Function rayon_core::unwind::halt_unwinding

pub(crate) fn halt_unwinding<F, R>(func: F) -> Result<R>
where
    F: FnOnce() -> R,

Executes f and captures any panic, translating that panic into a Err result. The assumption is that any panic will be propagated later with resume_unwinding, and hence f can be treated as exception safe.