RUSTSEC-2020-0131: rcu_cell: Send/Sync bound needed on T for Send/Sync impl of RcuCell

Description

Affected versions of this crate unconditionally implement Send/Sync for RcuCell<T>. This allows users to send T: !Send to other threads (while T enclosed within RcuCell<T>), and allows users to concurrently access T: !Sync by using the APIs of RcuCell<T> that provide access to &T.

This can result in memory corruption caused by data races.

More Info

https://github.com/Xudong-Huang/rcu_cell/issues/3

Patched Versions