RUSTSEC-2020-0096: im: TreeFocus lacks bounds on its Send and Sync traits

Description

Affected versions of im contains TreeFocus that unconditionally implements Send and Sync.

This allows a data race in safe Rust code if TreeFocus is extracted from Focus type. Typical users that only use Focus type are not affected.

More Info

https://github.com/bodil/im-rs/issues/157

Patched Versions

Unaffected Versions