RUSTSEC-2021-0139: ansi_term is Unmaintained

> ansi_term is Unmaintained

| Details | |
| ------------------- | ---------------------------------------------- |
| Status | unmaintained |
| Package | `ansi_term` |
| Version | `0.12.1` |
| URL | [https://github.com/ogham/rust-ansi-term/issues/72](https://github.com/ogham/rust-ansi-term/issues/72) |
| Date | 2021-08-18 |

The maintainer has adviced this crate is deprecated and will not
receive any maintenance.

The crate does not seem to have much dependencies and may or may not be ok to use as-is.

Last release seems to have been three years ago.

## Possible Alternative(s)

The below list has not been vetted in any way and may or may not contain alternatives;

- [anstyle](https://github.com/epage/anstyle)
- [nu-ansi-term](https://crates.io/crates/nu-ansi-term)
- [yansi](https://crates.io/crates/yansi)

See [advisory page](https://rustsec.org/advisories/RUSTSEC-2021-0139.html) for additional details.

Start by locating references to the ansi_term crate in the repository's Cargo manifests and lockfiles, then review the linked upstream issue and RustSec advisory. Determine which proposed replacement, if any, fits the current usage and verify that the dependency change preserves the affected builds and tests.

Written by the indexing model from the issue text.