Advisories for Cargo/Scottqueue package

Affected versions of this crate unconditionally implements Send/Sync for Queue<T>. This allows (1) creating data races to a T: !Sync and (2) sending T: !Send to other threads, resulting in memory corruption or other undefined behavior.

An issue was discovered in the scottqueue crate through 2020-11-15 for Rust. There are unconditional implementations of Send and Sync for Queue. This allows (1) creating data races to a T: !Sync and (2) sending T: !Send to other threads, resulting in memory corruption or other undefined behavior.