message: Use 2021 edition in redox-exec
diff: name = "redox-exec"
  authors = ["4lDO2 <4lDO2@protonmail.com>"]
  version = "0.1.0"
  -edition = "2018"
  +edition = "2021"
  license = "MIT"
  # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
  