the harness sees a failure and a duration, and inventing a taxonomy it cannot actually distinguish would produce a report that looks precise and is not.

Variants

Rejected(u16)

The far end refused, with the status it gave.

Timeout

Nothing came back in time.

Transport

The transport failed — refused connection, closed socket, unreachable host.

Other(String)

Something else, described.

Trait Implementations

impl Clone for Cause

fn clone(&self) -> Cause

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Cause

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

Formats the value using the given formatter.

impl Display for Cause

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

Formats the value using the given formatter.

impl Ord for Cause

fn cmp(&self, other: &Cause) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Cause

fn eq(&self, other: &Cause) -> 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 PartialOrd for Cause

fn partial_cmp(&self, other: &Cause) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for Cause

impl StructuralPartialEq for Cause