RUSTSEC-2021-0146: Crate `twoway` deprecated by the author

[github-actions[bot]]

Crate twoway deprecated by the author

Details
Status	unmaintained
Package	twoway
Version	0.1.8
URL	https://github.com/bluss/twoway
Date	2021-05-20

The commit e99b3c7 releasing version 0.2.2 explicitely deprecates twoway in favour of memchr crate.

See advisory page for additional details.