Enum ToolLoopError 

#[non_exhaustive]
pub enum ToolLoopError {
    Model(TextModelError),
    StepBudgetExhausted {
        steps: Vec<StepUsage>,
    },
    TokenBudgetExhausted {
        used: u64,
        steps: Vec<StepUsage>,
    },
    InvalidToolSchema {
        tool: String,
        reason: String,
    },
}

Why a tool loop stopped without a usable answer (issue #665).

#[non_exhaustive]: the loop is new and its failure set will grow.

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.

Model(TextModelError)

The model failed. The wrapped error’s own Display already scrubs any provider text.

StepBudgetExhausted

The model kept asking for tools and the step budget ran out. The steps recorded so far are kept so a caller can cost or log work that led nowhere.

Fields

steps: Vec<StepUsage>

TokenBudgetExhausted

The model’s calls spent more input + output tokens than the budget allowed. used is the cumulative total that crossed the limit.

Fields

used: u64

steps: Vec<StepUsage>

InvalidToolSchema

A tool’s parameters schema could not be honoured: it used a keyword this validator does not implement (a $ref, a pattern, an if) or was malformed. Nothing was called.

Fields

tool: String

reason: String

Trait Implementations

impl Clone for ToolLoopError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolLoopError

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

Formats the value using the given formatter.

impl Display for ToolLoopError

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

Formats the value using the given formatter.

impl Eq for ToolLoopError

impl Error for ToolLoopError

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 PartialEq for ToolLoopError

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ToolLoopError