Improper Input Validation in once_cell

If during the first dereference of Lazy the initialization function panics, subsequent dereferences will execute std::hints::unreachableunchecked. Applications with panic = "abort" are not affected, as there will be no subsequent dereferences...

Panic during initialization of Lazy<T> might trigger undefined behavior

If during the first dereference of Lazy the initialization function panics, subsequent dereferences will execute std::hints::unreachableunchecked. Applications with panic = "abort" are not affected, as there will be no subsequent dereferences...