Struct Error 

pub struct Error(/* private fields */);

Type-erased error wrapper for when you don’t need to preserve the concrete type.

This is a newtype wrapper around Box<dyn StdError> that enables proper trait resolution for typed catches. It does NOT implement Error itself (to avoid trait impl conflicts), but provides access to the inner error.

Implementations

impl Error

pub fn new<E: StdError + Send + Sync + 'static>(e: E) -> Self

Create from any error type.

pub fn from_box(e: Box<dyn StdError + Send + Sync + 'static>) -> Self

Create from a boxed error.

pub fn as_error(&self) -> &(dyn StdError + Send + Sync + 'static)

Get the inner error as a trait object reference.

pub fn as_dyn_error(&self) -> &(dyn StdError + 'static)

Get the inner error as a trait object reference (non-Send/Sync for Error trait compat).

pub fn downcast_ref<T: StdError + 'static>(&self) -> Option<&T>

Try to downcast to a specific error type.

pub fn downcast<T: StdError + 'static>(self) -> Result<T, Self>

Try to downcast and consume the error.

pub fn into_inner(self) -> Box<dyn StdError + Send + Sync + 'static>

Get the inner boxed error.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl<E: StdError + Send + Sync + 'static> From<E> for Error

Available on crate feature std only.

fn from(e: E) -> Self

Converts to this type from the input type.