Function validate_failure_policy 

pub fn validate_failure_policy(
    fp: &FailurePolicy,
    context: &str,
) -> ValidationResult

Validate a FailurePolicy’s numeric fields are sane: activeDeadlineSeconds and podStartupDeadlineSeconds must be positive (the kubelet rejects a non-positive Job deadline, and a non-positive grace would fail every pod on its first reconcile); backoffLimit must be non-negative. context names the owner (e.g. "Snapshot").