Enum Error 

#[non_exhaustive]
pub enum Error {
    Fmt(Error),
    Custom(Box<dyn Error + Send + Sync>),
    Json(Error),
}

askama error type

Feature Interaction

If the feature serde_json is enabled an additional error variant Json is added.

Why not failure/error-chain?

Error from error-chain are not Sync which can lead to problems e.g. when this is used by a crate which use failure. Implementing Fail on the other hand prevents the implementation of std::error::Error until specialization lands on stable. While errors impl. Fail can be converted to a type impl. std::error::Error using a adapter the benefits failure would bring to this crate are small, which is why std::error::Error was used.

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.

Fmt(Error)

formatting error

Custom(Box<dyn Error + Send + Sync>)

an error raised by using ? in a template

Json(Error)

json conversion 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, formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

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<Error> for Error

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

Available on crate feature serde_json only.

fn from(err: Error) -> Self

Converts to this type from the input type.