RUSTSEC-2020-0137: AtomicBox<T> lacks bound on its Send and Sync traits allowing data races

[github-actions]

AtomicBox<T> lacks bound on its Send and Sync traits allowing data races

Details
Package	lever
Version	0.1.1-alpha.11
URL	vertexclique/lever#15
Date	2020-11-10

AtomicBox<T> is a Box type designed to be used across threads, however, it
implements the Send and Sync traits for all types T.

This allows non-Send types such as Rc and non-Sync types such as Cell to
be used across thread boundaries which can trigger undefined behavior and
memory corruption.

See advisory page for additional details.

[pcmanus]

Closing as this is outdated (the query planner code in rust, which was using this, has been removed).