Enum PoolError 

#[non_exhaustive]
pub enum PoolError<E: Error> {
    Connect(E),
    Draining,
    Timeout,
    Closed,
    AtCapacity,
}

Errors returned by pool operations.

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.

Connect(E)

Connection creation failed.

Draining

Pool is draining (shutting down).

Timeout

Checkout timed out waiting for an available connection.

Closed

Pool is closed.

AtCapacity

Pool is at maximum capacity.

Trait Implementations

impl<E: Debug + Error> Debug for PoolError<E>

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

Formats the value using the given formatter.

impl<E: Error> Display for PoolError<E>

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

Formats the value using the given formatter.

impl<E: Error + 'static> Error for PoolError<E>

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.