Updating crates.io index
 Downloading crates ...
  Downloaded minimad v0.9.0
  Downloaded once_cell v1.8.0
  Downloaded crossterm v0.22.1
  Downloaded signal-hook-registry v1.4.0
  Downloaded signal-hook v0.3.10
  Downloaded termimad v0.20.0
  Downloaded proc-macro2 v1.0.32
  Downloaded signal-hook-mio v0.2.1
  Downloaded crossbeam v0.8.1
  Downloaded crossbeam-deque v0.8.1
  Downloaded coolor v0.3.1
error: failed to parse manifest at `/build/.cargo/registry/src/github.com-1ecc6299db9ec823/coolor-0.3.1/Cargo.toml`

Caused by:
  feature `edition2021` is required

  The package requires the Cargo feature called `edition2021`, but that feature is not stabilized in this version of Cargo (1.55.0).
  Consider trying a newer version of Cargo (this may require the nightly release).
  See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#edition-2021 for more information about the status of this feature.
==> ERROR: A failure occurred in prepare().
    Aborting...