error: unexpected `cfg` condition value: `cargo-clippy`
 --> system-configuration-sys/src/network_reachability.rs:7:13
  |
7 | #![cfg_attr(feature = "cargo-clippy", allow(clippy::unreadable_literal))]
  |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
  |
  = note: no expected values for `feature`
  = help: consider adding `cargo-clippy` as a feature in `Cargo.toml`
  = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
  = note: `-D unexpected-cfgs` implied by `-D warnings`
  = help: to override `-D warnings` add `#[allow(unexpected_cfgs)]`

error: `feature = "cargo-clippy"` was replaced by `clippy`
 --> system-configuration-sys/src/network_reachability.rs:7:13
  |
7 | #![cfg_attr(feature = "cargo-clippy", allow(clippy::unreadable_literal))]
  |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `clippy`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#deprecated_clippy_cfg_attr
  = note: `-D clippy::deprecated-clippy-cfg-attr` implied by `-D warnings`
  = help: to override `-D warnings` add `#[allow(clippy::deprecated_clippy_cfg_attr)]`