Enum MessagesFilterReloadError 

pub enum MessagesFilterReloadError {
    Parse {
        spec: String,
        reason: String,
    },
    SubscriberNotInstalled,
    Reload(String),
}

Why a reload_messages_filter call failed.

Variants

Parse

The directive didn’t parse as EnvFilter syntax. The typed-option validator already rejects bad strings at :set time; reaching this variant means the validator missed something.

Fields

spec: String

reason: String

SubscriberNotInstalled

install_messages_subscriber was never called for this process. Production boot always installs; test paths that exercise the App without going through App::new can observe this.

Reload(String)

tracing_subscriber::reload::Handle::modify returned an error (typically because the underlying layer was dropped). Should not happen in production but the error type carries the message for diagnostics.

Trait Implementations

impl Debug for MessagesFilterReloadError

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

Formats the value using the given formatter.

impl Display for MessagesFilterReloadError

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

Formats the value using the given formatter.

impl Error for MessagesFilterReloadError

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.