RUSTSEC-2019-0031: spin is no longer actively maintained

[github-actions]

spin is no longer actively maintained

Details
Status	unmaintained
Package	spin
Version	0.5.2
URL	mvdnes/spin-rs@7516c80
Date	2019-11-21

The author of the spin crate does not have time or interest to maintain it.

Consider the following alternatives (all of which support no_std):

• conquer-once
• lock_api (a subproject of parking_lot)
  • spinning_top spinlock crate built on lock_api
• spinning

See advisory page for additional details.

[alepez]

Crate:  spin
Title:  spin is no longer actively maintained
Date:   2019-11-21
URL:    https://rustsec.org/advisories/RUSTSEC-2019-0031
Dependency tree:
spin 0.5.2
└── ring 0.16.15
    └── jsonwebtoken 7.2.0
        └── devand-crypto 0.1.0
            ├── devand-web 0.1.0
            └── devand-mailer 0.1.0
                └── devand-web 0.1.0

[alepez]

This depends on ring, reqiuired by jsonwebtoken

See briansmith/ring#921